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defmodule MatrixAppService.AuthPlug do
@behaviour Plug
import Plug.Conn
require Logger
@impl Plug
def init(opts) do
opts
end
@impl Plug
def call(%Plug.Conn{params: %{"access_token" => hs_token}} = conn, _) do
config_hs_token = Application.fetch_env!(:matrix_app_service, :homeserver_token)
with ^config_hs_token <- hs_token do
conn
else
_ ->
Logger.warn("Received invalid homeserver token")
respond_error(conn, 403)
end
end
def call(conn, _config_hs_token) do
Logger.warn("No homeserver token provided")
respond_error(conn, 401)
end
defp respond_error(conn, error_code) do
conn
|> put_status(error_code)
|> Phoenix.Controller.put_view(MatrixAppServiceWeb.ErrorView)
|> Phoenix.Controller.render("#{error_code}.json")
|> halt
end
end
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