@markup Application.get_env(:pleroma, :markup)
+ defp get_scrubbers(scrubber) when is_atom(scrubber), do: [scrubber]
+ defp get_scrubbers(scrubbers) when is_list(scrubbers), do: scrubbers
+ defp get_scrubbers(_), do: [Pleroma.HTML.Scrubber.Default]
+
+ def get_scrubbers() do
+ Keyword.get(@markup, :scrub_policy)
+ |> get_scrubbers
+ end
+
+ def filter_tags(html, nil) do
+ get_scrubbers()
+ |> Enum.reduce(html, fn scrubber, html ->
+ filter_tags(html, scrubber)
+ end)
+ end
+
def filter_tags(html, scrubber) do
html |> Scrubber.scrub(scrubber)
end
- def filter_tags(html) do
- scrubber = Keyword.get(@markup, :scrub_policy)
- filter_tags(html, scrubber)
- end
+ def filter_tags(html), do: filter_tags(html, nil)
def strip_tags(html) do
html |> Scrubber.scrub(Scrubber.StripTags)
paragraphs, breaks and links are allowed through the filter.
"""
+ @markup Application.get_env(:pleroma, :markup)
+ @uri_schemes Application.get_env(:pleroma, :uri_schemes, [])
+ @valid_schemes Keyword.get(@uri_schemes, :valid_schemes, [])
+
require HtmlSanitizeEx.Scrubber.Meta
alias HtmlSanitizeEx.Scrubber.Meta
- @valid_schemes ["http", "https"]
-
Meta.remove_cdata_sections_before_scrub()
Meta.strip_comments()
Meta.allow_tag_with_these_attributes("span", [])
# allow inline images for custom emoji
- @markup Application.get_env(:pleroma, :markup)
@allow_inline_images Keyword.get(@markup, :allow_inline_images)
if @allow_inline_images do
- Meta.allow_tag_with_uri_attributes("img", ["src"], @valid_schemes)
+ # 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",
"alt"
])
end
+
+ Meta.strip_everything_not_covered()
end
defmodule Pleroma.HTML.Scrubber.Default do
require HtmlSanitizeEx.Scrubber.Meta
alias HtmlSanitizeEx.Scrubber.Meta
- @valid_schemes ["http", "https"]
+ @markup Application.get_env(:pleroma, :markup)
+ @uri_schemes Application.get_env(:pleroma, :uri_schemes, [])
+ @valid_schemes Keyword.get(@uri_schemes, :valid_schemes, [])
Meta.remove_cdata_sections_before_scrub()
Meta.strip_comments()
Meta.allow_tag_with_uri_attributes("a", ["href"], @valid_schemes)
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("u", [])
Meta.allow_tag_with_these_attributes("ul", [])
- @markup Application.get_env(:pleroma, :markup)
@allow_inline_images Keyword.get(@markup, :allow_inline_images)
if @allow_inline_images do
- Meta.allow_tag_with_uri_attributes("img", ["src"], @valid_schemes)
+ # 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",
Meta.strip_everything_not_covered()
end
+
+defmodule Pleroma.HTML.Transform.MediaProxy do
+ @moduledoc "Transforms inline image URIs to use MediaProxy."
+
+ alias Pleroma.Web.MediaProxy
+
+ def before_scrub(html), do: html
+
+ def scrub_attribute("img", {"src", "http" <> target}) do
+ media_url =
+ ("http" <> target)
+ |> MediaProxy.url()
+
+ {"src", media_url}
+ end
+
+ def scrub_attribute(tag, attribute), do: attribute
+
+ def scrub({"img", attributes, children}) do
+ attributes =
+ attributes
+ |> Enum.map(fn attr -> scrub_attribute("img", attr) end)
+ |> Enum.reject(&is_nil(&1))
+
+ {"img", attributes, children}
+ end
+
+ def scrub({:comment, children}), do: ""
+
+ def scrub({tag, attributes, children}), do: {tag, attributes, children}
+ def scrub({tag, children}), do: children
+ def scrub(text), do: text
+end