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- # Pleroma: A lightweight social networking server
- # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
- # SPDX-License-Identifier: AGPL-3.0-only
-
- defmodule Pleroma.Web.RelMe do
- @options [
- pool: :media,
- max_body: 2_000_000,
- recv_timeout: 2_000
- ]
-
- if Pleroma.Config.get(:env) == :test do
- def parse(url) when is_binary(url), do: parse_url(url)
- else
- @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
- def parse(url) when is_binary(url) do
- @cachex.fetch!(:rel_me_cache, url, fn _ ->
- {:commit, parse_url(url)}
- end)
- rescue
- e -> {:error, "Cachex error: #{inspect(e)}"}
- end
- end
-
- def parse(_), do: {:error, "No URL provided"}
-
- defp parse_url(url) do
- with {:ok, %Tesla.Env{body: html, status: status}} when status in 200..299 <-
- Pleroma.HTTP.get(url, [], @options),
- {:ok, html_tree} <- Floki.parse_document(html),
- data <-
- Floki.attribute(html_tree, "link[rel~=me]", "href") ++
- Floki.attribute(html_tree, "a[rel~=me]", "href") do
- {:ok, data}
- end
- rescue
- e -> {:error, "Parsing error: #{inspect(e)}"}
- end
-
- def maybe_put_rel_me("http" <> _ = target_page, profile_urls) when is_list(profile_urls) do
- {:ok, rel_me_hrefs} = parse(target_page)
-
- true = Enum.any?(rel_me_hrefs, fn x -> x in profile_urls end)
-
- "me"
- rescue
- _ -> nil
- end
-
- def maybe_put_rel_me(_, _) do
- nil
- end
- end
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