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      1 /*
      2  * Copyright (c) 2004,2005 Damien Miller <djm (at) 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 
     25 struct 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 
     42 int addr_sa_to_xaddr(struct sockaddr *sa, socklen_t slen, struct xaddr *xa);
     43 int addr_netmask(int af, u_int l, struct xaddr *n);
     44 int addr_pton(const char *p, struct xaddr *n);
     45 int addr_pton_cidr(const char *p, struct xaddr *n, u_int *l);
     46 int addr_ntop(const struct xaddr *n, char *p, size_t len);
     47 int addr_and(struct xaddr *dst, const struct xaddr *a, const struct xaddr *b);
     48 int addr_cmp(const struct xaddr *a, const struct xaddr *b);
     49 int addr_host_to_all1s(struct xaddr *a, u_int masklen);
     50 int addr_netmatch(const struct xaddr *host, const struct xaddr *net,
     51     u_int masklen);
     52 void addr_increment(struct xaddr *a);
     53 #endif /* _ADDR_H */
     54