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-rw-r--r--lib/sockunion.h127
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diff --git a/lib/sockunion.h b/lib/sockunion.h
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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"
+#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 */