From 7efadc3cbd46369e960f31c33a2c555f718ca8c5 Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Thu, 1 Oct 2020 21:34:45 +0300
Subject: [PATCH 01/17] No auth check in OStatusController, even on
 non-federating instances.

---
 lib/pleroma/web/ostatus/ostatus_controller.ex | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/lib/pleroma/web/ostatus/ostatus_controller.ex b/lib/pleroma/web/ostatus/ostatus_controller.ex
index de1b0b3f0..8646d2c1c 100644
--- a/lib/pleroma/web/ostatus/ostatus_controller.ex
+++ b/lib/pleroma/web/ostatus/ostatus_controller.ex
@@ -16,10 +16,6 @@ defmodule Pleroma.Web.OStatus.OStatusController do
   alias Pleroma.Web.Metadata.PlayerView
   alias Pleroma.Web.Router
 
-  plug(Pleroma.Plugs.EnsureAuthenticatedPlug,
-    unless_func: &Pleroma.Web.FederatingPlug.federating?/1
-  )
-
   plug(
     RateLimiter,
     [name: :ap_routes, params: ["uuid"]] when action in [:object, :activity]

From 0d575735bfd280b878bdecc6d018d8cca23ad09f Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Thu, 1 Oct 2020 21:41:22 +0300
Subject: [PATCH 02/17] No auth check in UserController.feed_redirect/2, even
 on non-federating instances.

---
 lib/pleroma/web/feed/user_controller.ex | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/lib/pleroma/web/feed/user_controller.ex b/lib/pleroma/web/feed/user_controller.ex
index 71eb1ea7e..09ecdedb4 100644
--- a/lib/pleroma/web/feed/user_controller.ex
+++ b/lib/pleroma/web/feed/user_controller.ex
@@ -23,12 +23,7 @@ defmodule Pleroma.Web.Feed.UserController do
 
   def feed_redirect(%{assigns: %{format: format}} = conn, _params)
       when format in ["json", "activity+json"] do
-    with %{halted: false} = conn <-
-           Pleroma.Plugs.EnsureAuthenticatedPlug.call(conn,
-             unless_func: &Pleroma.Web.FederatingPlug.federating?/1
-           ) do
-      ActivityPubController.call(conn, :user)
-    end
+    ActivityPubController.call(conn, :user)
   end
 
   def feed_redirect(conn, %{"nickname" => nickname}) do

From f6024252ae8601d41bea943bb3cae5c656416eb9 Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Fri, 2 Oct 2020 22:18:02 +0300
Subject: [PATCH 03/17] [#3053] No auth check in StaticFEController, even on
 non-federating instances. Adjusted tests.

---
 lib/pleroma/web/feed/tag_controller.ex        |   4 +-
 lib/pleroma/web/feed/user_controller.ex       |   4 +-
 lib/pleroma/web/router.ex                     |  11 +-
 .../web/static_fe/static_fe_controller.ex     | 176 +++++++++---------
 test/support/conn_case.ex                     |  22 ---
 .../activity_pub_controller_test.exs          |  19 ++
 test/web/feed/user_controller_test.exs        |  12 +-
 test/web/ostatus/ostatus_controller_test.exs  |  24 +--
 .../static_fe/static_fe_controller_test.exs   |  24 ++-
 9 files changed, 162 insertions(+), 134 deletions(-)

diff --git a/lib/pleroma/web/feed/tag_controller.ex b/lib/pleroma/web/feed/tag_controller.ex
index 93a8294b7..c348b32c2 100644
--- a/lib/pleroma/web/feed/tag_controller.ex
+++ b/lib/pleroma/web/feed/tag_controller.ex
@@ -10,14 +10,14 @@ defmodule Pleroma.Web.Feed.TagController do
   alias Pleroma.Web.Feed.FeedView
 
   def feed(conn, params) do
-    unless Pleroma.Config.restrict_unauthenticated_access?(:activities, :local) do
+    unless Config.restrict_unauthenticated_access?(:activities, :local) do
       render_feed(conn, params)
     else
       render_error(conn, :not_found, "Not found")
     end
   end
 
-  def render_feed(conn, %{"tag" => raw_tag} = params) do
+  defp render_feed(conn, %{"tag" => raw_tag} = params) do
     {format, tag} = parse_tag(raw_tag)
 
     activities =
diff --git a/lib/pleroma/web/feed/user_controller.ex b/lib/pleroma/web/feed/user_controller.ex
index 09ecdedb4..5fbcd82d7 100644
--- a/lib/pleroma/web/feed/user_controller.ex
+++ b/lib/pleroma/web/feed/user_controller.ex
@@ -40,11 +40,11 @@ defmodule Pleroma.Web.Feed.UserController do
     end
   end
 
-  def render_feed(conn, %{"nickname" => nickname} = params) do
+  defp render_feed(conn, %{"nickname" => nickname} = params) do
     format = get_format(conn)
 
     format =
-      if format in ["rss", "atom"] do
+      if format in ["atom", "rss"] do
         format
       else
         "atom"
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index 42a9db21d..e0e92549f 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -561,12 +561,17 @@ defmodule Pleroma.Web.Router do
     plug(Pleroma.Plugs.StaticFEPlug)
   end
 
+  pipeline :ostatus_no_html do
+    plug(:accepts, ["xml", "rss", "atom", "activity+json", "json"])
+  end
+
   pipeline :oembed do
     plug(:accepts, ["json", "xml"])
   end
 
   scope "/", Pleroma.Web do
-    pipe_through([:ostatus, :http_signature])
+    # Note: no authentication plugs, all endpoints below should only yield public objects
+    pipe_through(:ostatus)
 
     get("/objects/:uuid", OStatus.OStatusController, :object)
     get("/activities/:uuid", OStatus.OStatusController, :activity)
@@ -579,6 +584,10 @@ defmodule Pleroma.Web.Router do
 
     get("/users/:nickname/feed", Feed.UserController, :feed, as: :user_feed)
     get("/users/:nickname", Feed.UserController, :feed_redirect, as: :user_feed)
+  end
+
+  scope "/", Pleroma.Web do
+    pipe_through(:ostatus_no_html)
 
     get("/tags/:tag", Feed.TagController, :feed, as: :tag_feed)
   end
diff --git a/lib/pleroma/web/static_fe/static_fe_controller.ex b/lib/pleroma/web/static_fe/static_fe_controller.ex
index a7a891b13..b1c62f5b0 100644
--- a/lib/pleroma/web/static_fe/static_fe_controller.ex
+++ b/lib/pleroma/web/static_fe/static_fe_controller.ex
@@ -17,12 +17,95 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do
   plug(:put_view, Pleroma.Web.StaticFE.StaticFEView)
   plug(:assign_id)
 
-  plug(Pleroma.Plugs.EnsureAuthenticatedPlug,
-    unless_func: &Pleroma.Web.FederatingPlug.federating?/1
-  )
-
   @page_keys ["max_id", "min_id", "limit", "since_id", "order"]
 
+  @doc "Renders requested local public activity"
+  def show(%{assigns: %{notice_id: notice_id}} = conn, _params) do
+    with %Activity{local: true} = activity <-
+           Activity.get_by_id_with_object(notice_id),
+         true <- Visibility.is_public?(activity.object),
+         %User{} = user <- User.get_by_ap_id(activity.object.data["actor"]) do
+      meta = Metadata.build_tags(%{activity_id: notice_id, object: activity.object, user: user})
+
+      timeline =
+        activity.object.data["context"]
+        |> ActivityPub.fetch_activities_for_context(%{})
+        |> Enum.reverse()
+        |> Enum.map(&represent(&1, &1.object.id == activity.object.id))
+
+      render(conn, "conversation.html", %{activities: timeline, meta: meta})
+    else
+      %Activity{object: %Object{data: data}} ->
+        conn
+        |> put_status(:found)
+        |> redirect(external: data["url"] || data["external_url"] || data["id"])
+
+      _ ->
+        not_found(conn, "Post not found.")
+    end
+  end
+
+  @doc "Renders public activities of requested user"
+  def show(%{assigns: %{username_or_id: username_or_id}} = conn, params) do
+    case User.get_cached_by_nickname_or_id(username_or_id) do
+      %User{} = user ->
+        meta = Metadata.build_tags(%{user: user})
+
+        params =
+          params
+          |> Map.take(@page_keys)
+          |> Map.new(fn {k, v} -> {String.to_existing_atom(k), v} end)
+
+        timeline =
+          user
+          |> ActivityPub.fetch_user_activities(_reading_user = nil, params)
+          |> Enum.map(&represent/1)
+
+        prev_page_id =
+          (params["min_id"] || params["max_id"]) &&
+            List.first(timeline) && List.first(timeline).id
+
+        next_page_id = List.last(timeline) && List.last(timeline).id
+
+        render(conn, "profile.html", %{
+          user: User.sanitize_html(user),
+          timeline: timeline,
+          prev_page_id: prev_page_id,
+          next_page_id: next_page_id,
+          meta: meta
+        })
+
+      _ ->
+        not_found(conn, "User not found.")
+    end
+  end
+
+  def show(%{assigns: %{object_id: _}} = conn, _params) do
+    url = Helpers.url(conn) <> conn.request_path
+
+    case Activity.get_create_by_object_ap_id_with_object(url) do
+      %Activity{} = activity ->
+        to = Helpers.o_status_path(Pleroma.Web.Endpoint, :notice, activity)
+        redirect(conn, to: to)
+
+      _ ->
+        not_found(conn, "Post not found.")
+    end
+  end
+
+  def show(%{assigns: %{activity_id: _}} = conn, _params) do
+    url = Helpers.url(conn) <> conn.request_path
+
+    case Activity.get_by_ap_id(url) do
+      %Activity{} = activity ->
+        to = Helpers.o_status_path(Pleroma.Web.Endpoint, :notice, activity)
+        redirect(conn, to: to)
+
+      _ ->
+        not_found(conn, "Post not found.")
+    end
+  end
+
   defp get_title(%Object{data: %{"name" => name}}) when is_binary(name),
     do: name
 
@@ -81,91 +164,6 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do
     }
   end
 
