Verified Commit 3ff9c5e2 authored by Alex Gleason's avatar Alex Gleason
Browse files

Break out activity-specific HTML functions into Pleroma.Activity.HTML

Fixes cycles in lib/pleroma/ecto_type/activity_pub/object_validators/safe_text.ex
parent b221d77a
# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Activity.HTML do
alias Pleroma.HTML
alias Pleroma.Object
@cachex Pleroma.Config.get([:cachex, :provider], Cachex)
def get_cached_scrubbed_html_for_activity(
content,
scrubbers,
activity,
key \\ "",
callback \\ fn x -> x end
) do
key = "#{key}#{generate_scrubber_signature(scrubbers)}|#{activity.id}"
@cachex.fetch!(:scrubber_cache, key, fn _key ->
object = Object.normalize(activity, fetch: false)
HTML.ensure_scrubbed_html(content, scrubbers, object.data["fake"] || false, callback)
end)
end
def get_cached_stripped_html_for_activity(content, activity, key) do
get_cached_scrubbed_html_for_activity(
content,
FastSanitize.Sanitizer.StripTags,
activity,
key,
&HtmlEntities.decode/1
)
end
defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
generate_scrubber_signature([scrubber])
end
defp generate_scrubber_signature(scrubbers) do
Enum.reduce(scrubbers, "", fn scrubber, signature ->
"#{signature}#{to_string(scrubber)}"
end)
end
end
......@@ -49,31 +49,6 @@ def filter_tags(html, scrubber) do
def filter_tags(html), do: filter_tags(html, nil)
def strip_tags(html), do: filter_tags(html, FastSanitize.Sanitizer.StripTags)
def get_cached_scrubbed_html_for_activity(
content,
scrubbers,
activity,
key \\ "",
callback \\ fn x -> x end
) do
key = "#{key}#{generate_scrubber_signature(scrubbers)}|#{activity.id}"
@cachex.fetch!(:scrubber_cache, key, fn _key ->
object = Pleroma.Object.normalize(activity, fetch: false)
ensure_scrubbed_html(content, scrubbers, object.data["fake"] || false, callback)
end)
end
def get_cached_stripped_html_for_activity(content, activity, key) do
get_cached_scrubbed_html_for_activity(
content,
FastSanitize.Sanitizer.StripTags,
activity,
key,
&HtmlEntities.decode/1
)
end
def ensure_scrubbed_html(
content,
scrubbers,
......@@ -92,16 +67,6 @@ def ensure_scrubbed_html(
end
end
defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
generate_scrubber_signature([scrubber])
end
defp generate_scrubber_signature(scrubbers) do
Enum.reduce(scrubbers, "", fn scrubber, signature ->
"#{signature}#{to_string(scrubber)}"
end)
end
def extract_first_external_url_from_object(%{data: %{"content" => content}} = object)
when is_binary(content) do
unless object.data["fake"] do
......
......@@ -254,7 +254,7 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
content_html =
content
|> HTML.get_cached_scrubbed_html_for_activity(
|> Activity.HTML.get_cached_scrubbed_html_for_activity(
User.html_filter_policy(opts[:for]),
activity,
"mastoapi:content"
......@@ -262,7 +262,7 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
content_plaintext =
content
|> HTML.get_cached_stripped_html_for_activity(
|> Activity.HTML.get_cached_stripped_html_for_activity(
activity,
"mastoapi:content"
)
......
......@@ -3,6 +3,7 @@
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Metadata.Utils do
alias Pleroma.Activity
alias Pleroma.Emoji
alias Pleroma.Formatter
alias Pleroma.HTML
......@@ -13,7 +14,7 @@ def scrub_html_and_truncate(%{data: %{"content" => content}} = object) do
# html content comes from DB already encoded, decode first and scrub after
|> HtmlEntities.decode()
|> String.replace(~r/<br\s?\/?>/, " ")
|> HTML.get_cached_stripped_html_for_activity(object, "metadata")
|> Activity.HTML.get_cached_stripped_html_for_activity(object, "metadata")
|> Emoji.Formatter.demojify()
|> HtmlEntities.decode()
|> Formatter.truncate()
......
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