18d36e1dfSRoy Marples /* SPDX-License-Identifier: BSD-2-Clause */ 27827cba2SAaron LI /* 37827cba2SAaron LI * Socket Address handling for dhcpcd 480aa9461SRoy Marples * Copyright (c) 2015-2023 Roy Marples <roy@marples.name> 57827cba2SAaron LI * All rights reserved 67827cba2SAaron LI 77827cba2SAaron LI * Redistribution and use in source and binary forms, with or without 87827cba2SAaron LI * modification, are permitted provided that the following conditions 97827cba2SAaron LI * are met: 107827cba2SAaron LI * 1. Redistributions of source code must retain the above copyright 117827cba2SAaron LI * notice, this list of conditions and the following disclaimer. 127827cba2SAaron LI * 2. Redistributions in binary form must reproduce the above copyright 137827cba2SAaron LI * notice, this list of conditions and the following disclaimer in the 147827cba2SAaron LI * documentation and/or other materials provided with the distribution. 157827cba2SAaron LI * 167827cba2SAaron LI * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 177827cba2SAaron LI * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 187827cba2SAaron LI * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 197827cba2SAaron LI * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 207827cba2SAaron LI * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 217827cba2SAaron LI * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 227827cba2SAaron LI * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 237827cba2SAaron LI * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 247827cba2SAaron LI * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 257827cba2SAaron LI * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 267827cba2SAaron LI * SUCH DAMAGE. 277827cba2SAaron LI */ 287827cba2SAaron LI 297827cba2SAaron LI #ifndef SA_H 307827cba2SAaron LI #define SA_H 317827cba2SAaron LI 327827cba2SAaron LI #include <sys/socket.h> 338d36e1dfSRoy Marples #include <netinet/in.h> 347827cba2SAaron LI 357827cba2SAaron LI union sa_ss { 367827cba2SAaron LI struct sockaddr sa; 377827cba2SAaron LI struct sockaddr_in sin; 387827cba2SAaron LI struct sockaddr_in6 sin6; 397827cba2SAaron LI }; 407827cba2SAaron LI 417827cba2SAaron LI #ifdef BSD 427827cba2SAaron LI #define HAVE_SA_LEN 437827cba2SAaron LI #endif 447827cba2SAaron LI 457827cba2SAaron LI /* Allow for a sockaddr_dl being printed too. */ 467827cba2SAaron LI #define INET_MAX_ADDRSTRLEN (20 * 3) 477827cba2SAaron LI 487827cba2SAaron LI #ifdef INET 497827cba2SAaron LI #define satosin(sa) ((struct sockaddr_in *)(void *)(sa)) 507827cba2SAaron LI #define satocsin(sa) ((const struct sockaddr_in *)(const void *)(sa)) 517827cba2SAaron LI #endif 527827cba2SAaron LI #ifdef INET6 537827cba2SAaron LI #define satosin6(sa) ((struct sockaddr_in6 *)(void *)(sa)) 547827cba2SAaron LI #define satocsin6(sa) ((const struct sockaddr_in6 *)(const void *)(sa)) 557827cba2SAaron LI #endif 567827cba2SAaron LI 577827cba2SAaron LI socklen_t sa_addroffset(const struct sockaddr *sa); 587827cba2SAaron LI socklen_t sa_addrlen(const struct sockaddr *sa); 598d36e1dfSRoy Marples #ifdef HAVE_SA_LEN 608d36e1dfSRoy Marples #define sa_len(sa) ((sa)->sa_len) 618d36e1dfSRoy Marples #else 628d36e1dfSRoy Marples socklen_t sa_len(const struct sockaddr *sa); 638d36e1dfSRoy Marples #endif 647827cba2SAaron LI bool sa_is_unspecified(const struct sockaddr *); 657827cba2SAaron LI bool sa_is_allones(const struct sockaddr *); 667827cba2SAaron LI bool sa_is_loopback(const struct sockaddr *); 677827cba2SAaron LI void *sa_toaddr(struct sockaddr *); 687827cba2SAaron LI int sa_toprefix(const struct sockaddr *); 697827cba2SAaron LI int sa_fromprefix(struct sockaddr *, int); 70*54175cefSRoy Marples void in6_addr_fromprefix(struct in6_addr *, int); 717827cba2SAaron LI const char *sa_addrtop(const struct sockaddr *, char *, socklen_t); 727827cba2SAaron LI int sa_cmp(const struct sockaddr *, const struct sockaddr *); 737827cba2SAaron LI void sa_in_init(struct sockaddr *, const struct in_addr *); 747827cba2SAaron LI void sa_in6_init(struct sockaddr *, const struct in6_addr *); 757827cba2SAaron LI 767827cba2SAaron LI #endif 77