-  def show(%{assigns: %{notice_id: notice_id}} = conn, _params) do
-    with %Activity{local: true} = activity <-
-           Activity.get_by_id_with_object(notice_id),
-         true <- Visibility.is_public?(activity.object),
-         %User{} = user <- User.get_by_ap_id(activity.object.data["actor"]) do
-      meta = Metadata.build_tags(%{activity_id: notice_id, object: activity.object, user: user})
-
-      timeline =
-        activity.object.data["context"]
-        |> ActivityPub.fetch_activities_for_context(%{})
-        |> Enum.reverse()
-        |> Enum.map(&represent(&1, &1.object.id == activity.object.id))
-
-      render(conn, "conversation.html", %{activities: timeline, meta: meta})
-    else
-      %Activity{object: %Object{data: data}} ->
-        conn
-        |> put_status(:found)
-        |> redirect(external: data["url"] || data["external_url"] || data["id"])
-
-      _ ->
-        not_found(conn, "Post not found.")
-    end
-  end
-
-  def show(%{assigns: %{username_or_id: username_or_id}} = conn, params) do
-    case User.get_cached_by_nickname_or_id(username_or_id) do
-      %User{} = user ->
-        meta = Metadata.build_tags(%{user: user})
-
-        params =
-          params
-          |> Map.take(@page_keys)
-          |> Map.new(fn {k, v} -> {String.to_existing_atom(k), v} end)
-
-        timeline =
-          user
-          |> ActivityPub.fetch_user_activities(nil, params)
-          |> Enum.map(&represent/1)
-
-        prev_page_id =
-          (params["min_id"] || params["max_id"]) &&
-            List.first(timeline) && List.first(timeline).id
-
-        next_page_id = List.last(timeline) && List.last(timeline).id
-
-        render(conn, "profile.html", %{
-          user: User.sanitize_html(user),
-          timeline: timeline,
-          prev_page_id: prev_page_id,
-          next_page_id: next_page_id,
-          meta: meta
-        })
-
-      _ ->
-        not_found(conn, "User not found.")
-    end
-  end
-
-  def show(%{assigns: %{object_id: _}} = conn, _params) do
-    url = Helpers.url(conn) <> conn.request_path
-
-    case Activity.get_create_by_object_ap_id_with_object(url) do
-      %Activity{} = activity ->
-        to = Helpers.o_status_path(Pleroma.Web.Endpoint, :notice, activity)
-        redirect(conn, to: to)
-
-      _ ->
-        not_found(conn, "Post not found.")
-    end
-  end
-
-  def show(%{assigns: %{activity_id: _}} = conn, _params) do
-    url = Helpers.url(conn) <> conn.request_path
-
-    case Activity.get_by_ap_id(url) do
-      %Activity{} = activity ->
-        to = Helpers.o_status_path(Pleroma.Web.Endpoint, :notice, activity)
-        redirect(conn, to: to)
-
-      _ ->
-        not_found(conn, "Post not found.")
-    end
-  end
-
   defp assign_id(%{path_info: ["notice", notice_id]} = conn, _opts),
     do: assign(conn, :notice_id, notice_id)
 
diff --git a/test/support/conn_case.ex b/test/support/conn_case.ex
index 7ef681258..7b28d70e7 100644
--- a/test/support/conn_case.ex
+++ b/test/support/conn_case.ex
@@ -111,28 +111,6 @@ defmodule Pleroma.Web.ConnCase do
       defp json_response_and_validate_schema(conn, _status) do
         flunk("Response schema not found for #{conn.method} #{conn.request_path} #{conn.status}")
       end
-
-      defp ensure_federating_or_authenticated(conn, url, user) do
-        initial_setting = Config.get([:instance, :federating])
-        on_exit(fn -> Config.put([:instance, :federating], initial_setting) end)
-
-        Config.put([:instance, :federating], false)
-
-        conn
-        |> get(url)
-        |> response(403)
-
-        conn
-        |> assign(:user, user)
-        |> get(url)
-        |> response(200)
-
-        Config.put([:instance, :federating], true)
-
-        conn
-        |> get(url)
-        |> response(200)
-      end
     end
   end
 
diff --git a/test/web/activity_pub/activity_pub_controller_test.exs b/test/web/activity_pub/activity_pub_controller_test.exs
index 0517571f2..ab57b6523 100644
--- a/test/web/activity_pub/activity_pub_controller_test.exs
+++ b/test/web/activity_pub/activity_pub_controller_test.exs
@@ -33,6 +33,25 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
 
   setup do: clear_config([:instance, :federating], true)
 
+  defp ensure_federating_or_authenticated(conn, url, user) do
+    Config.put([:instance, :federating], false)
+
+    conn
+    |> get(url)
+    |> response(403)
+
+    conn
+    |> assign(:user, user)
+    |> get(url)
+    |> response(200)
+
+    Config.put([:instance, :federating], true)
+
+    conn
+    |> get(url)
+    |> response(200)
+  end
+
   describe "/relay" do
     setup do: clear_config([:instance, :allow_relay])
 
diff --git a/test/web/feed/user_controller_test.exs b/test/web/feed/user_controller_test.exs
index 9a5610baa..7383e82cc 100644
--- a/test/web/feed/user_controller_test.exs
+++ b/test/web/feed/user_controller_test.exs
@@ -13,7 +13,7 @@ defmodule Pleroma.Web.Feed.UserControllerTest do
   alias Pleroma.User
   alias Pleroma.Web.CommonAPI
 
-  setup do: clear_config([:instance, :federating], true)
+  setup do: clear_config([:static_fe, :enabled], false)
 
   describe "feed" do
     setup do: clear_config([:feed])
@@ -192,6 +192,16 @@ defmodule Pleroma.Web.Feed.UserControllerTest do
              |> get(user_feed_path(conn, :feed, user.nickname))
              |> response(404)
     end
+
+    test "does not require authentication on non-federating instances", %{conn: conn} do
+      clear_config([:instance, :federating], false)
+      user = insert(:user)
+
+      conn
+      |> put_req_header("accept", "application/rss+xml")
+      |> get("/users/#{user.nickname}/feed.rss")
+      |> response(200)
+    end
   end
 
   # Note: see ActivityPubControllerTest for JSON format tests
diff --git a/test/web/ostatus/ostatus_controller_test.exs b/test/web/ostatus/ostatus_controller_test.exs
index ee498f4b5..65b2c22db 100644
--- a/test/web/ostatus/ostatus_controller_test.exs
+++ b/test/web/ostatus/ostatus_controller_test.exs
@@ -7,7 +7,6 @@ defmodule Pleroma.Web.OStatus.OStatusControllerTest do
 
   import Pleroma.Factory
 
-  alias Pleroma.Config
   alias Pleroma.Object
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
@@ -21,7 +20,7 @@ defmodule Pleroma.Web.OStatus.OStatusControllerTest do
     :ok
   end
 
-  setup do: clear_config([:instance, :federating], true)
+  setup do: clear_config([:static_fe, :enabled], false)
 
   describe "Mastodon compatibility routes" do
     setup %{conn: conn} do
@@ -215,15 +214,16 @@ defmodule Pleroma.Web.OStatus.OStatusControllerTest do
       assert response(conn, 404)
     end
 
-    test "it requires authentication if instance is NOT federating", %{
+    test "does not require authentication on non-federating instances", %{
       conn: conn
     } do
-      user = insert(:user)
+      clear_config([:instance, :federating], false)
       note_activity = insert(:note_activity)
 
-      conn = put_req_header(conn, "accept", "text/html")
-
-      ensure_federating_or_authenticated(conn, "/notice/#{note_activity.id}", user)
+      conn
+      |> put_req_header("accept", "text/html")
+      |> get("/notice/#{note_activity.id}")
+      |> response(200)
     end
   end
 
@@ -325,14 +325,16 @@ defmodule Pleroma.Web.OStatus.OStatusControllerTest do
       |> response(404)
     end
 
-    test "it requires authentication if instance is NOT federating", %{
+    test "does not require authentication on non-federating instances", %{
       conn: conn,
       note_activity: note_activity
     } do
-      user = insert(:user)
-      conn = put_req_header(conn, "accept", "text/html")
+      clear_config([:instance, :federating], false)
 
-      ensure_federating_or_authenticated(conn, "/notice/#{note_activity.id}/embed_player", user)
+      conn
+      |> put_req_header("accept", "text/html")
+      |> get("/notice/#{note_activity.id}/embed_player")
+      |> response(200)
     end
   end
 end
diff --git a/test/web/static_fe/static_fe_controller_test.exs b/test/web/static_fe/static_fe_controller_test.exs
index 1598bf675..bab0b0a7b 100644
--- a/test/web/static_fe/static_fe_controller_test.exs
+++ b/test/web/static_fe/static_fe_controller_test.exs
@@ -2,14 +2,12 @@ defmodule Pleroma.Web.StaticFE.StaticFEControllerTest do
   use Pleroma.Web.ConnCase
 
   alias Pleroma.Activity
-  alias Pleroma.Config
   alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.CommonAPI
 
   import Pleroma.Factory
 
   setup_all do: clear_config([:static_fe, :enabled], true)
-  setup do: clear_config([:instance, :federating], true)
 
   setup %{conn: conn} do
     conn = put_req_header(conn, "accept", "text/html")
@@ -70,8 +68,15 @@ defmodule Pleroma.Web.StaticFE.StaticFEControllerTest do
       refute html =~ ">test29<"
     end
 
-    test "it requires authentication if instance is NOT federating", %{conn: conn, user: user} do
-      ensure_federating_or_authenticated(conn, "/users/#{user.nickname}", user)
+    test "does not require authentication on non-federating instances", %{
+      conn: conn,
+      user: user
+    } do
+      clear_config([:instance, :federating], false)
+
+      conn = get(conn, "/users/#{user.nickname}")
+
+      assert html_response(conn, 200) =~ user.nickname
     end
   end
 
@@ -183,10 +188,17 @@ defmodule Pleroma.Web.StaticFE.StaticFEControllerTest do
       assert html_response(conn, 302) =~ "redirected"
     end
 
-    test "it requires authentication if instance is NOT federating", %{conn: conn, user: user} do
+    test "does not require authentication on non-federating instances", %{
+      conn: conn,
+      user: user
+    } do
+      clear_config([:instance, :federating], false)
+
       {:ok, activity} = CommonAPI.post(user, %{status: "testing a thing!"})
 
-      ensure_federating_or_authenticated(conn, "/notice/#{activity.id}", user)
+      conn = get(conn, "/notice/#{activity.id}")
+
+      assert html_response(conn, 200) =~ "testing a thing!"
     end
   end
 end

From 094edde7c4ddf65f46e5d692a5ef5b859587d1e1 Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Mon, 5 Oct 2020 23:48:00 +0300
Subject: [PATCH 04/17] [#3053] Unauthenticated access control for
 OStatus-related controllers and ActivityPubController (base actions: :user,
 :object, :activity). Tests adjustments.

