mastodon API: do not sanitize html in non-html fields

CHANGELOG.md

@@ -37,6 +37,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - **Breaking:** Admin API: `PUT /api/pleroma/admin/reports/:id` is now `PATCH /api/pleroma/admin/reports`, see admin_api.md for details
 - **Breaking:** `/api/pleroma/admin/users/invite_token` now uses `POST`, changed accepted params and returns full invite in json instead of only token string.
 - **Breaking** replying to reports is now "report notes", enpoint changed from `POST /api/pleroma/admin/reports/:id/respond` to `POST /api/pleroma/admin/reports/:id/notes`
+- Mastodon API: stopped sanitizing display names, field names and subject fields since they are supposed to be treated as plaintext
 - Admin API: Return `total` when querying for reports
 - Mastodon API: Return `pleroma.direct_conversation_id` when creating a direct message (`POST /api/v1/statuses`)
 - Admin API: Return link alongside with token on password reset

lib/pleroma/web/mastodon_api/views/account_view.ex

@@ -67,7 +67,7 @@ def render("relationships.json", %{user: user, targets: targets}) do
   end
 
   defp do_render("show.json", %{user: user} = opts) do
-    display_name = HTML.strip_tags(user.name || user.nickname)
+    display_name = user.name || user.nickname
 
     image = User.avatar_url(user) |> MediaProxy.url()
     header = User.banner_url(user) |> MediaProxy.url()
@@ -105,7 +105,7 @@ defp do_render("show.json", %{user: user} = opts) do
       |> User.fields()
       |> Enum.map(fn %{"name" => name, "value" => value} ->
         %{
-          "name" => Pleroma.HTML.strip_tags(name),
+          "name" => name,
           "value" => Pleroma.HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
         }
       end)

lib/pleroma/web/mastodon_api/views/poll_view.ex

@@ -5,7 +5,6 @@
 defmodule Pleroma.Web.MastodonAPI.PollView do
   use Pleroma.Web, :view
 
-  alias Pleroma.HTML
   alias Pleroma.Web.CommonAPI.Utils
 
   def render("show.json", %{object: object, multiple: multiple, options: options} = params) do
@@ -57,7 +56,7 @@ defp options_and_votes_count(options) do
       current_count = option["replies"]["totalItems"] || 0
 
       {%{
-         title: HTML.strip_tags(name),
+         title: name,
          votes_count: current_count
        }, current_count + count}
     end)

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -216,21 +216,6 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
 
     summary = object.data["summary"] || ""
 
-    summary_html =
-      summary
-      |> HTML.get_cached_scrubbed_html_for_activity(
-        User.html_filter_policy(opts[:for]),
-        activity,
-        "mastoapi:summary"
-      )
-
-    summary_plaintext =
-      summary
-      |> HTML.get_cached_stripped_html_for_activity(
-        activity,
-        "mastoapi:summary"
-      )
-
     card = render("card.json", Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity))
 
     url =
@@ -282,7 +267,7 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
       muted: thread_muted? || User.mutes?(opts[:for], user),
       pinned: pinned?(activity, user),
       sensitive: sensitive,
-      spoiler_text: summary_html,
+      spoiler_text: summary,
       visibility: get_visibility(object),
       media_attachments: attachments,
       poll: render(PollView, "show.json", object: object, for: opts[:for]),
@@ -299,7 +284,7 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
         conversation_id: get_context_id(activity),
         in_reply_to_account_acct: reply_to_user && reply_to_user.nickname,
         content: %{"text/plain" => content_plaintext},
-        spoiler_text: %{"text/plain" => summary_plaintext},
+        spoiler_text: %{"text/plain" => summary},
         expires_at: expires_at,
         direct_conversation_id: direct_conversation_id,
         thread_muted: thread_muted?,

test/web/mastodon_api/controllers/account_controller/update_credentials_test.exs

@@ -269,7 +269,7 @@ test "update fields", %{conn: conn} do
         |> json_response(200)
 
       assert account_data["fields"] == [
-               %{"name" => "foo", "value" => "bar"},
+               %{"name" => "<a href=\"http://google.com\">foo</a>", "value" => "bar"},
                %{"name" => "link", "value" => ~S(<a href="http://cofe.io" rel="ugc">cofe.io</a>)}
              ]
 
@@ -297,7 +297,7 @@ test "update fields", %{conn: conn} do
         |> json_response(200)
 
       assert account["fields"] == [
-               %{"name" => "foo", "value" => "bar"},
+               %{"name" => "<a href=\"http://google.com\">foo</a>", "value" => "bar"},
                %{"name" => "link", "value" => ~S(<a href="http://cofe.io" rel="ugc">cofe.io</a>)}
              ]
 

test/web/mastodon_api/views/account_view_test.exs

@@ -368,10 +368,10 @@ test "returns the settings store if the requesting user is the represented user
     assert result.pleroma[:settings_store] == nil
   end
 
-  test "sanitizes display names" do
+  test "doesn't sanitize display names" do
     user = insert(:user, name: "<marquee> username </marquee>")
     result = AccountView.render("show.json", %{user: user})
-    refute result.display_name == "<marquee> username </marquee>"
+    assert result.display_name == "<marquee> username </marquee>"
   end
 
   test "never display nil user follow counts" do