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129 lines
4.5 KiB
C
129 lines
4.5 KiB
C
/*
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* Socket union header.
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* Copyright (c) 1997 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _ZEBRA_SOCKUNION_H
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#define _ZEBRA_SOCKUNION_H
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#include "privs.h"
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#include "if.h"
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#include <sys/un.h>
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#ifdef __OpenBSD__
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#include <netmpls/mpls.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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union sockunion {
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struct sockaddr sa;
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struct sockaddr_in sin;
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struct sockaddr_in6 sin6;
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struct sockaddr_un sun;
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#ifdef __OpenBSD__
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struct sockaddr_mpls smpls;
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struct sockaddr_rtlabel rtlabel;
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#endif
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};
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enum connect_result { connect_error, connect_success, connect_in_progress };
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/* Default address family. */
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#define AF_INET_UNION AF_INET6
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/* Sockunion address string length. Same as INET6_ADDRSTRLEN. */
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#define SU_ADDRSTRLEN 46
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/* Macro to set link local index to the IPv6 address. For KAME IPv6
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stack. */
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#ifdef KAME
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#define IN6_LINKLOCAL_IFINDEX(a) ((a).s6_addr[2] << 8 | (a).s6_addr[3])
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#define SET_IN6_LINKLOCAL_IFINDEX(a, i) \
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do { \
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(a).s6_addr[2] = ((i) >> 8) & 0xff; \
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(a).s6_addr[3] = (i)&0xff; \
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} while (0)
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#else
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#define IN6_LINKLOCAL_IFINDEX(a)
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#define SET_IN6_LINKLOCAL_IFINDEX(a, i)
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#endif /* KAME */
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#define sockunion_family(X) (X)->sa.sa_family
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#define sockunion2ip(X) (X)->sin.sin_addr.s_addr
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/* Prototypes. */
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extern int str2sockunion(const char *, union sockunion *);
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extern const char *sockunion2str(const union sockunion *, char *, size_t);
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int in6addr_cmp(const struct in6_addr *addr1, const struct in6_addr *addr2);
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extern int sockunion_cmp(const union sockunion *, const union sockunion *);
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extern int sockunion_same(const union sockunion *, const union sockunion *);
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extern unsigned int sockunion_hash(const union sockunion *);
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extern size_t family2addrsize(int family);
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extern size_t sockunion_get_addrlen(const union sockunion *);
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extern const uint8_t *sockunion_get_addr(const union sockunion *);
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extern void sockunion_set(union sockunion *, int family, const uint8_t *addr,
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size_t bytes);
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extern union sockunion *sockunion_str2su(const char *str);
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extern int sockunion_accept(int sock, union sockunion *);
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extern int sockunion_sizeof(const union sockunion *su);
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extern int sockunion_stream_socket(union sockunion *);
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extern int sockopt_reuseaddr(int);
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extern int sockopt_reuseport(int);
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extern int sockopt_v6only(int family, int sock);
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extern int sockunion_bind(int sock, union sockunion *, unsigned short,
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union sockunion *);
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extern int sockopt_ttl(int family, int sock, int ttl);
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extern int sockopt_minttl(int family, int sock, int minttl);
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extern int sockopt_cork(int sock, int onoff);
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extern int sockunion_socket(const union sockunion *su);
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extern const char *inet_sutop(const union sockunion *su, char *str);
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extern enum connect_result sockunion_connect(int fd, const union sockunion *su,
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unsigned short port, ifindex_t);
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extern union sockunion *sockunion_getsockname(int);
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extern union sockunion *sockunion_getpeername(int);
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extern union sockunion *sockunion_dup(const union sockunion *);
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extern void sockunion_free(union sockunion *);
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extern void sockunion_init(union sockunion *);
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extern int sockunion_is_null(const union sockunion *su);
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#ifdef _FRR_ATTRIBUTE_PRINTFRR
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#pragma FRR printfrr_ext "%pSU" (union sockunion *)
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#pragma FRR printfrr_ext "%pSU" (struct sockaddr *)
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#pragma FRR printfrr_ext "%pSU" (struct sockaddr_storage *)
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#pragma FRR printfrr_ext "%pSU" (struct sockaddr_in *)
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#pragma FRR printfrr_ext "%pSU" (struct sockaddr_in6 *)
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#pragma FRR printfrr_ext "%pSU" (struct sockaddr_un *)
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/* AF_INET/PF_INET & co., using "PF" to avoid confusion with AFI/SAFI */
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#pragma FRR printfrr_ext "%dPF" (int)
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/* SOCK_STREAM & co. */
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#pragma FRR printfrr_ext "%dSO" (int)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ZEBRA_SOCKUNION_H */
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