---
 .../activity_pub/activity_pub_controller.ex   | 56 +++++++++-------
 lib/pleroma/web/activity_pub/visibility.ex    | 39 ++++++++---
 lib/pleroma/web/feed/tag_controller.ex        | 15 +++--
 lib/pleroma/web/feed/user_controller.ex       | 19 +++---
 lib/pleroma/web/ostatus/ostatus_controller.ex | 26 +++----
 lib/pleroma/web/router.ex                     | 52 ++++++++++----
 .../web/static_fe/static_fe_controller.ex     | 48 ++++++-------
 .../activity_pub_controller_test.exs          | 67 -------------------
 test/web/feed/tag_controller_test.exs         | 13 ++--
 9 files changed, 159 insertions(+), 176 deletions(-)

diff --git a/lib/pleroma/web/activity_pub/activity_pub_controller.ex b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
index 732c44271..c78edfb4c 100644
--- a/lib/pleroma/web/activity_pub/activity_pub_controller.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
@@ -32,17 +32,23 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
 
   @federating_only_actions [:internal_fetch, :relay, :relay_following, :relay_followers]
 
+  # Note: :following and :followers must be served even without authentication (as via :api)
+  @auth_only_actions [:read_inbox, :update_outbox, :whoami, :upload_media]
+
+  # Always accessible actions (must perform entity accessibility checks)
+  @no_auth_no_federation_actions [:user, :activity, :object]
+
+  @authenticated_or_federating_actions @federating_only_actions ++
+                                         @auth_only_actions ++ @no_auth_no_federation_actions
+
   plug(FederatingPlug when action in @federating_only_actions)
 
+  plug(EnsureAuthenticatedPlug when action in @auth_only_actions)
+
   plug(
     EnsureAuthenticatedPlug,
-    [unless_func: &FederatingPlug.federating?/1] when action not in @federating_only_actions
-  )
-
-  # Note: :following and :followers must be served even without authentication (as via :api)
-  plug(
-    EnsureAuthenticatedPlug
-    when action in [:read_inbox, :update_outbox, :whoami, :upload_media]
+    [unless_func: &FederatingPlug.federating?/1]
+    when action not in @authenticated_or_federating_actions
   )
 
   plug(
@@ -66,21 +72,22 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
 
   def user(conn, %{"nickname" => nickname}) do
     with %User{local: true} = user <- User.get_cached_by_nickname(nickname),
+         {_, :visible} <- {:visibility, User.visible_for(user, _reading_user = nil)},
          {:ok, user} <- User.ensure_keys_present(user) do
       conn
       |> put_resp_content_type("application/activity+json")
       |> put_view(UserView)
       |> render("user.json", %{user: user})
     else
-      nil -> {:error, :not_found}
-      %{local: false} -> {:error, :not_found}
+      _ -> {:error, :not_found}
     end
   end
 
   def object(conn, _) do
     with ap_id <- Endpoint.url() <> conn.request_path,
          %Object{} = object <- Object.get_cached_by_ap_id(ap_id),
-         {_, true} <- {:public?, Visibility.is_public?(object)} do
+         {_, true} <- {:public?, Visibility.is_public?(object)},
+         {_, false} <- {:restricted?, Visibility.restrict_unauthenticated_access?(object)} do
       conn
       |> assign(:tracking_fun_data, object.id)
       |> set_cache_ttl_for(object)
@@ -88,25 +95,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
       |> put_view(ObjectView)
       |> render("object.json", object: object)
     else
-      {:public?, false} ->
-        {:error, :not_found}
+      _ -> {:error, :not_found}
     end
   end
 
-  def track_object_fetch(conn, nil), do: conn
-
-  def track_object_fetch(conn, object_id) do
-    with %{assigns: %{user: %User{id: user_id}}} <- conn do
-      Delivery.create(object_id, user_id)
-    end
-
-    conn
-  end
-
   def activity(conn, _params) do
     with ap_id <- Endpoint.url() <> conn.request_path,
          %Activity{} = activity <- Activity.normalize(ap_id),
-         {_, true} <- {:public?, Visibility.is_public?(activity)} do
+         {_, true} <- {:public?, Visibility.is_public?(activity)},
+         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
       conn
       |> maybe_set_tracking_data(activity)
       |> set_cache_ttl_for(activity)
@@ -114,8 +111,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
       |> put_view(ObjectView)
       |> render("object.json", object: activity)
     else
-      {:public?, false} -> {:error, :not_found}
-      nil -> {:error, :not_found}
+      _ -> {:error, :not_found}
     end
   end
 
@@ -550,4 +546,14 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
       |> json(object.data)
     end
   end
+
+  def track_object_fetch(conn, nil), do: conn
+
+  def track_object_fetch(conn, object_id) do
+    with %{assigns: %{user: %User{id: user_id}}} <- conn do
+      Delivery.create(object_id, user_id)
+    end
+
+    conn
+  end
 end
diff --git a/lib/pleroma/web/activity_pub/visibility.ex b/lib/pleroma/web/activity_pub/visibility.ex
index 5c349bb7a..76bd54a42 100644
--- a/lib/pleroma/web/activity_pub/visibility.ex
+++ b/lib/pleroma/web/activity_pub/visibility.ex
@@ -44,29 +44,30 @@ defmodule Pleroma.Web.ActivityPub.Visibility do
   def is_list?(%{data: %{"listMessage" => _}}), do: true
   def is_list?(_), do: false
 
-  @spec visible_for_user?(Activity.t(), User.t() | nil) :: boolean()
-  def visible_for_user?(%{actor: ap_id}, %User{ap_id: ap_id}), do: true
+  @spec visible_for_user?(Activity.t() | nil, User.t() | nil) :: boolean()
+  def visible_for_user?(%Activity{actor: ap_id}, %User{ap_id: ap_id}), do: true
 
   def visible_for_user?(nil, _), do: false
 
-  def visible_for_user?(%{data: %{"listMessage" => _}}, nil), do: false
+  def visible_for_user?(%Activity{data: %{"listMessage" => _}}, nil), do: false
 
-  def visible_for_user?(%{data: %{"listMessage" => list_ap_id}} = activity, %User{} = user) do
+  def visible_for_user?(
+        %Activity{data: %{"listMessage" => list_ap_id}} = activity,
+        %User{} = user
+      ) do
     user.ap_id in activity.data["to"] ||
       list_ap_id
       |> Pleroma.List.get_by_ap_id()
       |> Pleroma.List.member?(user)
   end
 
-  def visible_for_user?(%{local: local} = activity, nil) do
-    cfg_key = if local, do: :local, else: :remote
-
-    if Pleroma.Config.restrict_unauthenticated_access?(:activities, cfg_key),
+  def visible_for_user?(%Activity{} = activity, nil) do
+    if restrict_unauthenticated_access?(activity),
       do: false,
       else: is_public?(activity)
   end
 
-  def visible_for_user?(activity, user) do
+  def visible_for_user?(%Activity{} = activity, user) do
     x = [user.ap_id | User.following(user)]
     y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
     is_public?(activity) || Enum.any?(x, &(&1 in y))
@@ -82,6 +83,26 @@ defmodule Pleroma.Web.ActivityPub.Visibility do
     result
   end
 
+  def restrict_unauthenticated_access?(%Activity{local: local}) do
+    restrict_unauthenticated_access_to_activity?(local)
+  end
+
+  def restrict_unauthenticated_access?(%Object{} = object) do
+    object
+    |> Object.local?()
+    |> restrict_unauthenticated_access_to_activity?()
+  end
+
+  def restrict_unauthenticated_access?(%User{} = user) do
+    User.visible_for(user, _reading_user = nil)
+  end
+
+  defp restrict_unauthenticated_access_to_activity?(local?) when is_boolean(local?) do
+    cfg_key = if local?, do: :local, else: :remote
+
+    Pleroma.Config.restrict_unauthenticated_access?(:activities, cfg_key)
+  end
+
   def get_visibility(object) do
     to = object.data["to"] || []
     cc = object.data["cc"] || []
diff --git a/lib/pleroma/web/feed/tag_controller.ex b/lib/pleroma/web/feed/tag_controller.ex
index c348b32c2..218cdbdf3 100644
--- a/lib/pleroma/web/feed/tag_controller.ex
+++ b/lib/pleroma/web/feed/tag_controller.ex
@@ -10,7 +10,7 @@ defmodule Pleroma.Web.Feed.TagController do
   alias Pleroma.Web.Feed.FeedView
 
   def feed(conn, params) do
-    unless Config.restrict_unauthenticated_access?(:activities, :local) do
+    if Config.get!([:instance, :public]) do
       render_feed(conn, params)
     else
       render_error(conn, :not_found, "Not found")
@@ -36,12 +36,13 @@ defmodule Pleroma.Web.Feed.TagController do
   end
 
