1/*
2 * Copyright (c) 2004,2005 Damien Miller <djm@mindrot.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17/* Address handling routines */
18
19#ifndef _ADDR_H
20#define _ADDR_H
21
22#include <sys/socket.h>
23#include <netinet/in.h>
24
25struct xaddr {
26	sa_family_t	af;
27	union {
28		struct in_addr		v4;
29		struct in6_addr		v6;
30		u_int8_t		addr8[16];
31		u_int16_t		addr16[8];
32		u_int32_t		addr32[4];
33	} xa;		    /* 128-bit address */
34	u_int32_t	scope_id;	/* iface scope id for v6 */
35#define v4	xa.v4
36#define v6	xa.v6
37#define addr8	xa.addr8
38#define addr16	xa.addr16
39#define addr32	xa.addr32
40};
41
42int addr_unicast_masklen(int af);
43int addr_xaddr_to_sa(const struct xaddr *xa, struct sockaddr *sa,
44    socklen_t *len, u_int16_t port);
45int addr_sa_to_xaddr(struct sockaddr *sa, socklen_t slen, struct xaddr *xa);
46int addr_netmask(int af, u_int l, struct xaddr *n);
47int addr_hostmask(int af, u_int l, struct xaddr *n);
48int addr_invert(struct xaddr *n);
49int addr_pton(const char *p, struct xaddr *n);
50int addr_sa_pton(const char *h, const char *s, struct sockaddr *sa,
51    socklen_t slen);
52int addr_pton_cidr(const char *p, struct xaddr *n, u_int *l);
53int addr_ntop(const struct xaddr *n, char *p, size_t len);
54int addr_and(struct xaddr *dst, const struct xaddr *a, const struct xaddr *b);
55int addr_or(struct xaddr *dst, const struct xaddr *a, const struct xaddr *b);
56int addr_cmp(const struct xaddr *a, const struct xaddr *b);
57int addr_is_all0s(const struct xaddr *n);
58int addr_host_is_all0s(const struct xaddr *n, u_int masklen);
59int addr_host_to_all0s(struct xaddr *a, u_int masklen);
60int addr_host_to_all1s(struct xaddr *a, u_int masklen);
61int addr_netmatch(const struct xaddr *host, const struct xaddr *net,
62    u_int masklen);
63void addr_increment(struct xaddr *a);
64#endif /* _ADDR_H */
65