/* $Id: ifacewatcher.h,v 1.5 2025/04/03 21:11:35 nanard Exp $ */
/* MiniUPnP project
 * http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
 * (c) 2006-2025 Thomas Bernard
 */
/*! \file ifacewatcher.h
 * \brief network interface watcher
 *
 * This file implements dynamic serving of new network interfaces
 * which weren't available during daemon start. It also takes care
 * of interfaces which become unavailable.
 */
/* Copyright (c) 2011, Alexey Osipov <simba@lerlan.ru>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *    * Redistributions of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright notice,
 *      this list of conditions and the following disclaimer in the documentation
 *      and/or other materials provided with the distribution.
 *    * The name of the author may not be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE. */

#ifndef IFACEWATCHER_H_INCLUDED
#define IFACEWATCHER_H_INCLUDED

#include "config.h"

#ifdef USE_IFACEWATCHER
/*! \brief open the socket for watching network interfaces
 * \return a file descriptor or -1 on error
 */
int OpenAndConfInterfaceWatchSocket(void);
/*! \brief process available data
 * \param[in] s socket opened with OpenAndConfInterfaceWatchSocket()
 */
void ProcessInterfaceWatchNotify(int s);
#endif

#endif