   @spec parse_tag(binary() | any()) :: {format :: String.t(), tag :: String.t()}
-  defp parse_tag(raw_tag) when is_binary(raw_tag) do
-    case Enum.reverse(String.split(raw_tag, ".")) do
-      [format | tag] when format in ["atom", "rss"] -> {format, Enum.join(tag, ".")}
-      _ -> {"rss", raw_tag}
+  defp parse_tag(raw_tag) do
+    case is_binary(raw_tag) && Enum.reverse(String.split(raw_tag, ".")) do
+      [format | tag] when format in ["rss", "atom"] ->
+        {format, Enum.join(tag, ".")}
+
+      _ ->
+        {"atom", raw_tag}
     end
   end
-
-  defp parse_tag(raw_tag), do: {"rss", raw_tag}
 end
diff --git a/lib/pleroma/web/feed/user_controller.ex b/lib/pleroma/web/feed/user_controller.ex
index 5fbcd82d7..f1d2bb7be 100644
--- a/lib/pleroma/web/feed/user_controller.ex
+++ b/lib/pleroma/web/feed/user_controller.ex
@@ -6,6 +6,8 @@ defmodule Pleroma.Web.Feed.UserController do
   use Pleroma.Web, :controller
 
   alias Fallback.RedirectController
+
+  alias Pleroma.Config
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.ActivityPubController
@@ -32,15 +34,7 @@ defmodule Pleroma.Web.Feed.UserController do
     end
   end
 
-  def feed(conn, params) do
-    unless Pleroma.Config.restrict_unauthenticated_access?(:profiles, :local) do
-      render_feed(conn, params)
-    else
-      errors(conn, {:error, :not_found})
-    end
-  end
-
-  defp render_feed(conn, %{"nickname" => nickname} = params) do
+  def feed(conn, %{"nickname" => nickname} = params) do
     format = get_format(conn)
 
     format =
@@ -50,7 +44,8 @@ defmodule Pleroma.Web.Feed.UserController do
         "atom"
       end
 
-    with {_, %User{local: true} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)} do
+    with {_, %User{local: true} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)},
+         {_, :visible} <- {:visibility, User.visible_for(user, _reading_user = nil)} do
       activities =
         %{
           type: ["Create"],
@@ -65,7 +60,7 @@ defmodule Pleroma.Web.Feed.UserController do
       |> render("user.#{format}",
         user: user,
         activities: activities,
-        feed_config: Pleroma.Config.get([:feed])
+        feed_config: Config.get([:feed])
       )
     end
   end
@@ -77,6 +72,8 @@ defmodule Pleroma.Web.Feed.UserController do
   def errors(conn, {:fetch_user, %User{local: false}}), do: errors(conn, {:error, :not_found})
   def errors(conn, {:fetch_user, nil}), do: errors(conn, {:error, :not_found})
 
+  def errors(conn, {:visibility, _}), do: errors(conn, {:error, :not_found})
+
   def errors(conn, _) do
     render_error(conn, :internal_server_error, "Something went wrong")
   end
diff --git a/lib/pleroma/web/ostatus/ostatus_controller.ex b/lib/pleroma/web/ostatus/ostatus_controller.ex
index 8646d2c1c..b4dc2a87f 100644
--- a/lib/pleroma/web/ostatus/ostatus_controller.ex
+++ b/lib/pleroma/web/ostatus/ostatus_controller.ex
@@ -33,16 +33,15 @@ defmodule Pleroma.Web.OStatus.OStatusController do
     ActivityPubController.call(conn, :object)
   end
 
-  def object(%{assigns: %{format: format}} = conn, _params) do
+  def object(conn, _params) do
     with id <- Endpoint.url() <> conn.request_path,
          {_, %Activity{} = activity} <-
            {:activity, Activity.get_create_by_object_ap_id_with_object(id)},
-         {_, true} <- {:public?, Visibility.is_public?(activity)} do
-      case format do
-        _ -> redirect(conn, to: "/notice/#{activity.id}")
-      end
+         {_, true} <- {:public?, Visibility.is_public?(activity)},
+         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
+      redirect(conn, to: "/notice/#{activity.id}")
     else
-      reason when reason in [{:public?, false}, {:activity, nil}] ->
+      reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
         {:error, :not_found}
 
       e ->
@@ -55,15 +54,14 @@ defmodule Pleroma.Web.OStatus.OStatusController do
     ActivityPubController.call(conn, :activity)
   end
 
-  def activity(%{assigns: %{format: format}} = conn, _params) do
+  def activity(conn, _params) do
     with id <- Endpoint.url() <> conn.request_path,
          {_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
-         {_, true} <- {:public?, Visibility.is_public?(activity)} do
-      case format do
-        _ -> redirect(conn, to: "/notice/#{activity.id}")
-      end
+         {_, true} <- {:public?, Visibility.is_public?(activity)},
+         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
+      redirect(conn, to: "/notice/#{activity.id}")
     else
-      reason when reason in [{:public?, false}, {:activity, nil}] ->
+      reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
         {:error, :not_found}
 
       e ->
@@ -74,6 +72,7 @@ defmodule Pleroma.Web.OStatus.OStatusController do
   def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
     with {_, %Activity{} = activity} <- {:activity, Activity.get_by_id_with_object(id)},
          {_, true} <- {:public?, Visibility.is_public?(activity)},
+         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
          %User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
       cond do
         format in ["json", "activity+json"] ->
@@ -101,7 +100,7 @@ defmodule Pleroma.Web.OStatus.OStatusController do
           RedirectController.redirector(conn, nil)
       end
     else
-      reason when reason in [{:public?, false}, {:activity, nil}] ->
+      reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
         conn
         |> put_status(404)
         |> RedirectController.redirector(nil, 404)
@@ -115,6 +114,7 @@ defmodule Pleroma.Web.OStatus.OStatusController do
   def notice_player(conn, %{"id" => id}) do
     with %Activity{data: %{"type" => "Create"}} = activity <- Activity.get_by_id_with_object(id),
          true <- Visibility.is_public?(activity),
+         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
          %Object{} = object <- Object.normalize(activity),
          %{data: %{"attachment" => [%{"url" => [url | _]} | _]}} <- object,
          true <- String.starts_with?(url["mediaType"], ["audio", "video"]) do
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index e0e92549f..6439a1c39 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -5,6 +5,14 @@
 defmodule Pleroma.Web.Router do
   use Pleroma.Web, :router
 
+  pipeline :accepts_html do
+    plug(:accepts, ["html"])
+  end
+
+  pipeline :accepts_xml_rss_atom do
+    plug(:accepts, ["xml", "rss", "atom"])
+  end
+
   pipeline :browser do
     plug(:accepts, ["html"])
     plug(:fetch_session)
@@ -556,39 +564,55 @@ defmodule Pleroma.Web.Router do
     )
   end
 
-  pipeline :ostatus do
+  pipeline :ostatus_html_json do
+    plug(:accepts, ["html", "activity+json", "json"])
+    plug(Pleroma.Plugs.StaticFEPlug)
+  end
+
+  pipeline :ostatus_html_xml do
+    plug(:accepts, ["html", "xml", "rss", "atom"])
+    plug(Pleroma.Plugs.StaticFEPlug)
+  end
+
+  pipeline :ostatus_html_xml_json do
     plug(:accepts, ["html", "xml", "rss", "atom", "activity+json", "json"])
     plug(Pleroma.Plugs.StaticFEPlug)
   end
 
-  pipeline :ostatus_no_html do
-    plug(:accepts, ["xml", "rss", "atom", "activity+json", "json"])
-  end
-
-  pipeline :oembed do
-    plug(:accepts, ["json", "xml"])
-  end
-
   scope "/", Pleroma.Web do
-    # Note: no authentication plugs, all endpoints below should only yield public objects
-    pipe_through(:ostatus)
+    # Note: html format is supported only if static FE is enabled
+    pipe_through(:ostatus_html_json)
 
     get("/objects/:uuid", OStatus.OStatusController, :object)
     get("/activities/:uuid", OStatus.OStatusController, :activity)
     get("/notice/:id", OStatus.OStatusController, :notice)
-    get("/notice/:id/embed_player", OStatus.OStatusController, :notice_player)
 
     # Mastodon compatibility routes
     get("/users/:nickname/statuses/:id", OStatus.OStatusController, :object)
     get("/users/:nickname/statuses/:id/activity", OStatus.OStatusController, :activity)
+  end
 
-    get("/users/:nickname/feed", Feed.UserController, :feed, as: :user_feed)
+  scope "/", Pleroma.Web do
+    # Note: html format is supported only if static FE is enabled
+    pipe_through(:ostatus_html_xml_json)
+
+    # Note: for json format responds with user profile (not user feed)
     get("/users/:nickname", Feed.UserController, :feed_redirect, as: :user_feed)
   end
 
   scope "/", Pleroma.Web do
-    pipe_through(:ostatus_no_html)
+    # Note: html format is supported only if static FE is enabled
+    pipe_through(:ostatus_html_xml)
+    get("/users/:nickname/feed", Feed.UserController, :feed, as: :user_feed)
+  end
 
+  scope "/", Pleroma.Web do
+    pipe_through(:accepts_html)
+    get("/notice/:id/embed_player", OStatus.OStatusController, :notice_player)
+  end
+
+  scope "/", Pleroma.Web do
+    pipe_through(:accepts_xml_rss_atom)
     get("/tags/:tag", Feed.TagController, :feed, as: :tag_feed)
   end
 
diff --git a/lib/pleroma/web/static_fe/static_fe_controller.ex b/lib/pleroma/web/static_fe/static_fe_controller.ex
index b1c62f5b0..76b82589f 100644
--- a/lib/pleroma/web/static_fe/static_fe_controller.ex
+++ b/lib/pleroma/web/static_fe/static_fe_controller.ex
@@ -24,6 +24,7 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do
     with %Activity{local: true} = activity <-
            Activity.get_by_id_with_object(notice_id),
          true <- Visibility.is_public?(activity.object),
+         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
          %User{} = user <- User.get_by_ap_id(activity.object.data["actor"]) do
       meta = Metadata.build_tags(%{activity_id: notice_id, object: activity.object, user: user})
 
@@ -47,34 +48,35 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do
 
   @doc "Renders public activities of requested user"
   def show(%{assigns: %{username_or_id: username_or_id}} = conn, params) do
-    case User.get_cached_by_nickname_or_id(username_or_id) do
-      %User{} = user ->
-        meta = Metadata.build_tags(%{user: user})
+    with {_, %User{local: true} = user} <-
+           {:fetch_user, User.get_cached_by_nickname_or_id(username_or_id)},
+         {_, :visible} <- {:visibility, User.visible_for(user, _reading_user = nil)} do
+      meta = Metadata.build_tags(%{user: user})
 
