89 lines
2.4 KiB
Elixir
89 lines
2.4 KiB
Elixir
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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.FedSockets.IncomingHandler do
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require Logger
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alias Pleroma.Web.FedSockets.FedRegistry
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alias Pleroma.Web.FedSockets.FedSocket
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alias Pleroma.Web.FedSockets.SocketInfo
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import HTTPSignatures, only: [validate_conn: 1, split_signature: 1]
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@behaviour :cowboy_websocket
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def init(req, state) do
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shake = FedSocket.shake()
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with true <- Pleroma.Config.get([:fed_sockets, :enabled]),
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sec_protocol <- :cowboy_req.header("sec-websocket-protocol", req, nil),
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headers = %{"(request-target)" => ^shake} <- :cowboy_req.headers(req),
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true <- validate_conn(%{req_headers: headers}),
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%{"keyId" => origin} <- split_signature(headers["signature"]) do
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req =
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if is_nil(sec_protocol) do
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req
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else
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:cowboy_req.set_resp_header("sec-websocket-protocol", sec_protocol, req)
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end
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{:cowboy_websocket, req, %{origin: origin}, %{}}
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else
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_ ->
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{:ok, req, state}
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end
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end
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def websocket_init(%{origin: origin}) do
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case FedRegistry.add_fed_socket(origin) do
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{:ok, socket_info} ->
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{:ok, socket_info}
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e ->
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Logger.error("FedSocket websocket_init failed - #{inspect(e)}")
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{:error, inspect(e)}
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end
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end
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# Use the ping to check if the connection should be expired
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def websocket_handle(:ping, socket_info) do
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if SocketInfo.expired?(socket_info) do
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{:stop, socket_info}
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else
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{:ok, socket_info, :hibernate}
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end
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end
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def websocket_handle({:text, data}, socket_info) do
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socket_info = SocketInfo.touch(socket_info)
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case FedSocket.receive_package(socket_info, data) do
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{:noreply, _} ->
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{:ok, socket_info}
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{:reply, reply} ->
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{:reply, {:text, Jason.encode!(reply)}, socket_info}
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{:error, reason} ->
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Logger.error("incoming error - receive_package: #{inspect(reason)}")
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{:ok, socket_info}
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end
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end
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def websocket_info({:send, message}, socket_info) do
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socket_info = SocketInfo.touch(socket_info)
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{:reply, {:text, message}, socket_info}
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end
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def websocket_info(:close, state) do
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{:stop, state}
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end
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def websocket_info(message, state) do
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Logger.debug("#{__MODULE__} unknown message #{inspect(message)}")
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{:ok, state}
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end
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end
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