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