-        params =
-          params
-          |> Map.take(@page_keys)
-          |> Map.new(fn {k, v} -> {String.to_existing_atom(k), v} end)
+      params =
+        params
+        |> Map.take(@page_keys)
+        |> Map.new(fn {k, v} -> {String.to_existing_atom(k), v} end)
 
-        timeline =
-          user
-          |> ActivityPub.fetch_user_activities(_reading_user = nil, params)
-          |> Enum.map(&represent/1)
+      timeline =
+        user
+        |> ActivityPub.fetch_user_activities(_reading_user = nil, params)
+        |> Enum.map(&represent/1)
 
-        prev_page_id =
-          (params["min_id"] || params["max_id"]) &&
-            List.first(timeline) && List.first(timeline).id
+      prev_page_id =
+        (params["min_id"] || params["max_id"]) &&
+          List.first(timeline) && List.first(timeline).id
 
-        next_page_id = List.last(timeline) && List.last(timeline).id
-
-        render(conn, "profile.html", %{
-          user: User.sanitize_html(user),
-          timeline: timeline,
-          prev_page_id: prev_page_id,
-          next_page_id: next_page_id,
-          meta: meta
-        })
+      next_page_id = List.last(timeline) && List.last(timeline).id
 
+      render(conn, "profile.html", %{
+        user: User.sanitize_html(user),
+        timeline: timeline,
+        prev_page_id: prev_page_id,
+        next_page_id: next_page_id,
+        meta: meta
+      })
+    else
       _ ->
         not_found(conn, "User not found.")
     end
diff --git a/test/web/activity_pub/activity_pub_controller_test.exs b/test/web/activity_pub/activity_pub_controller_test.exs
index ab57b6523..9ec13b21f 100644
--- a/test/web/activity_pub/activity_pub_controller_test.exs
+++ b/test/web/activity_pub/activity_pub_controller_test.exs
@@ -33,25 +33,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
 
   setup do: clear_config([:instance, :federating], true)
 
-  defp ensure_federating_or_authenticated(conn, url, user) do
-    Config.put([:instance, :federating], false)
-
-    conn
-    |> get(url)
-    |> response(403)
-
-    conn
-    |> assign(:user, user)
-    |> get(url)
-    |> response(200)
-
-    Config.put([:instance, :federating], true)
-
-    conn
-    |> get(url)
-    |> response(200)
-  end
-
   describe "/relay" do
     setup do: clear_config([:instance, :allow_relay])
 
@@ -175,21 +156,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
 
       assert response == "Not found"
     end
-
-    test "it requires authentication if instance is NOT federating", %{
-      conn: conn
-    } do
-      user = insert(:user)
-
-      conn =
-        put_req_header(
-          conn,
-          "accept",
-          "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\""
-        )
-
-      ensure_federating_or_authenticated(conn, "/users/#{user.nickname}.json", user)
-    end
   end
 
   describe "mastodon compatibility routes" do
@@ -357,18 +323,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
 
       assert "Not found" == json_response(conn2, :not_found)
     end
-
-    test "it requires authentication if instance is NOT federating", %{
-      conn: conn
-    } do
-      user = insert(:user)
-      note = insert(:note)
-      uuid = String.split(note.data["id"], "/") |> List.last()
-
-      conn = put_req_header(conn, "accept", "application/activity+json")
-
-      ensure_federating_or_authenticated(conn, "/objects/#{uuid}", user)
-    end
   end
 
   describe "/activities/:uuid" do
@@ -440,18 +394,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
 
       assert "Not found" == json_response(conn2, :not_found)
     end
-
-    test "it requires authentication if instance is NOT federating", %{
-      conn: conn
-    } do
-      user = insert(:user)
-      activity = insert(:note_activity)
-      uuid = String.split(activity.data["id"], "/") |> List.last()
-
-      conn = put_req_header(conn, "accept", "application/activity+json")
-
-      ensure_federating_or_authenticated(conn, "/activities/#{uuid}", user)
-    end
   end
 
   describe "/inbox" do
@@ -912,15 +854,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
 
       assert response(conn, 200) =~ announce_activity.data["object"]
     end
-
-    test "it requires authentication if instance is NOT federating", %{
-      conn: conn
-    } do
-      user = insert(:user)
-      conn = put_req_header(conn, "accept", "application/activity+json")
-
-      ensure_federating_or_authenticated(conn, "/users/#{user.nickname}/outbox", user)
-    end
   end
 
   describe "POST /users/:nickname/outbox (C2S)" do
diff --git a/test/web/feed/tag_controller_test.exs b/test/web/feed/tag_controller_test.exs
index 868e40965..e4084b0e5 100644
--- a/test/web/feed/tag_controller_test.exs
+++ b/test/web/feed/tag_controller_test.exs
@@ -8,6 +8,7 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
   import Pleroma.Factory
   import SweetXml
 
+  alias Pleroma.Config
   alias Pleroma.Object
   alias Pleroma.Web.CommonAPI
   alias Pleroma.Web.Feed.FeedView
@@ -15,7 +16,7 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
   setup do: clear_config([:feed])
 
   test "gets a feed (ATOM)", %{conn: conn} do
-    Pleroma.Config.put(
+    Config.put(
       [:feed, :post_title],
       %{max_length: 25, omission: "..."}
     )
@@ -82,7 +83,7 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
   end
 
   test "gets a feed (RSS)", %{conn: conn} do
-    Pleroma.Config.put(
+    Config.put(
       [:feed, :post_title],
       %{max_length: 25, omission: "..."}
     )
@@ -157,7 +158,7 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
     response =
       conn
       |> put_req_header("accept", "application/rss+xml")
-      |> get(tag_feed_path(conn, :feed, "pleromaart"))
+      |> get(tag_feed_path(conn, :feed, "pleromaart.rss"))
       |> response(200)
 
     xml = parse(response)
@@ -183,14 +184,12 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
   end
 
   describe "private instance" do
-    setup do: clear_config([:instance, :public])
+    setup do: clear_config([:instance, :public], false)
 
     test "returns 404 for tags feed", %{conn: conn} do
-      Config.put([:instance, :public], false)
-
       conn
       |> put_req_header("accept", "application/rss+xml")
-      |> get(tag_feed_path(conn, :feed, "pleromaart"))
+      |> get(tag_feed_path(conn, :feed, "pleromaart.rss"))
       |> response(404)
     end
   end

From e1eb54d3899883b5af6a43687a2345543d69ad4a Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Sun, 11 Oct 2020 13:37:19 +0300
Subject: [PATCH 05/17] [#3053] Rollback of access control changes in
 ActivityPubController (base actions: :user, :object, :activity).

---
 .../activity_pub/activity_pub_controller.ex   | 56 +++++++++----------
 1 file changed, 25 insertions(+), 31 deletions(-)

diff --git a/lib/pleroma/web/activity_pub/activity_pub_controller.ex b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
index c78edfb4c..732c44271 100644
--- a/lib/pleroma/web/activity_pub/activity_pub_controller.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
@@ -32,23 +32,17 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
 
   @federating_only_actions [:internal_fetch, :relay, :relay_following, :relay_followers]
 
-  # Note: :following and :followers must be served even without authentication (as via :api)
-  @auth_only_actions [:read_inbox, :update_outbox, :whoami, :upload_media]
-
-  # Always accessible actions (must perform entity accessibility checks)
-  @no_auth_no_federation_actions [:user, :activity, :object]
-
-  @authenticated_or_federating_actions @federating_only_actions ++
-                                         @auth_only_actions ++ @no_auth_no_federation_actions
-
   plug(FederatingPlug when action in @federating_only_actions)
 
-  plug(EnsureAuthenticatedPlug when action in @auth_only_actions)
-
   plug(
     EnsureAuthenticatedPlug,
-    [unless_func: &FederatingPlug.federating?/1]
-    when action not in @authenticated_or_federating_actions
+    [unless_func: &FederatingPlug.federating?/1] when action not in @federating_only_actions
+  )
+
+  # Note: :following and :followers must be served even without authentication (as via :api)
+  plug(
+    EnsureAuthenticatedPlug
+    when action in [:read_inbox, :update_outbox, :whoami, :upload_media]
   )
 
   plug(
@@ -72,22 +66,21 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
 
   def user(conn, %{"nickname" => nickname}) do
     with %User{local: true} = user <- User.get_cached_by_nickname(nickname),
-         {_, :visible} <- {:visibility, User.visible_for(user, _reading_user = nil)},
          {:ok, user} <- User.ensure_keys_present(user) do
       conn
       |> put_resp_content_type("application/activity+json")
       |> put_view(UserView)
       |> render("user.json", %{user: user})
     else
-      _ -> {:error, :not_found}
+      nil -> {:error, :not_found}
+      %{local: false} -> {:error, :not_found}
     end
   end
 
   def object(conn, _) do
     with ap_id <- Endpoint.url() <> conn.request_path,
          %Object{} = object <- Object.get_cached_by_ap_id(ap_id),
-         {_, true} <- {:public?, Visibility.is_public?(object)},
-         {_, false} <- {:restricted?, Visibility.restrict_unauthenticated_access?(object)} do
+         {_, true} <- {:public?, Visibility.is_public?(object)} do
       conn
       |> assign(:tracking_fun_data, object.id)
       |> set_cache_ttl_for(object)
@@ -95,15 +88,25 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
       |> put_view(ObjectView)
       |> render("object.json", object: object)
     else
-      _ -> {:error, :not_found}
+      {:public?, false} ->
+        {:error, :not_found}
     end
   end
 
+  def track_object_fetch(conn, nil), do: conn
+
+  def track_object_fetch(conn, object_id) do
+    with %{assigns: %{user: %User{id: user_id}}} <- conn do
+      Delivery.create(object_id, user_id)
+    end
+
+    conn
+  end
+
   def activity(conn, _params) do
     with ap_id <- Endpoint.url() <> conn.request_path,
          %Activity{} = activity <- Activity.normalize(ap_id),
-         {_, true} <- {:public?, Visibility.is_public?(activity)},
-         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
+         {_, true} <- {:public?, Visibility.is_public?(activity)} do
       conn
       |> maybe_set_tracking_data(activity)
       |> set_cache_ttl_for(activity)
@@ -111,7 +114,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
       |> put_view(ObjectView)
       |> render("object.json", object: activity)
     else
-      _ -> {:error, :not_found}
+      {:public?, false} -> {:error, :not_found}
+      nil -> {:error, :not_found}
     end
   end
 
@@ -546,14 +550,4 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
       |> json(object.data)
     end
   end
-
-  def track_object_fetch(conn, nil), do: conn
-
-  def track_object_fetch(conn, object_id) do
-    with %{assigns: %{user: %User{id: user_id}}} <- conn do
-      Delivery.create(object_id, user_id)
-    end
-
-    conn
-  end
 end

From 89c595b772eaaa8809f5339d708d7dc22e51b662 Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Sun, 11 Oct 2020 22:34:28 +0300
Subject: [PATCH 06/17] [#3053] Removed target accessibility checks for OStatus
 endpoints delegating to RedirectController. Added tests.

