+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.HTML do
alias HtmlSanitizeEx.Scrubber
end
def filter_tags(html, nil) do
- get_scrubbers()
- |> Enum.reduce(html, fn scrubber, html ->
+ filter_tags(html, get_scrubbers())
+ end
+
+ def filter_tags(html, scrubbers) when is_list(scrubbers) do
+ Enum.reduce(scrubbers, html, fn scrubber, html ->
filter_tags(html, scrubber)
end)
end
- def filter_tags(html, scrubber) do
- html |> Scrubber.scrub(scrubber)
+ def filter_tags(html, scrubber), do: Scrubber.scrub(html, scrubber)
+ 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}"
+ Cachex.fetch!(:scrubber_cache, key, fn _key -> ensure_scrubbed_html(content, scrubbers) end)
end
- def filter_tags(html), do: filter_tags(html, nil)
+ def get_cached_stripped_html_for_object(content, object) do
+ get_cached_scrubbed_html_for_object(content, HtmlSanitizeEx.Scrubber.StripTags, object)
+ end
+
+ def ensure_scrubbed_html(
+ content,
+ scrubbers
+ ) do
+ {:commit, filter_tags(content, scrubbers)}
+ end
- def strip_tags(html) do
- html |> Scrubber.scrub(Scrubber.StripTags)
+ 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 ->
+ # 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}"
+ end)
end
end
require HtmlSanitizeEx.Scrubber.Meta
alias HtmlSanitizeEx.Scrubber.Meta
+ def version do
+ 0
+ end
+
Meta.remove_cdata_sections_before_scrub()
Meta.strip_comments()
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, [])
alias Pleroma.Web.MediaProxy
+ def version do
+ 0
+ end
+
def before_scrub(html), do: html
def scrub_attribute("img", {"src", "http" <> target}) do
{"src", media_url}
end
- def scrub_attribute(tag, attribute), do: attribute
+ def scrub_attribute(_tag, attribute), do: attribute
def scrub({"img", attributes, children}) do
attributes =
{"img", attributes, children}
end
- def scrub({:comment, children}), do: ""
+ def scrub({:comment, _children}), do: ""
def scrub({tag, attributes, children}), do: {tag, attributes, children}
- def scrub({tag, children}), do: children
+ def scrub({_tag, children}), do: children
def scrub(text), do: text
end