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construct/include/ircd/net/acceptor.h

94 lines
3.1 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_NET_ACCEPTOR_H
// This file is not included with the IRCd standard include stack because
// it requires symbols we can't forward declare without boost headers. It
// is part of the <ircd/asio.h> stack which can be included in your
// definition file if you need low level access to this acceptor API.
/// Implementation to net::listener. See listener.h for additional interface.
struct [[gnu::visibility("protected")]]
ircd::net::acceptor
:std::enable_shared_from_this<struct ircd::net::acceptor>
{
using error_code = boost::system::error_code;
using callback = listener::callback;
using proffer = listener::proffer;
using sockets = std::list<std::shared_ptr<socket>>;
IRCD_EXCEPTION(listener::error, error)
IRCD_EXCEPTION(error, sni_warning)
static log::log log;
static ios::descriptor accept_desc;
static ios::descriptor handshake_desc;
static conf::item<size_t> handshaking_max;
static conf::item<size_t> handshaking_max_per_peer;
static conf::item<milliseconds> timeout;
static conf::item<std::string> ssl_curve_list;
static conf::item<std::string> ssl_cipher_list;
static conf::item<std::string> ssl_cipher_blacklist;
net::listener *listener_;
std::string name;
std::string opts;
std::string cname;
size_t backlog;
listener::callback cb;
listener::proffer pcb;
asio::ssl::context ssl;
ip::tcp::endpoint ep;
ip::tcp::acceptor a;
size_t accepting {0};
sockets handshaking;
bool interrupting {false};
ctx::dock joining;
// Internal configuration
void configure_dh(const json::object &);
void configure_certs(const json::object &);
void configure_curves(const json::object &);
void configure_ciphers(const json::object &);
void configure_flags(const json::object &);
void configure_password(const json::object &);
void configure(const json::object &opts);
// Handshake stack
bool handle_sni(socket &, int &ad);
string_view handle_alpn(socket &, const vector_view<const string_view> &in);
void check_handshake_error(const error_code &ec, socket &) const;
void handshake(const error_code &, const std::shared_ptr<socket>, const decltype(handshaking)::const_iterator) noexcept;
// Acceptance stack
static bool proffer_default(listener &, const ipport &);
bool check_handshake_limit(socket &, const ipport &) const;
bool check_accept_error(const error_code &ec, socket &) const;
void accept(const error_code &, const std::shared_ptr<socket>) noexcept;
// Accept next
bool set_handle();
// Acceptor shutdown
bool interrupt() noexcept;
void join() noexcept;
void close();
void open();
acceptor(net::listener &,
const string_view &name,
const json::object &opts,
listener::callback,
listener::proffer);
~acceptor() noexcept;
};