---
 CHANGELOG.md                                  |  1 +
 lib/pleroma/web/ostatus/ostatus_controller.ex | 13 +++----
 lib/pleroma/web/router.ex                     | 38 +++++++++----------
 .../static_fe/static_fe_controller_test.exs   | 23 +++++++++++
 4 files changed, 48 insertions(+), 27 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ae5d0eda..1e7bcca08 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,7 @@ switched to a new configuration mechanism, however it was not officially removed
 
 - Add documented-but-missing chat pagination.
 - Allow sending out emails again.
+- OStatus / static FE endpoints: fixed inaccessibility for anonymous users on non-federating instances, switched to handling per `:restrict_unauthenticated` setting.
 
 ## Unreleased (Patch)
 
diff --git a/lib/pleroma/web/ostatus/ostatus_controller.ex b/lib/pleroma/web/ostatus/ostatus_controller.ex
index b4dc2a87f..e03ca8c0a 100644
--- a/lib/pleroma/web/ostatus/ostatus_controller.ex
+++ b/lib/pleroma/web/ostatus/ostatus_controller.ex
@@ -37,11 +37,10 @@ defmodule Pleroma.Web.OStatus.OStatusController do
     with id <- Endpoint.url() <> conn.request_path,
          {_, %Activity{} = activity} <-
            {:activity, Activity.get_create_by_object_ap_id_with_object(id)},
-         {_, true} <- {:public?, Visibility.is_public?(activity)},
-         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
+         {_, true} <- {:public?, Visibility.is_public?(activity)} do
       redirect(conn, to: "/notice/#{activity.id}")
     else
-      reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
+      reason when reason in [{:public?, false}, {:activity, nil}] ->
         {:error, :not_found}
 
       e ->
@@ -57,11 +56,10 @@ defmodule Pleroma.Web.OStatus.OStatusController do
   def activity(conn, _params) do
     with id <- Endpoint.url() <> conn.request_path,
          {_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
-         {_, true} <- {:public?, Visibility.is_public?(activity)},
-         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
+         {_, true} <- {:public?, Visibility.is_public?(activity)} do
       redirect(conn, to: "/notice/#{activity.id}")
     else
-      reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
+      reason when reason in [{:public?, false}, {:activity, nil}] ->
         {:error, :not_found}
 
       e ->
@@ -72,7 +70,6 @@ defmodule Pleroma.Web.OStatus.OStatusController do
   def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
     with {_, %Activity{} = activity} <- {:activity, Activity.get_by_id_with_object(id)},
          {_, true} <- {:public?, Visibility.is_public?(activity)},
-         {_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
          %User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
       cond do
         format in ["json", "activity+json"] ->
@@ -100,7 +97,7 @@ defmodule Pleroma.Web.OStatus.OStatusController do
           RedirectController.redirector(conn, nil)
       end
     else
-      reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
+      reason when reason in [{:public?, false}, {:activity, nil}] ->
         conn
         |> put_status(404)
         |> RedirectController.redirector(nil, 404)
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index 97fcaafd5..ef56360ed 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -9,6 +9,18 @@ defmodule Pleroma.Web.Router do
     plug(:accepts, ["html"])
   end
 
+  pipeline :accepts_html_xml do
+    plug(:accepts, ["html", "xml", "rss", "atom"])
+  end
+
+  pipeline :accepts_html_json do
+    plug(:accepts, ["html", "activity+json", "json"])
+  end
+
+  pipeline :accepts_html_xml_json do
+    plug(:accepts, ["html", "xml", "rss", "atom", "activity+json", "json"])
+  end
+
   pipeline :accepts_xml_rss_atom do
     plug(:accepts, ["xml", "rss", "atom"])
   end
@@ -574,24 +586,10 @@ defmodule Pleroma.Web.Router do
     )
   end
 
-  pipeline :ostatus_html_json do
-    plug(:accepts, ["html", "activity+json", "json"])
-    plug(Pleroma.Plugs.StaticFEPlug)
-  end
-
-  pipeline :ostatus_html_xml do
-    plug(:accepts, ["html", "xml", "rss", "atom"])
-    plug(Pleroma.Plugs.StaticFEPlug)
-  end
-
-  pipeline :ostatus_html_xml_json do
-    plug(:accepts, ["html", "xml", "rss", "atom", "activity+json", "json"])
-    plug(Pleroma.Plugs.StaticFEPlug)
-  end
-
   scope "/", Pleroma.Web do
     # Note: html format is supported only if static FE is enabled
-    pipe_through(:ostatus_html_json)
+    # Note: http signature is only considered for json requests (no auth for non-json requests)
+    pipe_through([:accepts_html_json, :http_signature, Pleroma.Plugs.StaticFEPlug])
 
     get("/objects/:uuid", OStatus.OStatusController, :object)
     get("/activities/:uuid", OStatus.OStatusController, :activity)
@@ -604,15 +602,17 @@ defmodule Pleroma.Web.Router do
 
   scope "/", Pleroma.Web do
     # Note: html format is supported only if static FE is enabled
-    pipe_through(:ostatus_html_xml_json)
+    # Note: http signature is only considered for json requests (no auth for non-json requests)
+    pipe_through([:accepts_html_xml_json, :http_signature, Pleroma.Plugs.StaticFEPlug])
 
-    # Note: for json format responds with user profile (not user feed)
+    # Note: returns user _profile_ for json requests, redirects to user _feed_ for non-json ones
     get("/users/:nickname", Feed.UserController, :feed_redirect, as: :user_feed)
   end
 
   scope "/", Pleroma.Web do
     # Note: html format is supported only if static FE is enabled
-    pipe_through(:ostatus_html_xml)
+    pipe_through([:accepts_html_xml, Pleroma.Plugs.StaticFEPlug])
+
     get("/users/:nickname/feed", Feed.UserController, :feed, as: :user_feed)
   end
 
diff --git a/test/web/static_fe/static_fe_controller_test.exs b/test/web/static_fe/static_fe_controller_test.exs
index bab0b0a7b..8baf5b1ce 100644
--- a/test/web/static_fe/static_fe_controller_test.exs
+++ b/test/web/static_fe/static_fe_controller_test.exs
@@ -78,6 +78,18 @@ defmodule Pleroma.Web.StaticFE.StaticFEControllerTest do
 
       assert html_response(conn, 200) =~ user.nickname
     end
+
+    test "returns 404 for local user with `restrict_unauthenticated/profiles/local` setting", %{
+      conn: conn
+    } do
+      clear_config([:restrict_unauthenticated, :profiles, :local], true)
+
+      local_user = insert(:user, local: true)
+
+      conn
+      |> get("/users/#{local_user.nickname}")
+      |> html_response(404)
+    end
   end
 
   describe "notice html" do
@@ -200,5 +212,16 @@ defmodule Pleroma.Web.StaticFE.StaticFEControllerTest do
 
       assert html_response(conn, 200) =~ "testing a thing!"
     end
+
+    test "returns 404 for local public activity with `restrict_unauthenticated/activities/local` setting",
+         %{conn: conn, user: user} do
+      clear_config([:restrict_unauthenticated, :activities, :local], true)
+
+      {:ok, activity} = CommonAPI.post(user, %{status: "testing a thing!"})
+
+      conn
+      |> get("/notice/#{activity.id}")
+      |> html_response(404)
+    end
   end
 end

From 1b8fd7e65af980c42b72f584c2a957b12ca5c78b Mon Sep 17 00:00:00 2001
From: Mark Felder <feld@feld.me>
Date: Fri, 16 Oct 2020 17:32:05 +0000
Subject: [PATCH 07/17] Adds feature to permit e.g., local admins and community
 moderators to automatically follow all newly registered accounts

---
 config/config.exs                |  1 +
 config/description.exs           | 11 +++++++++++
 docs/configuration/cheatsheet.md |  1 +
 lib/pleroma/user.ex              | 11 +++++++++++
 test/pleroma/user_test.exs       | 18 ++++++++++++++++++
 5 files changed, 42 insertions(+)

diff --git a/config/config.exs b/config/config.exs
index 2c6142360..0f3785d12 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -235,6 +235,7 @@ config :pleroma, :instance,
     "text/bbcode"
   ],
   autofollowed_nicknames: [],
+  autofollowing_nicknames: [],
   max_pinned_statuses: 1,
   attachment_links: false,
   max_report_comment_size: 1000,
diff --git a/config/description.exs b/config/description.exs
index 2a1898922..2bbb12540 100644
--- a/config/description.exs
+++ b/config/description.exs
@@ -837,6 +837,17 @@ config :pleroma, :config_description, [
           "rinpatch"
         ]
       },
+      %{
+        key: :autofollowing_nicknames,
+        type: {:list, :string},
+        description:
+          "Set to nicknames of (local) users that automatically follows every newly registered user",
+        suggestions: [
+          "admin",
+          "info",
+          "moderator",
+        ]
+      },
       %{
         key: :attachment_links,
         type: :boolean,
diff --git a/docs/configuration/cheatsheet.md b/docs/configuration/cheatsheet.md
index 0b13d7e88..f4b4b6c3c 100644
--- a/docs/configuration/cheatsheet.md
+++ b/docs/configuration/cheatsheet.md
@@ -45,6 +45,7 @@ To add configuration to your config file, you can copy it from the base config.
     older software for theses nicknames.
 * `max_pinned_statuses`: The maximum number of pinned statuses. `0` will disable the feature.
 * `autofollowed_nicknames`: Set to nicknames of (local) users that every new user should automatically follow.
+* `autofollowing_nicknames`: Set to nicknames of (local) users that automatically follows every newly registered user.
 * `attachment_links`: Set to true to enable automatically adding attachment link text to statuses.
 * `max_report_comment_size`: The maximum size of the report comment (Default: `1000`).
 * `safe_dm_mentions`: If set to true, only mentions at the beginning of a post will be used to address people in direct messages. This is to prevent accidental mentioning of people when talking about them (e.g. "@friend hey i really don't like @enemy"). Default: `false`.
diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index dc41d0001..2a3495103 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -765,6 +765,16 @@ defmodule Pleroma.User do
     follow_all(user, autofollowed_users)
   end
 
