Pleroma/lib/pleroma/web/metadata.ex

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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Metadata do
alias Phoenix.HTML
def build_tags(params) do
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providers = [
Pleroma.Web.Metadata.Providers.Feed,
Pleroma.Web.Metadata.Providers.RelMe,
Pleroma.Web.Metadata.Providers.RestrictIndexing
| activated_providers()
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]
Enum.reduce(providers, "", fn parser, acc ->
rendered_html =
params
|> parser.build_tags()
|> Enum.map(&to_tag/1)
|> Enum.map(&HTML.safe_to_string/1)
|> Enum.join()
acc <> rendered_html
end)
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end
def to_tag(data) do
with {name, attrs, _content = []} <- data do
HTML.Tag.tag(name, attrs)
else
{name, attrs, content} ->
HTML.Tag.content_tag(name, content, attrs)
_ ->
raise ArgumentError, message: "make_tag invalid args"
end
end
def activity_nsfw?(%{data: %{"sensitive" => sensitive}}) do
Pleroma.Config.get([__MODULE__, :unfurl_nsfw], false) == false and sensitive
end
def activity_nsfw?(_) do
false
end
defp activated_providers do
if Pleroma.Config.get!([:instance, :public]) do
Pleroma.Config.get([__MODULE__, :providers], [])
else
[]
end
end
end