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/*
* Socket union header.
* Copyright (c) 1997 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_SOCKUNION_H
#define _ZEBRA_SOCKUNION_H
#include "privs.h"
#include "if.h"
#ifdef __OpenBSD__
#include <netmpls/mpls.h>
#endif
union sockunion {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
#ifdef __OpenBSD__
struct sockaddr_mpls smpls;
struct sockaddr_rtlabel rtlabel;
#endif
};
enum connect_result { connect_error, connect_success, connect_in_progress };
/* Default address family. */
#define AF_INET_UNION AF_INET6
/* Sockunion address string length. Same as INET6_ADDRSTRLEN. */
#define SU_ADDRSTRLEN 46
/* Macro to set link local index to the IPv6 address. For KAME IPv6
stack. */
#ifdef KAME
#define IN6_LINKLOCAL_IFINDEX(a) ((a).s6_addr[2] << 8 | (a).s6_addr[3])
#define SET_IN6_LINKLOCAL_IFINDEX(a, i) \
do { \
(a).s6_addr[2] = ((i) >> 8) & 0xff; \
(a).s6_addr[3] = (i)&0xff; \
} while (0)
#else
#define IN6_LINKLOCAL_IFINDEX(a)
#define SET_IN6_LINKLOCAL_IFINDEX(a, i)
#endif /* KAME */
#define sockunion_family(X) (X)->sa.sa_family
#define sockunion2ip(X) (X)->sin.sin_addr.s_addr
/* Prototypes. */
extern int str2sockunion(const char *, union sockunion *);
extern const char *sockunion2str(const union sockunion *, char *, size_t);
extern int sockunion_cmp(const union sockunion *, const union sockunion *);
extern int sockunion_same(const union sockunion *, const union sockunion *);
extern unsigned int sockunion_hash(const union sockunion *);
extern size_t family2addrsize(int family);
extern size_t sockunion_get_addrlen(const union sockunion *);
extern const uint8_t *sockunion_get_addr(const union sockunion *);
extern void sockunion_set(union sockunion *, int family, const uint8_t *addr,
size_t bytes);
extern union sockunion *sockunion_str2su(const char *str);
extern int sockunion_accept(int sock, union sockunion *);
extern int sockunion_stream_socket(union sockunion *);
extern int sockopt_reuseaddr(int);
extern int sockopt_reuseport(int);
extern int sockopt_v6only(int family, int sock);
extern int sockunion_bind(int sock, union sockunion *, unsigned short,
union sockunion *);
extern int sockopt_ttl(int family, int sock, int ttl);
extern int sockopt_minttl(int family, int sock, int minttl);
extern int sockopt_cork(int sock, int onoff);
extern int sockopt_mark_default(int sock, int mark, struct zebra_privs_t *);
extern int sockunion_socket(const union sockunion *su);
extern const char *inet_sutop(const union sockunion *su, char *str);
extern enum connect_result sockunion_connect(int fd, const union sockunion *su,
unsigned short port, ifindex_t);
extern union sockunion *sockunion_getsockname(int);
extern union sockunion *sockunion_getpeername(int);
extern union sockunion *sockunion_dup(const union sockunion *);
extern void sockunion_free(union sockunion *);
extern void sockunion_init(union sockunion *);
#endif /* _ZEBRA_SOCKUNION_H */
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