+  defp autofollowing_users(user) do
+    candidates = Config.get([:instance, :autofollowing_nicknames])
+
+    User.Query.build(%{nickname: candidates, local: true, deactivated: false})
+    |> Repo.all()
+    |> Enum.each(&follow(&1, user, :follow_accept))
+
+    {:ok, :success}
+  end
+
   @doc "Inserts provided changeset, performs post-registration actions (confirmation email sending etc.)"
   def register(%Ecto.Changeset{} = changeset) do
     with {:ok, user} <- Repo.insert(changeset) do
@@ -774,6 +784,7 @@ defmodule Pleroma.User do
 
   def post_register_action(%User{} = user) do
     with {:ok, user} <- autofollow_users(user),
+         {:ok, _} <- autofollowing_users(user),
          {:ok, user} <- set_cache(user),
          {:ok, _} <- send_welcome_email(user),
          {:ok, _} <- send_welcome_message(user),
diff --git a/test/pleroma/user_test.exs b/test/pleroma/user_test.exs
index 7220ce846..9ae52d594 100644
--- a/test/pleroma/user_test.exs
+++ b/test/pleroma/user_test.exs
@@ -388,6 +388,7 @@ defmodule Pleroma.UserTest do
     }
 
     setup do: clear_config([:instance, :autofollowed_nicknames])
+    setup do: clear_config([:instance, :autofollowing_nicknames])
     setup do: clear_config([:welcome])
     setup do: clear_config([:instance, :account_activation_required])
 
@@ -408,6 +409,23 @@ defmodule Pleroma.UserTest do
       refute User.following?(registered_user, remote_user)
     end
 
+    test "it adds automatic followers for new registered accounts" do
+      user1 = insert(:user)
+      user2 = insert(:user)
+
+      Pleroma.Config.put([:instance, :autofollowing_nicknames], [
+        user1.nickname,
+        user2.nickname
+      ])
+
+      cng = User.register_changeset(%User{}, @full_user_data)
+
+      {:ok, registered_user} = User.register(cng)
+
+      assert User.following?(user1, registered_user)
+      assert User.following?(user2, registered_user)
+    end
+
     test "it sends a welcome message if it is set" do
       welcome_user = insert(:user)
       Pleroma.Config.put([:welcome, :direct_message, :enabled], true)

From efd6572ffbf4cce86e28d351d3cbddd0a5334980 Mon Sep 17 00:00:00 2001
From: Mark Felder <feld@feld.me>
Date: Fri, 16 Oct 2020 17:43:44 +0000
Subject: [PATCH 08/17] Remove suggestions

---
 config/description.exs | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/config/description.exs b/config/description.exs
index 2bbb12540..79e1368d0 100644
--- a/config/description.exs
+++ b/config/description.exs
@@ -841,12 +841,7 @@ config :pleroma, :config_description, [
         key: :autofollowing_nicknames,
         type: {:list, :string},
         description:
-          "Set to nicknames of (local) users that automatically follows every newly registered user",
-        suggestions: [
-          "admin",
-          "info",
-          "moderator",
-        ]
+          "Set to nicknames of (local) users that automatically follows every newly registered user"
       },
       %{
         key: :attachment_links,

From d54233760f4c006d89aa80e0ae78cb6910fc74ab Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Sat, 17 Oct 2020 13:33:57 +0300
Subject: [PATCH 09/17] [#3053] Post-merge fix.

---
 lib/pleroma/web/feed/user_controller.ex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/pleroma/web/feed/user_controller.ex b/lib/pleroma/web/feed/user_controller.ex
index b66fdf275..a5013d2c0 100644
--- a/lib/pleroma/web/feed/user_controller.ex
+++ b/lib/pleroma/web/feed/user_controller.ex
@@ -5,6 +5,7 @@
 defmodule Pleroma.Web.Feed.UserController do
   use Pleroma.Web, :controller
 
+  alias Pleroma.Config
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.ActivityPubController

From d16336e7fbf7851ee5f50a17747067f2be741581 Mon Sep 17 00:00:00 2001
From: Mark Felder <feld@feld.me>
Date: Sat, 17 Oct 2020 16:54:05 +0000
Subject: [PATCH 10/17] Document autofollowing_nicknames

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36a84b1a8..fd5b9034d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Mix tasks for controlling user account confirmation status in bulk (`mix pleroma.user confirm_all` and `mix pleroma.user unconfirm_all`)
 - Mix task for sending confirmation emails to all unconfirmed users (`mix pleroma.email send_confirmation_mails`)
 - Mix task option for force-unfollowing relays
+- Setting `:instance, autofollowing_nicknames` to provide a way to make accounts automatically follow new users that register on the local Pleroma instance.
 
 ### Changed
 

From 60e379ce0b74bbe1b0f40a954aec040beab20e4e Mon Sep 17 00:00:00 2001
From: lain <lain@soykaf.club>
Date: Fri, 23 Oct 2020 13:53:01 +0200
Subject: [PATCH 11/17] User: Correctly handle whitespace names.

---
 lib/pleroma/user.ex                           |  5 +-
 lib/pleroma/web/activity_pub/activity_pub.ex  |  4 --
 test/fixtures/mewmew_no_name.json             | 46 +++++++++++++++++++
 .../web/activity_pub/activity_pub_test.exs    | 11 +++++
 4 files changed, 60 insertions(+), 6 deletions(-)
 create mode 100644 test/fixtures/mewmew_no_name.json

diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index dc41d0001..72f507f1e 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -426,7 +426,6 @@ defmodule Pleroma.User do
       params,
       [
         :bio,
-        :name,
         :emoji,
         :ap_id,
         :inbox,
@@ -455,7 +454,9 @@ defmodule Pleroma.User do
         :accepts_chat_messages
       ]
     )
-    |> validate_required([:name, :ap_id])
+    |> cast(params, [:name], empty_values: [])
+    |> validate_required([:ap_id])
+    |> validate_required([:name], trim: false)
     |> unique_constraint(:nickname)
     |> validate_format(:nickname, @email_regex)
     |> validate_length(:bio, max: bio_limit)
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index d17c892a7..df18db603 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -1378,10 +1378,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          {:ok, data} <- user_data_from_user_object(data) do
       {:ok, maybe_update_follow_information(data)}
     else
-      {:error, "Object has been deleted" = e} ->
-        Logger.debug("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
-        {:error, e}
-
       {:error, {:reject, reason} = e} ->
         Logger.info("Rejected user #{ap_id}: #{inspect(reason)}")
         {:error, e}
diff --git a/test/fixtures/mewmew_no_name.json b/test/fixtures/mewmew_no_name.json
new file mode 100644
index 000000000..532d4cf70
--- /dev/null
+++ b/test/fixtures/mewmew_no_name.json
@@ -0,0 +1,46 @@
+{
+   "@context" : [
+      "https://www.w3.org/ns/activitystreams",
+      "https://princess.cat/schemas/litepub-0.1.jsonld",
+      {
+         "@language" : "und"
+      }
+   ],
+   "attachment" : [],
+   "capabilities" : {
+      "acceptsChatMessages" : true
+   },
+   "discoverable" : false,
+   "endpoints" : {
+      "oauthAuthorizationEndpoint" : "https://princess.cat/oauth/authorize",
+      "oauthRegistrationEndpoint" : "https://princess.cat/api/v1/apps",
+      "oauthTokenEndpoint" : "https://princess.cat/oauth/token",
+      "sharedInbox" : "https://princess.cat/inbox",
+      "uploadMedia" : "https://princess.cat/api/ap/upload_media"
+   },
+   "followers" : "https://princess.cat/users/mewmew/followers",
+   "following" : "https://princess.cat/users/mewmew/following",
+   "icon" : {
+      "type" : "Image",
+      "url" : "https://princess.cat/media/12794fb50e86911e65be97f69196814049dcb398a2f8b58b99bb6591576e648c.png?name=blobcatpresentpink.png"
+   },
+   "id" : "https://princess.cat/users/mewmew",
+   "image" : {
+      "type" : "Image",
+      "url" : "https://princess.cat/media/05d8bf3953ab6028fc920494ffc643fbee9dcef40d7bdd06f107e19acbfbd7f9.png"
+   },
+   "inbox" : "https://princess.cat/users/mewmew/inbox",
+   "manuallyApprovesFollowers" : true,
+   "name" : " ",
+   "outbox" : "https://princess.cat/users/mewmew/outbox",
+   "preferredUsername" : "mewmew",
+   "publicKey" : {
+      "id" : "https://princess.cat/users/mewmew#main-key",
+      "owner" : "https://princess.cat/users/mewmew",
+      "publicKeyPem" : "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAru7VpygVef4zrFwnj0Mh\nrbO/2z2EdKN3rERtNrT8zWsLXNLQ50lfpRPnGDrd+xq7Rva4EIu0d5KJJ9n4vtY0\nuxK3On9vA2oyjLlR9O0lI3XTrHJborG3P7IPXrmNUMFpHiFHNqHp5tugUrs1gUFq\n7tmOmM92IP4Wjk8qNHFcsfnUbaPTX7sNIhteQKdi5HrTb/6lrEIe4G/FlMKRqxo3\nRNHuv6SNFQuiUKvFzjzazvjkjvBSm+aFROgdHa2tKl88StpLr7xmuY8qNFCRT6W0\nLacRp6c8ah5f03Kd+xCBVhCKvKaF1K0ERnQTBiitUh85md+Mtx/CoDoLnmpnngR3\nvQIDAQAB\n-----END PUBLIC KEY-----\n\n"
+   },
+   "summary" : "please reply to my posts as direct messages if you have many followers",
+   "tag" : [],
+   "type" : "Person",
+   "url" : "https://princess.cat/users/mewmew"
+}
diff --git a/test/pleroma/web/activity_pub/activity_pub_test.exs b/test/pleroma/web/activity_pub/activity_pub_test.exs
index 6ac883b23..43bd14ee6 100644
--- a/test/pleroma/web/activity_pub/activity_pub_test.exs
+++ b/test/pleroma/web/activity_pub/activity_pub_test.exs
@@ -2273,4 +2273,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       assert length(activities) == 2
     end
   end
+
+  test "allow fetching of accounts with an empty string name field" do
+    Tesla.Mock.mock(fn
+      %{method: :get, url: "https://princess.cat/users/mewmew"} ->
+        file = File.read!("test/fixtures/mewmew_no_name.json")
+        %Tesla.Env{status: 200, body: file}
+    end)
+
+    {:ok, user} = ActivityPub.make_user_from_ap_id("https://princess.cat/users/mewmew")
+    assert user.name == " "
+  end
 end

From a999e8b0b73372ed129c5a26acfe73e5f7478c5b Mon Sep 17 00:00:00 2001
From: lain <lain@soykaf.club>
Date: Fri, 23 Oct 2020 13:55:08 +0200
Subject: [PATCH 12/17] Changelog: Add info about whitespace name remote users.

