2 files changed, 50 insertions, 24 deletions

diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index fb3bd121d..c1aebfc29 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -104,9 +104,8 @@ defmodule Pleroma.User do
     "#{Web.base_url()}/users/#{nickname}"
   end
 
-  def ap_followers(%User{} = user) do
-    "#{ap_id(user)}/followers"
-  end
+  def ap_followers(%User{follower_address: fa}) when is_binary(fa), do: fa
+  def ap_followers(%User{} = user), do: "#{ap_id(user)}/followers"
 
   def user_info(%User{} = user) do
     oneself = if user.local, do: 1, else: 0
@@ -789,34 +788,27 @@ defmodule Pleroma.User do
 
   @spec search_for_admin(%{
           query: binary(),
-          admin: Pleroma.User.t(),
           local: boolean(),
           page: number(),
           page_size: number()
         }) :: {:ok, [Pleroma.User.t()], number()}
   def search_for_admin(%{
         query: term,
-        admin: admin,
         local: local,
         page: page,
         page_size: page_size
       }) do
-    term = String.trim_leading(term, "@")
-
-    local_paginated_query =
-      User
-      |> maybe_local_user_query(local)
-      |> paginate(page, page_size)
+    maybe_local_query = User |> maybe_local_user_query(local)
 
-    search_query = fts_search_subquery(term, local_paginated_query)
+    search_query = from(u in maybe_local_query, where: ilike(u.nickname, ^"%#{term}%"))
+    count = search_query |> Repo.aggregate(:count, :id)
 
-    count =
-      term
-      |> fts_search_subquery()
-      |> maybe_local_user_query(local)
-      |> Repo.aggregate(:count, :id)
+    results =
+      search_query
+      |> paginate(page, page_size)
+      |> Repo.all()
 
-    {:ok, do_search(search_query, admin), count}
+    {:ok, results, count}
   end
 
   def search(query, resolve \\ false, for_user \\ nil) do
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 8e4bf7b47..f733ae7e1 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -86,11 +86,15 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   end
 
   def fix_addressing_list(map, field) do
-    if is_binary(map[field]) do
-      map
-      |> Map.put(field, [map[field]])
-    else
-      map
+    cond do
+      is_binary(map[field]) ->
+        Map.put(map, field, [map[field]])
+
+      is_nil(map[field]) ->
+        Map.put(map, field, [])
+
+      true ->
+        map
     end
   end
 
@@ -128,13 +132,42 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> fix_explicit_addressing(explicit_mentions)
   end
 
+  # if as:Public is addressed, then make sure the followers collection is also addressed
+  # so that the activities will be delivered to local users.
+  def fix_implicit_addressing(%{"to" => to, "cc" => cc} = object, followers_collection) do
+    recipients = to ++ cc
+
+    if followers_collection not in recipients do
+      cond do
+        "https://www.w3.org/ns/activitystreams#Public" in cc ->
+          to = to ++ [followers_collection]
+          Map.put(object, "to", to)
+
+        "https://www.w3.org/ns/activitystreams#Public" in to ->
+          cc = cc ++ [followers_collection]
+          Map.put(object, "cc", cc)
+
+        true ->
+          object
+      end
+    else
+      object
+    end
+  end
+
+  def fix_implicit_addressing(object, _), do: object
+
   def fix_addressing(object) do
+    %User{} = user = User.get_or_fetch_by_ap_id(object["actor"])
+    followers_collection = User.ap_followers(user)
+
     object
     |> fix_addressing_list("to")
     |> fix_addressing_list("cc")
     |> fix_addressing_list("bto")
     |> fix_addressing_list("bcc")
     |> fix_explicit_addressing
+    |> fix_implicit_addressing(followers_collection)
   end
 
   def fix_actor(%{"attributedTo" => actor} = object) do
@@ -922,7 +955,8 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   defp strip_internal_tags(object), do: object
 
   defp user_upgrade_task(user) do
-    old_follower_address = User.ap_followers(user)
+    # we pass a fake user so that the followers collection is stripped away
+    old_follower_address = User.ap_followers(%User{nickname: user.nickname})
 
     q =
       from(