addr.h

/*
 * Copyright (c) 2004,2005 Damien Miller <[email protected]>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* Address handling routines */

#ifndef _ADDR_H
#define _ADDR_H

#include <sys/socket.h>
#include <netinet/in.h>

struct xaddr {
    sa_family_t af;
    union {
        struct in_addr      v4;
        struct in6_addr     v6;
        u_int8_t        addr8[16];
        u_int16_t       addr16[8];
        u_int32_t       addr32[4];
    } xa;           /* 128-bit address */
    u_int32_t   scope_id;   /* iface scope id for v6 */
#define v4  xa.v4
#define v6  xa.v6
#define addr8   xa.addr8
#define addr16  xa.addr16
#define addr32  xa.addr32
};

int addr_unicast_masklen(int af);
int addr_xaddr_to_sa(const struct xaddr *xa, struct sockaddr *sa,
    socklen_t *len, u_int16_t port);
int addr_sa_to_xaddr(struct sockaddr *sa, socklen_t slen, struct xaddr *xa);
int addr_netmask(int af, u_int l, struct xaddr *n);
int addr_hostmask(int af, u_int l, struct xaddr *n);
int addr_invert(struct xaddr *n);
int addr_pton(const char *p, struct xaddr *n);
int addr_sa_pton(const char *h, const char *s, struct sockaddr *sa,
    socklen_t slen);
int addr_pton_cidr(const char *p, struct xaddr *n, u_int *l);
int addr_ntop(const struct xaddr *n, char *p, size_t len);
int addr_and(struct xaddr *dst, const struct xaddr *a, const struct xaddr *b);
int addr_cmp(const struct xaddr *a, const struct xaddr *b);
int addr_is_all0s(const struct xaddr *n);
int addr_host_is_all0s(const struct xaddr *n, u_int masklen);
int addr_netmatch(const struct xaddr *host, const struct xaddr *net,
    u_int masklen);
#endif /* _ADDR_H */