1/*	$NetBSD: sockmisc.h,v 1.7 2006/09/09 16:22:10 manu Exp $	*/
2
3/* Id: sockmisc.h,v 1.9 2005/10/05 16:55:41 manubsd Exp */
4
5/*
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef _SOCKMISC_H
35#define _SOCKMISC_H
36
37struct netaddr {
38	union {
39		struct sockaddr sa;
40		struct sockaddr_in sin;
41		struct sockaddr_in6 sin6;
42	} sa;
43	unsigned long prefix;
44};
45
46extern const int niflags;
47
48extern int cmpsaddrwop __P((const struct sockaddr *, const struct sockaddr *));
49extern int cmpsaddrwild __P((const struct sockaddr *, const struct sockaddr *));
50extern int cmpsaddrstrict __P((const struct sockaddr *, const struct sockaddr *));
51
52#ifdef ENABLE_NATT
53#define CMPSADDR(saddr1, saddr2) cmpsaddrstrict((saddr1), (saddr2))
54#else
55#define CMPSADDR(saddr1, saddr2) cmpsaddrwop((saddr1), (saddr2))
56#endif
57
58extern struct sockaddr *getlocaladdr __P((struct sockaddr *));
59
60extern int recvfromto __P((int, void *, size_t, int,
61	struct sockaddr *, socklen_t *, struct sockaddr *, unsigned int *));
62extern int sendfromto __P((int, const void *, size_t,
63	struct sockaddr *, struct sockaddr *, int));
64
65extern int setsockopt_bypass __P((int, int));
66
67extern struct sockaddr *newsaddr __P((int));
68extern struct sockaddr *dupsaddr __P((struct sockaddr *));
69extern char *saddr2str __P((const struct sockaddr *));
70extern char *saddrwop2str __P((const struct sockaddr *));
71extern char *saddr2str_fromto __P((const char *format,
72				   const struct sockaddr *saddr,
73				   const struct sockaddr *daddr));
74extern struct sockaddr *str2saddr __P((char *, char *));
75extern void mask_sockaddr __P((struct sockaddr *, const struct sockaddr *,
76	size_t));
77
78/* struct netaddr functions */
79extern char *naddrwop2str __P((const struct netaddr *naddr));
80extern char *naddrwop2str_fromto __P((const char *format, const struct netaddr *saddr,
81				      const struct netaddr *daddr));
82extern int naddr_score(const struct netaddr *naddr, const struct sockaddr *saddr);
83
84/* Some usefull functions for sockaddr port manipulations. */
85extern u_int16_t extract_port __P((const struct sockaddr *addr));
86extern u_int16_t *set_port __P((struct sockaddr *addr, u_int16_t new_port));
87extern u_int16_t *get_port_ptr __P((struct sockaddr *addr));
88
89#endif /* _SOCKMISC_H */
90