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_unicast_masklen(int af); 43 int addr_xaddr_to_sa(const struct xaddr *xa, struct sockaddr *sa, 44 socklen_t *len, u_int16_t port); 45 int addr_sa_to_xaddr(struct sockaddr *sa, socklen_t slen, struct xaddr *xa); 46 int addr_netmask(int af, u_int l, struct xaddr *n); 47 int addr_hostmask(int af, u_int l, struct xaddr *n); 48 int addr_invert(struct xaddr *n); 49 int addr_pton(const char *p, struct xaddr *n); 50 int addr_sa_pton(const char *h, const char *s, struct sockaddr *sa, 51 socklen_t slen); 52 int addr_pton_cidr(const char *p, struct xaddr *n, u_int *l); 53 int addr_ntop(const struct xaddr *n, char *p, size_t len); 54 int addr_and(struct xaddr *dst, const struct xaddr *a, const struct xaddr *b); 55 int addr_or(struct xaddr *dst, const struct xaddr *a, const struct xaddr *b); 56 int addr_cmp(const struct xaddr *a, const struct xaddr *b); 57 int addr_is_all0s(const struct xaddr *n); 58 int addr_host_is_all0s(const struct xaddr *n, u_int masklen); 59 int addr_host_to_all0s(struct xaddr *a, u_int masklen); 60 int addr_host_to_all1s(struct xaddr *a, u_int masklen); 61 int addr_netmatch(const struct xaddr *host, const struct xaddr *net, 62 u_int masklen); 63 void addr_increment(struct xaddr *a); 64 #endif /* _ADDR_H */ 65