html: add policy which transforms inline images to pass through the media proxy

This commit is contained in:
William Pitcock 2018-09-16 02:07:32 +00:00
parent cd13fa17fd
commit a7d0ecdc7c

View file

@ -142,3 +142,34 @@ defmodule Pleroma.HTML.Scrubber.Default do
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({tag, attributes, children}), do: {tag, attributes, children}
def scrub({tag, children}), do: children
def scrub(text), do: text
end