akkoma/lib/pleroma/plugs/http_signature.ex

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defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
alias Pleroma.Web.HTTPSignatures
import Plug.Conn
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require Logger
def init(options) do
options
end
def call(%{assigns: %{valid_signature: true}} = conn, opts) do
conn
end
def call(conn, opts) do
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user = conn.params["actor"]
Logger.debug("Checking sig for #{user}")
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if get_req_header(conn, "signature") do
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conn =
conn
|> put_req_header(
"(request-target)",
String.downcase("#{conn.method}") <> " #{conn.request_path}"
)
assign(conn, :valid_signature, HTTPSignatures.validate_conn(conn))
else
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Logger.debug("No signature header!")
conn
end
end
end