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Diffstat (limited to '')
| -rw-r--r-- | lib/sockunion.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/lib/sockunion.h b/lib/sockunion.h new file mode 100644 index 0000000..e507255 --- /dev/null +++ b/lib/sockunion.h @@ -0,0 +1,112 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Socket union header. + * Copyright (c) 1997 Kunihiro Ishiguro + */ + +#ifndef _ZEBRA_SOCKUNION_H +#define _ZEBRA_SOCKUNION_H + +#include "privs.h" +#include "if.h" +#include <sys/un.h> +#ifdef __OpenBSD__ +#include <netmpls/mpls.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +union sockunion { + struct sockaddr sa; + struct sockaddr_in sin; + struct sockaddr_in6 sin6; + struct sockaddr_un sun; +#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); +int in6addr_cmp(const struct in6_addr *addr1, const struct in6_addr *addr2); +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_sizeof(const union sockunion *su); +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 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 *); +extern int sockunion_is_null(const union sockunion *su); + +#ifdef _FRR_ATTRIBUTE_PRINTFRR +#pragma FRR printfrr_ext "%pSU" (union sockunion *) +#pragma FRR printfrr_ext "%pSU" (struct sockaddr *) +#pragma FRR printfrr_ext "%pSU" (struct sockaddr_storage *) +#pragma FRR printfrr_ext "%pSU" (struct sockaddr_in *) +#pragma FRR printfrr_ext "%pSU" (struct sockaddr_in6 *) +#pragma FRR printfrr_ext "%pSU" (struct sockaddr_un *) + +/* AF_INET/PF_INET & co., using "PF" to avoid confusion with AFI/SAFI */ +#pragma FRR printfrr_ext "%dPF" (int) +/* SOCK_STREAM & co. */ +#pragma FRR printfrr_ext "%dSO" (int) +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* _ZEBRA_SOCKUNION_H */ |