---
 CHANGELOG.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index afeaa930b..1f15a8b95 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,7 +47,8 @@ switched to a new configuration mechanism, however it was not officially removed
 
 - Add documented-but-missing chat pagination.
 - Allow sending out emails again.
-- Allow sending chat messages to yourself
+- Allow sending chat messages to yourself.
+- Fix remote users with a whitespace name.
 
 ## Unreleased (Patch)
 

From de6d49c8cec84a530f2835313c95064ae8df3604 Mon Sep 17 00:00:00 2001
From: lain <lain@soykaf.club>
Date: Mon, 26 Oct 2020 16:33:26 +0100
Subject: [PATCH 13/17] ActivityPub: Add back debug call + explanation.

---
 lib/pleroma/web/activity_pub/activity_pub.ex | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index df18db603..13869f897 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -1378,6 +1378,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          {:ok, data} <- user_data_from_user_object(data) do
       {:ok, maybe_update_follow_information(data)}
     else
+      # If this has been deleted, only log a debug and not an error
+      {:error, "Object has been deleted" = e} ->
+        Logger.debug("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
+        {:error, e}
+
       {:error, {:reject, reason} = e} ->
         Logger.info("Rejected user #{ap_id}: #{inspect(reason)}")
         {:error, e}

From cbe41408e4f77da55d59ee3d4d26d002a1f20f02 Mon Sep 17 00:00:00 2001
From: Mark Felder <feld@FreeBSD.org>
Date: Tue, 27 Oct 2020 14:37:48 -0500
Subject: [PATCH 14/17] phoenix_controller_render_duration is no longer
 available in telemetry of Phoenix 1.5+

---
 test/pleroma/web/endpoint/metrics_exporter_test.exs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/test/pleroma/web/endpoint/metrics_exporter_test.exs b/test/pleroma/web/endpoint/metrics_exporter_test.exs
index f954cc1e7..875addc96 100644
--- a/test/pleroma/web/endpoint/metrics_exporter_test.exs
+++ b/test/pleroma/web/endpoint/metrics_exporter_test.exs
@@ -38,7 +38,6 @@ defmodule Pleroma.Web.Endpoint.MetricsExporterTest do
       for metric <- [
             "http_requests_total",
             "http_request_duration_microseconds",
-            "phoenix_controller_render_duration",
             "phoenix_controller_call_duration",
             "telemetry_scrape_duration",
             "erlang_vm_memory_atom_bytes_total"

From d28f72a55af9442719ff01fe7052802c285f6ea8 Mon Sep 17 00:00:00 2001
From: Maksim Pechnikov <parallel588@gmail.com>
Date: Tue, 27 Oct 2020 22:58:55 +0300
Subject: [PATCH 15/17] FrontStatic plug: excluded invalid url

---
 lib/pleroma/web/plugs/frontend_static.ex      | 26 +++++++++++--------
 .../web/plugs/frontend_static_plug_test.exs   | 21 +++++++++++++++
 2 files changed, 36 insertions(+), 11 deletions(-)

diff --git a/lib/pleroma/web/plugs/frontend_static.ex b/lib/pleroma/web/plugs/frontend_static.ex
index ceb10dcf8..1b0b36813 100644
--- a/lib/pleroma/web/plugs/frontend_static.ex
+++ b/lib/pleroma/web/plugs/frontend_static.ex
@@ -34,22 +34,26 @@ defmodule Pleroma.Web.Plugs.FrontendStatic do
   end
 
   def call(conn, opts) do
-    frontend_type = Map.get(opts, :frontend_type, :primary)
-    path = file_path("", frontend_type)
-
-    if path do
-      conn
-      |> call_static(opts, path)
+    with false <- invalid_path?(conn.path_info),
+         frontend_type <- Map.get(opts, :frontend_type, :primary),
+         path when not is_nil(path) <- file_path("", frontend_type) do
+      call_static(conn, opts, path)
     else
-      conn
+      _ ->
+        conn
     end
   end
 
-  defp call_static(conn, opts, from) do
-    opts =
-      opts
-      |> Map.put(:from, from)
+  defp invalid_path?(list) do
+    invalid_path?(list, :binary.compile_pattern(["/", "\\", ":", "\0"]))
+  end
 
+  defp invalid_path?([h | _], _match) when h in [".", "..", ""], do: true
+  defp invalid_path?([h | t], match), do: String.contains?(h, match) or invalid_path?(t)
+  defp invalid_path?([], _match), do: false
+
+  defp call_static(conn, opts, from) do
+    opts = Map.put(opts, :from, from)
     Plug.Static.call(conn, opts)
   end
 end
diff --git a/test/pleroma/web/plugs/frontend_static_plug_test.exs b/test/pleroma/web/plugs/frontend_static_plug_test.exs
index f6f7d7bdb..8b7b022fc 100644
--- a/test/pleroma/web/plugs/frontend_static_plug_test.exs
+++ b/test/pleroma/web/plugs/frontend_static_plug_test.exs
@@ -4,6 +4,7 @@
 
 defmodule Pleroma.Web.Plugs.FrontendStaticPlugTest do
   use Pleroma.Web.ConnCase
+  import Mock
 
   @dir "test/tmp/instance_static"
 
@@ -53,4 +54,24 @@ defmodule Pleroma.Web.Plugs.FrontendStaticPlugTest do
     index = get(conn, "/pleroma/admin/")
     assert html_response(index, 200) == "from frontend plug"
   end
+
+  test "exclude invalid path", %{conn: conn} do
+    name = "pleroma-fe"
+    ref = "dist"
+    clear_config([:media_proxy, :enabled], true)
+    clear_config([Pleroma.Web.Endpoint, :secret_key_base], "00000000000")
+    clear_config([:frontends, :primary], %{"name" => name, "ref" => ref})
+    path = "#{@dir}/frontends/#{name}/#{ref}"
+
+    File.mkdir_p!("#{path}/proxy/rr/ss")
+    File.write!("#{path}/proxy/rr/ss/Ek7w8WPVcAApOvN.jpg:large", "FB image")
+
+    url =
+      Pleroma.Web.MediaProxy.encode_url("https://pbs.twimg.com/media/Ek7w8WPVcAApOvN.jpg:large")
+
+    with_mock Pleroma.ReverseProxy,
+      call: fn _conn, _url, _opts -> %Plug.Conn{status: :success} end do
+      assert %Plug.Conn{status: :success} = get(conn, url)
+    end
+  end
 end

From da4a1e57b11d5600788b90f21d18bbcd97f6849f Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Wed, 28 Oct 2020 19:09:38 +0300
Subject: [PATCH 16/17] @doc fix.

---
 lib/pleroma/web/static_fe/static_fe_controller.ex | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/pleroma/web/static_fe/static_fe_controller.ex b/lib/pleroma/web/static_fe/static_fe_controller.ex
index 76b82589f..bdec0897a 100644
--- a/lib/pleroma/web/static_fe/static_fe_controller.ex
+++ b/lib/pleroma/web/static_fe/static_fe_controller.ex
@@ -19,7 +19,7 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do
 
   @page_keys ["max_id", "min_id", "limit", "since_id", "order"]
 
-  @doc "Renders requested local public activity"
+  @doc "Renders requested local public activity or public activities of requested user"
   def show(%{assigns: %{notice_id: notice_id}} = conn, _params) do
     with %Activity{local: true} = activity <-
            Activity.get_by_id_with_object(notice_id),
@@ -46,7 +46,6 @@ defmodule Pleroma.Web.StaticFE.StaticFEController do
     end
   end
 
-  @doc "Renders public activities of requested user"
   def show(%{assigns: %{username_or_id: username_or_id}} = conn, params) do
     with {_, %User{local: true} = user} <-
            {:fetch_user, User.get_cached_by_nickname_or_id(username_or_id)},

From 9f5f7dc9f956359204fc44a0627e20fd9765d8bd Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Wed, 28 Oct 2020 22:29:52 +0300
Subject: [PATCH 17/17] Fixed User.is_discoverable attribute rendering in Admin
 API User view.

---
 lib/pleroma/web/admin_api/views/account_view.ex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/pleroma/web/admin_api/views/account_view.ex b/lib/pleroma/web/admin_api/views/account_view.ex
index bda7ea19c..8bac24d3e 100644
--- a/lib/pleroma/web/admin_api/views/account_view.ex
+++ b/lib/pleroma/web/admin_api/views/account_view.ex
@@ -52,7 +52,7 @@ defmodule Pleroma.Web.AdminAPI.AccountView do
       :skip_thread_containment,
       :pleroma_settings_store,
       :raw_fields,
-      :discoverable,
+      :is_discoverable,
       :actor_type
     ])
     |> Map.merge(%{