diff options
Diffstat (limited to 'priv/scrubbers/twitter_text.ex')
| -rw-r--r-- | priv/scrubbers/twitter_text.ex | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/priv/scrubbers/twitter_text.ex b/priv/scrubbers/twitter_text.ex new file mode 100644 index 0000000..6e23b3e --- /dev/null +++ b/priv/scrubbers/twitter_text.ex @@ -0,0 +1,62 @@ +# Pleroma: A lightweight social networking server +# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/> +# SPDX-License-Identifier: AGPL-3.0-only + +defmodule Pleroma.HTML.Scrubber.TwitterText do + @moduledoc """ + An HTML scrubbing policy which limits to twitter-style text. Only + paragraphs, breaks and links are allowed through the filter. + """ + + @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], []) + + require FastSanitize.Sanitizer.Meta + alias FastSanitize.Sanitizer.Meta + + Meta.strip_comments() + + # links + Meta.allow_tag_with_uri_attributes(:a, ["href", "data-user", "data-tag"], @valid_schemes) + + Meta.allow_tag_with_this_attribute_values(:a, "class", [ + "hashtag", + "u-url", + "mention", + "u-url mention", + "mention u-url" + ]) + + Meta.allow_tag_with_this_attribute_values(:a, "rel", [ + "tag", + "nofollow", + "noopener", + "noreferrer" + ]) + + Meta.allow_tag_with_these_attributes(:a, ["name", "title"]) + + # paragraphs and linebreaks + Meta.allow_tag_with_these_attributes(:br, []) + Meta.allow_tag_with_these_attributes(:p, []) + + # microformats + Meta.allow_tag_with_this_attribute_values(:span, "class", ["h-card"]) + Meta.allow_tag_with_these_attributes(:span, []) + + # allow inline images for custom emoji + if Pleroma.Config.get([:markup, :allow_inline_images]) do + Meta.allow_tag_with_this_attribute_values(:img, "class", ["emoji"]) + + # restrict img tags to http/https only, because of MediaProxy. + Meta.allow_tag_with_uri_attributes(:img, ["src"], ["http", "https"]) + + Meta.allow_tag_with_these_attributes(:img, [ + "width", + "height", + "title", + "alt" + ]) + end + + Meta.strip_everything_not_covered() +end |
