aria2/src/inet_aton.c

/* <!-- copyright */
/*
 * aria2 - The high speed download utility
 *
 * Copyright (C) 2006 Tatsuhiro Tsujikawa
 *
 * 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
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.
 */
/* copyright --> */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif // HAVE_CONFIG_H

#ifdef __MINGW32__
# define _WIN32_WINNT 0x501
# include <winsock2.h>
# undef ERROR
# include <ws2tcpip.h>
#endif // __MINGW32__

#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif // HAVE_NETDB_H
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif // HAVE_SYS_SOCKET_H
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif // HAVE_NETINET_IN_H
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif // HAVE_ARPA_INET_H

#include <string.h>

int inet_aton(const char *cp, struct in_addr *inp) {
	unsigned long res = inet_addr(cp);
	if (res == INADDR_NONE && strcmp(cp, "255.255.255.255"))
		return 0;
	if (inp)
		inp->s_addr = res;
	return 1;
}