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 */