mobilizon/lib/service/formatter/default_scrubbler.ex

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# Portions of this file are derived from Pleroma:
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social>
# SPDX-License-Identifier: AGPL-3.0-only
# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/html.ex
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defmodule Mobilizon.Service.Formatter.DefaultScrubbler do
@moduledoc """
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Custom strategy to filter HTML content.
"""
require FastSanitize.Sanitizer.Meta
alias FastSanitize.Sanitizer.Meta
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# credo:disable-for-previous-line
# No idea how to fix this one…
@valid_schemes ~w(https http)
Meta.strip_comments()
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",
"ugc"
])
Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
Meta.allow_tag_with_these_attributes(:abbr, ["title"])
Meta.allow_tag_with_these_attributes(:b, [])
Meta.allow_tag_with_these_attributes(:blockquote, [])
Meta.allow_tag_with_these_attributes(:br, [])
Meta.allow_tag_with_these_attributes(:code, [])
Meta.allow_tag_with_these_attributes(:del, [])
Meta.allow_tag_with_these_attributes(:em, [])
Meta.allow_tag_with_these_attributes(:i, [])
Meta.allow_tag_with_these_attributes(:li, [])
Meta.allow_tag_with_these_attributes(:ol, [])
Meta.allow_tag_with_these_attributes(:p, [])
Meta.allow_tag_with_these_attributes(:pre, [])
Meta.allow_tag_with_these_attributes(:strong, [])
Meta.allow_tag_with_these_attributes(:u, [])
Meta.allow_tag_with_these_attributes(:ul, [])
Meta.allow_tag_with_uri_attributes(:img, ["src"], @valid_schemes)
Meta.allow_tag_with_these_attributes(:img, [
"width",
"height",
"class",
"title",
"alt",
"data-media-id"
])
Meta.allow_tag_with_this_attribute_values(:span, "class", ["h-card", "mention"])
Meta.allow_tag_with_these_attributes(:span, ["data-user"])
Meta.allow_tag_with_these_attributes(:h1, [])
Meta.allow_tag_with_these_attributes(:h2, [])
Meta.allow_tag_with_these_attributes(:h3, [])
Meta.allow_tag_with_these_attributes(:h4, [])
Meta.allow_tag_with_these_attributes(:h5, [])
Meta.allow_tag_with_these_attributes(:hr, [])
Meta.strip_everything_not_covered()
end