From 846082e54fcb9dceda476282c54d8cd36986203c Mon Sep 17 00:00:00 2001
From: Rin Toshaka <rinpatch@sdf.org>
Date: Sat, 5 Jan 2019 00:19:46 +0100
Subject: [PATCH] Different caches based on the module. Remove scrubber version
 since it is not relevant anymore

---
 lib/pleroma/html.ex                           | 30 ++++---------------
 .../web/mastodon_api/views/status_view.ex     |  6 +++-
 .../web/twitter_api/views/activity_view.ex    |  8 +++--
 3 files changed, 16 insertions(+), 28 deletions(-)

diff --git a/lib/pleroma/html.ex b/lib/pleroma/html.ex
index 71db516e6..41d41e535 100644
--- a/lib/pleroma/html.ex
+++ b/lib/pleroma/html.ex
@@ -28,13 +28,13 @@ defmodule Pleroma.HTML do
   def filter_tags(html), do: filter_tags(html, nil)
   def strip_tags(html), do: Scrubber.scrub(html, Scrubber.StripTags)
 
-  def get_cached_scrubbed_html_for_object(content, scrubbers, object) do
-    key = "#{generate_scrubber_signature(scrubbers)}|#{object.id}"
+  def get_cached_scrubbed_html_for_object(content, scrubbers, object, module) do
+    key = "#{module}#{generate_scrubber_signature(scrubbers)}|#{object.id}"
     Cachex.fetch!(:scrubber_cache, key, fn _key -> ensure_scrubbed_html(content, scrubbers) end)
   end
 
-  def get_cached_stripped_html_for_object(content, object) do
-    get_cached_scrubbed_html_for_object(content, HtmlSanitizeEx.Scrubber.StripTags, object)
+  def get_cached_stripped_html_for_object(content, object, module) do
+    get_cached_scrubbed_html_for_object(content, HtmlSanitizeEx.Scrubber.StripTags, object, module)
   end
 
   def ensure_scrubbed_html(
@@ -50,15 +50,7 @@ defmodule Pleroma.HTML do
 
   defp generate_scrubber_signature(scrubbers) do
     Enum.reduce(scrubbers, "", fn scrubber, signature ->
-      # If a scrubber does not have a version(e.g HtmlSanitizeEx.Scrubber.StripTags) it is assumed it is always 0)
-      version =
-        if Kernel.function_exported?(scrubber, :version, 0) do
-          scrubber.version
-        else
-          0
-        end
-
-      "#{signature}#{to_string(scrubber)}#{version}"
+      "#{signature}#{to_string(scrubber)}"
     end)
   end
 end
@@ -76,10 +68,6 @@ defmodule Pleroma.HTML.Scrubber.TwitterText do
   require HtmlSanitizeEx.Scrubber.Meta
   alias HtmlSanitizeEx.Scrubber.Meta
 
-  def version do
-    0
-  end
-
   Meta.remove_cdata_sections_before_scrub()
   Meta.strip_comments()
 
@@ -118,10 +106,6 @@ defmodule Pleroma.HTML.Scrubber.Default do
   require HtmlSanitizeEx.Scrubber.Meta
   alias HtmlSanitizeEx.Scrubber.Meta
 
-  def version do
-    0
-  end
-
   @markup Application.get_env(:pleroma, :markup)
   @uri_schemes Application.get_env(:pleroma, :uri_schemes, [])
   @valid_schemes Keyword.get(@uri_schemes, :valid_schemes, [])
@@ -199,10 +183,6 @@ defmodule Pleroma.HTML.Transform.MediaProxy do
 
   alias Pleroma.Web.MediaProxy
 
-  def version do
-    0
-  end
-
   def before_scrub(html), do: html
 
   def scrub_attribute("img", {"src", "http" <> target}) do
diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex
index 477ab3b5f..8e8fa8121 100644
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@@ -120,7 +120,11 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     content =
       object
       |> render_content()
-      |> HTML.get_cached_scrubbed_html_for_object(User.html_filter_policy(opts[:for]), activity)
+      |> HTML.get_cached_scrubbed_html_for_object(
+        User.html_filter_policy(opts[:for]),
+        activity,
+        __MODULE__
+      )
 
     %{
       id: to_string(activity.id),
diff --git a/lib/pleroma/web/twitter_api/views/activity_view.ex b/lib/pleroma/web/twitter_api/views/activity_view.ex
index 84f35ebf9..a0be5cfc5 100644
--- a/lib/pleroma/web/twitter_api/views/activity_view.ex
+++ b/lib/pleroma/web/twitter_api/views/activity_view.ex
@@ -245,14 +245,18 @@ defmodule Pleroma.Web.TwitterAPI.ActivityView do
 
     html =
       content
-      |> HTML.get_cached_scrubbed_html_for_object(User.html_filter_policy(opts[:for]), activity)
+      |> HTML.get_cached_scrubbed_html_for_object(
+        User.html_filter_policy(opts[:for]),
+        activity,
+        __MODULE__
+      )
       |> Formatter.emojify(object["emoji"])
 
     text =
       if content do
         content
         |> String.replace(~r/<br\s?\/?>/, "\n")
-        |> HTML.get_cached_stripped_html_for_object(activity)
+        |> HTML.get_cached_stripped_html_for_object(activity, __MODULE__)
       end
 
     reply_parent = Activity.get_in_reply_to_activity(activity)