addr.h

   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
  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 */