Fix get_cached_by_nickname_or_id not allowing to get local users by

nickname

Closes #1293

CHANGELOG.md

@@ -23,6 +23,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Fixed
 - Mastodon API: Fix private and direct statuses not being filtered out from the public timeline for an authenticated user (`GET /api/v1/timelines/public`)
+- Mastodon API: Inability to get some local users by nickname in `/api/v1/accounts/:id_or_nickname`
 
 ## [1.1.0] - 2019-??-??
 ### Security

lib/pleroma/user.ex

@@ -583,7 +583,7 @@ def get_cached_by_nickname_or_id(nickname_or_id, opts \\ []) do
       is_integer(nickname_or_id) or FlakeId.flake_id?(nickname_or_id) ->
         get_cached_by_id(nickname_or_id) || get_cached_by_nickname(nickname_or_id)
 
-      restrict_to_local == false ->
+      restrict_to_local == false or not String.contains?(nickname_or_id, "@") ->
         get_cached_by_nickname(nickname_or_id)
 
       restrict_to_local == :unauthenticated and match?(%User{}, opts[:for]) ->

test/user_test.exs

@@ -1725,4 +1725,61 @@ test "update_info/2" do
     assert %{info: %{hide_follows: true}} = Repo.get(User, user.id)
     assert {:ok, %{info: %{hide_follows: true}}} = Cachex.get(:user_cache, "ap_id:#{user.ap_id}")
   end
+
+  describe "get_cached_by_nickname_or_id" do
+    setup do
+      limit_to_local_content = Pleroma.Config.get([:instance, :limit_to_local_content])
+      local_user = insert(:user)
+      remote_user = insert(:user, nickname: "nickname@example.com", local: false)
+
+      on_exit(fn ->
+        Pleroma.Config.put([:instance, :limit_to_local_content], limit_to_local_content)
+      end)
+
+      [local_user: local_user, remote_user: remote_user]
+    end
+
+    test "allows getting remote users by id no matter what :limit_to_local_content is set to", %{
+      remote_user: remote_user
+    } do
+      Pleroma.Config.put([:instance, :limit_to_local_content], false)
+      assert %User{} = User.get_cached_by_nickname_or_id(remote_user.id)
+
+      Pleroma.Config.put([:instance, :limit_to_local_content], true)
+      assert %User{} = User.get_cached_by_nickname_or_id(remote_user.id)
+
+      Pleroma.Config.put([:instance, :limit_to_local_content], :unauthenticated)
+      assert %User{} = User.get_cached_by_nickname_or_id(remote_user.id)
+    end
+
+    test "disallows getting remote users by nickname without authentication when :limit_to_local_content is set to :unauthenticated",
+         %{remote_user: remote_user} do
+      Pleroma.Config.put([:instance, :limit_to_local_content], :unauthenticated)
+      assert nil == User.get_cached_by_nickname_or_id(remote_user.nickname)
+    end
+
+    test "allows getting remote users by nickname with authentication when :limit_to_local_content is set to :unauthenticated",
+         %{remote_user: remote_user, local_user: local_user} do
+      Pleroma.Config.put([:instance, :limit_to_local_content], :unauthenticated)
+      assert %User{} = User.get_cached_by_nickname_or_id(remote_user.nickname, for: local_user)
+    end
+
+    test "disallows getting remote users by nickname when :limit_to_local_content is set to true",
+         %{remote_user: remote_user} do
+      Pleroma.Config.put([:instance, :limit_to_local_content], true)
+      assert nil == User.get_cached_by_nickname_or_id(remote_user.nickname)
+    end
+
+    test "allows getting local users by nickname no matter what :limit_to_local_content is set to",
+         %{local_user: local_user} do
+      Pleroma.Config.put([:instance, :limit_to_local_content], false)
+      assert %User{} = User.get_cached_by_nickname_or_id(local_user.nickname)
+
+      Pleroma.Config.put([:instance, :limit_to_local_content], true)
+      assert %User{} = User.get_cached_by_nickname_or_id(local_user.nickname)
+
+      Pleroma.Config.put([:instance, :limit_to_local_content], :unauthenticated)
+      assert %User{} = User.get_cached_by_nickname_or_id(local_user.nickname)
+    end
+  end
 end