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/*
* Copyright 2003-2018 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_SERVER_SOCKET_HXX
#define MPD_SERVER_SOCKET_HXX
#include <list>
class SocketAddress;
class AllocatedSocketAddress;
class UniqueSocketDescriptor;
class EventLoop;
class AllocatedPath;
/**
* A socket that accepts incoming stream connections (e.g. TCP).
*/
class ServerSocket {
class OneServerSocket;
EventLoop &loop;
std::list<OneServerSocket> sockets;
unsigned next_serial = 1;
public:
ServerSocket(EventLoop &_loop) noexcept;
~ServerSocket() noexcept;
EventLoop &GetEventLoop() const noexcept {
return loop;
}
private:
template<typename A>
OneServerSocket &AddAddress(A &&address) noexcept;
/**
* Add a listener on a port on all IPv4 interfaces.
*
* @param port the TCP port
*/
void AddPortIPv4(unsigned port) noexcept;
/**
* Add a listener on a port on all IPv6 interfaces.
*
* @param port the TCP port
*/
void AddPortIPv6(unsigned port) noexcept;
public:
/**
* Add a listener on a port on all interfaces.
*
* Throws #std::runtime_error on error.
*
* @param port the TCP port
* @param error location to store the error occurring
*/
void AddPort(unsigned port);
/**
* Resolves a host name, and adds listeners on all addresses in the
* result set.
*
* Throws #std::runtime_error on error.
*
* @param hostname the host name to be resolved
* @param port the TCP port
* @param error location to store the error occurring
*/
void AddHost(const char *hostname, unsigned port);
/**
* Add a listener on a local socket.
*
* Throws #std::runtime_error on error.
*
* @param path the absolute socket path
* @param error location to store the error occurring
*/
void AddPath(AllocatedPath &&path);
#ifdef __linux__
/**
* Add a listener on an abstract local socket (Linux specific).
*
* Throws on error.
*
* @param name the abstract socket name, starting with a '@'
* instead of a null byte
*/
void AddAbstract(const char *name);
#endif
/**
* Add a socket descriptor that is accepting connections. After this
* has been called, don't call server_socket_open(), because the
* socket is already open.
*
* Throws #std::runtime_error on error.
*/
void AddFD(UniqueSocketDescriptor fd);
void AddFD(UniqueSocketDescriptor fd,
AllocatedSocketAddress &&address) noexcept;
bool IsEmpty() const noexcept {
return sockets.empty();
}
/**
* Throws #std::runtime_error on error.
*/
void Open();
void Close() noexcept;
protected:
virtual void OnAccept(UniqueSocketDescriptor fd,
SocketAddress address, int uid) noexcept = 0;
};
#endif
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