1/*
2 * Socket Address handling for dhcpcd
3 * Copyright (c) 2015-2019 Roy Marples <roy@marples.name>
4 * All rights reserved
5
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifndef SA_H
29#define SA_H
30
31#include <sys/socket.h>
32
33union sa_ss {
34 struct sockaddr sa;
35 struct sockaddr_in sin;
36 struct sockaddr_in6 sin6;
37};
38
39#ifdef BSD
40#define HAVE_SA_LEN
41#endif
42
43/* Allow for a sockaddr_dl being printed too. */
44#define INET_MAX_ADDRSTRLEN (20 * 3)
45
46#ifdef INET
47#define satosin(sa) ((struct sockaddr_in *)(void *)(sa))
48#define satocsin(sa) ((const struct sockaddr_in *)(const void *)(sa))
49#endif
50#ifdef INET6
51#define satosin6(sa) ((struct sockaddr_in6 *)(void *)(sa))
52#define satocsin6(sa) ((const struct sockaddr_in6 *)(const void *)(sa))
53#endif
54
55socklen_t sa_addroffset(const struct sockaddr *sa);
56socklen_t sa_addrlen(const struct sockaddr *sa);
57bool sa_is_unspecified(const struct sockaddr *);
58bool sa_is_allones(const struct sockaddr *);
59bool sa_is_loopback(const struct sockaddr *);
60void *sa_toaddr(struct sockaddr *);
61int sa_toprefix(const struct sockaddr *);
62int sa_fromprefix(struct sockaddr *, int);
63const char *sa_addrtop(const struct sockaddr *, char *, socklen_t);
64int sa_cmp(const struct sockaddr *, const struct sockaddr *);
65void sa_in_init(struct sockaddr *, const struct in_addr *);
66void sa_in6_init(struct sockaddr *, const struct in6_addr *);
67
68#endif
69