56 lines
1.3 KiB
Elixir
56 lines
1.3 KiB
Elixir
# Portions of this file are derived from Pleroma:
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# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social>
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# SPDX-License-Identifier: AGPL-3.0-only
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# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/pleroma/plugs/http_signature.ex
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defmodule MobilizonWeb.HTTPSignaturePlug do
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@moduledoc """
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# HTTPSignaturePlug
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Plug to check HTTP Signatures on every incoming request
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"""
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alias Mobilizon.Service.HTTPSignatures
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import Plug.Conn
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require Logger
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def init(options) do
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options
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end
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def call(%{assigns: %{valid_signature: true}} = conn, _opts) do
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conn
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end
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def call(conn, _opts) do
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actor = conn.params["actor"]
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Logger.debug(fn ->
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"Checking sig for #{actor}"
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end)
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[signature | _] = get_req_header(conn, "signature")
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cond do
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# Dialyzer doesn't like this line
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signature && String.contains?(signature, actor) ->
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conn =
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conn
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|> put_req_header(
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"(request-target)",
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String.downcase("#{conn.method}") <> " #{conn.request_path}"
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)
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assign(conn, :valid_signature, HTTPSignatures.validate_conn(conn))
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signature ->
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Logger.debug("Signature not from actor")
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assign(conn, :valid_signature, false)
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true ->
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Logger.debug("No signature header!")
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conn
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end
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end
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end
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