1/* 2 * Socket union header. 3 * Copyright (c) 1997 Kunihiro Ishiguro 4 * 5 * This file is part of GNU Zebra. 6 * 7 * GNU Zebra is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2, or (at your option) any 10 * later version. 11 * 12 * GNU Zebra is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with GNU Zebra; see the file COPYING. If not, write to the Free 19 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 20 * 02111-1307, USA. 21 */ 22 23#ifndef _ZEBRA_SOCKUNION_H 24#define _ZEBRA_SOCKUNION_H 25 26#if 0 27union sockunion { 28 struct sockinet { 29 u_char si_len; 30 u_char si_family; 31 u_short si_port; 32 } su_si; 33 struct sockaddr_in su_sin; 34 struct sockaddr_in6 su_sin6; 35}; 36#define su_len su_si.si_len 37#define su_family su_si.si_family 38#define su_port su_si.si_port 39#endif /* 0 */ 40 41union sockunion 42{ 43 struct sockaddr sa; 44 struct sockaddr_in sin; 45#ifdef HAVE_IPV6 46 struct sockaddr_in6 sin6; 47#endif /* HAVE_IPV6 */ 48}; 49 50enum connect_result 51{ 52 connect_error, 53 connect_success, 54 connect_in_progress 55}; 56 57/* Default address family. */ 58#ifdef HAVE_IPV6 59#define AF_INET_UNION AF_INET6 60#else 61#define AF_INET_UNION AF_INET 62#endif 63 64/* Sockunion address string length. Same as INET6_ADDRSTRLEN. */ 65#define SU_ADDRSTRLEN 46 66 67/* Macro to set link local index to the IPv6 address. For KAME IPv6 68 stack. */ 69#ifdef KAME 70#define IN6_LINKLOCAL_IFINDEX(a) ((a).s6_addr[2] << 8 | (a).s6_addr[3]) 71#define SET_IN6_LINKLOCAL_IFINDEX(a, i) \ 72 do { \ 73 (a).s6_addr[2] = ((i) >> 8) & 0xff; \ 74 (a).s6_addr[3] = (i) & 0xff; \ 75 } while (0) 76#else 77#define IN6_LINKLOCAL_IFINDEX(a) 78#define SET_IN6_LINKLOCAL_IFINDEX(a, i) 79#endif /* KAME */ 80 81#define sockunion_family(X) (X)->sa.sa_family 82 83#define sockunion2ip(X) (X)->sin.sin_addr.s_addr 84 85/* Prototypes. */ 86extern int str2sockunion (const char *, union sockunion *); 87extern const char *sockunion2str (union sockunion *, char *, size_t); 88extern int sockunion_cmp (union sockunion *, union sockunion *); 89extern int sockunion_same (union sockunion *, union sockunion *); 90 91extern union sockunion *sockunion_str2su (const char *str); 92extern int sockunion_accept (int sock, union sockunion *); 93extern int sockunion_stream_socket (union sockunion *); 94extern int sockopt_reuseaddr (int); 95extern int sockopt_reuseport (int); 96extern int sockopt_v6only (int family, int sock); 97extern int sockunion_bind (int sock, union sockunion *, 98 unsigned short, union sockunion *); 99extern int sockopt_ttl (int family, int sock, int ttl); 100extern int sockopt_minttl (int family, int sock, int minttl); 101extern int sockopt_cork (int sock, int onoff); 102extern int sockunion_socket (union sockunion *su); 103extern const char *inet_sutop (union sockunion *su, char *str); 104extern enum connect_result sockunion_connect (int fd, union sockunion *su, 105 unsigned short port, 106 unsigned int); 107extern union sockunion *sockunion_getsockname (int); 108extern union sockunion *sockunion_getpeername (int); 109extern union sockunion *sockunion_dup (union sockunion *); 110extern void sockunion_free (union sockunion *); 111 112#ifndef HAVE_INET_NTOP 113extern const char * inet_ntop (int family, const void *addrptr, 114 char *strptr, size_t len); 115#endif /* HAVE_INET_NTOP */ 116 117#ifndef HAVE_INET_PTON 118extern int inet_pton (int family, const char *strptr, void *addrptr); 119#endif /* HAVE_INET_PTON */ 120 121#ifndef HAVE_INET_ATON 122extern int inet_aton (const char *cp, struct in_addr *inaddr); 123#endif 124 125#endif /* _ZEBRA_SOCKUNION_H */ 126