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-rw-r--r--include/ntp_net.h241
1 files changed, 241 insertions, 0 deletions
diff --git a/include/ntp_net.h b/include/ntp_net.h
new file mode 100644
index 000000000000..d417cea4d3d7
--- /dev/null
+++ b/include/ntp_net.h
@@ -0,0 +1,241 @@
+/*
+ * ntp_net.h - definitions for NTP network stuff
+ */
+
+#ifndef NTP_NET_H
+#define NTP_NET_H
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NET_IF_H
+#include <net/if.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_NET_IF_VAR_H
+#include <net/if_var.h>
+#endif
+#ifdef HAVE_NETINET_IN_VAR_H
+#include <netinet/in_var.h>
+#endif
+
+#include "ntp_rfc2553.h"
+
+typedef union {
+ struct sockaddr sa;
+ struct sockaddr_in sa4;
+ struct sockaddr_in6 sa6;
+} sockaddr_u;
+
+/*
+ * Utilities for manipulating sockaddr_u v4/v6 unions
+ */
+#define SOCK_ADDR4(psau) ((psau)->sa4.sin_addr)
+#define SOCK_ADDR6(psau) ((psau)->sa6.sin6_addr)
+
+#define PSOCK_ADDR4(psau) (&SOCK_ADDR4(psau))
+#define PSOCK_ADDR6(psau) (&SOCK_ADDR6(psau))
+
+#define AF(psau) ((psau)->sa.sa_family)
+
+#define IS_IPV4(psau) (AF_INET == AF(psau))
+#define IS_IPV6(psau) (AF_INET6 == AF(psau))
+
+/* sockaddr_u v4 address in network byte order */
+#define NSRCADR(psau) (SOCK_ADDR4(psau).s_addr)
+
+/* sockaddr_u v4 address in host byte order */
+#define SRCADR(psau) (ntohl(NSRCADR(psau)))
+
+/* sockaddr_u v6 address in network byte order */
+#define NSRCADR6(psau) (SOCK_ADDR6(psau).s6_addr)
+
+/* assign sockaddr_u v4 address from host byte order */
+#define SET_ADDR4(psau, addr4) (NSRCADR(psau) = htonl(addr4))
+
+/* assign sockaddr_u v4 address from network byte order */
+#define SET_ADDR4N(psau, addr4n) (NSRCADR(psau) = (addr4n));
+
+/* assign sockaddr_u v6 address from network byte order */
+#define SET_ADDR6N(psau, s6_addr) \
+ (SOCK_ADDR6(psau) = (s6_addr))
+
+/* sockaddr_u v4/v6 port in network byte order */
+#define NSRCPORT(psau) ((psau)->sa4.sin_port)
+
+/* sockaddr_u v4/v6 port in host byte order */
+#define SRCPORT(psau) (ntohs(NSRCPORT(psau)))
+
+/* assign sockaddr_u v4/v6 port from host byte order */
+#define SET_PORT(psau, port) (NSRCPORT(psau) = htons(port))
+
+/* sockaddr_u v6 scope */
+#define SCOPE_VAR(psau) ((psau)->sa6.sin6_scope_id)
+
+#ifdef ISC_PLATFORM_HAVESCOPEID
+/* v4/v6 scope (always zero for v4) */
+# define SCOPE(psau) (IS_IPV4(psau) \
+ ? 0 \
+ : SCOPE_VAR(psau))
+
+/* are two v6 sockaddr_u scopes equal? */
+# define SCOPE_EQ(psau1, psau2) \
+ (SCOPE_VAR(psau1) == SCOPE_VAR(psau2))
+
+/* assign scope if supported */
+# define SET_SCOPE(psau, s) \
+ do \
+ if (IS_IPV6(psau)) \
+ SCOPE_VAR(psau) = (s); \
+ while (0)
+#else /* ISC_PLATFORM_HAVESCOPEID not defined */
+# define SCOPE(psau) (0)
+# define SCOPE_EQ(psau1, psau2) (1)
+# define SET_SCOPE(psau, s) do { } while (0)
+#endif /* ISC_PLATFORM_HAVESCOPEID */
+
+/* v4/v6 is multicast address */
+#define IS_MCAST(psau) \
+ (IS_IPV4(psau) \
+ ? IN_CLASSD(SRCADR(psau)) \
+ : IN6_IS_ADDR_MULTICAST(PSOCK_ADDR6(psau)))
+
+/* v6 is interface ID scope universal, as with MAC-derived addresses */
+#define IS_IID_UNIV(psau) \
+ (!!(0x02 & NSRCADR6(psau)[8]))
+
+#define SIZEOF_INADDR(fam) \
+ ((AF_INET == (fam)) \
+ ? sizeof(struct in_addr) \
+ : sizeof(struct in6_addr))
+
+#define SIZEOF_SOCKADDR(fam) \
+ ((AF_INET == (fam)) \
+ ? sizeof(struct sockaddr_in) \
+ : sizeof(struct sockaddr_in6))
+
+#define SOCKLEN(psau) \
+ (IS_IPV4(psau) \
+ ? sizeof((psau)->sa4) \
+ : sizeof((psau)->sa6))
+
+#define ZERO_SOCK(psau) \
+ memset((psau), 0, sizeof(*(psau)))
+
+/* blast a byte value across sockaddr_u v6 address */
+#define MEMSET_ADDR6(psau, v) \
+ memset((psau)->sa6.sin6_addr.s6_addr, (v), \
+ sizeof((psau)->sa6.sin6_addr.s6_addr))
+
+#define SET_ONESMASK(psau) \
+ do { \
+ if (IS_IPV6(psau)) \
+ MEMSET_ADDR6((psau), 0xff); \
+ else \
+ NSRCADR(psau) = 0xffffffff; \
+ } while(0)
+
+/* zero sockaddr_u, fill in family and all-ones (host) mask */
+#define SET_HOSTMASK(psau, family) \
+ do { \
+ ZERO_SOCK(psau); \
+ AF(psau) = (family); \
+ SET_ONESMASK(psau); \
+ } while (0)
+
+/*
+ * compare two in6_addr returning negative, 0, or positive.
+ * ADDR6_CMP is negative if *pin6A is lower than *pin6B, zero if they
+ * are equal, positive if *pin6A is higher than *pin6B. IN6ADDR_ANY
+ * is the lowest address (128 zero bits).
+ */
+#define ADDR6_CMP(pin6A, pin6B) \
+ memcmp((pin6A)->s6_addr, (pin6B)->s6_addr, \
+ sizeof(pin6A)->s6_addr)
+
+/* compare two in6_addr for equality only */
+#if !defined(SYS_WINNT) || !defined(in_addr6)
+#define ADDR6_EQ(pin6A, pin6B) \
+ (!ADDR6_CMP(pin6A, pin6B))
+#else
+#define ADDR6_EQ(pin6A, pin6B) \
+ IN6_ADDR_EQUAL(pin6A, pin6B)
+#endif
+
+/* compare a in6_addr with socket address */
+#define S_ADDR6_EQ(psau, pin6) \
+ ADDR6_EQ(&(psau)->sa6.sin6_addr, pin6)
+
+/* are two sockaddr_u's addresses equal? (port excluded) */
+#define SOCK_EQ(psau1, psau2) \
+ ((AF(psau1) != AF(psau2)) \
+ ? 0 \
+ : IS_IPV4(psau1) \
+ ? (NSRCADR(psau1) == NSRCADR(psau2)) \
+ : (S_ADDR6_EQ((psau1), PSOCK_ADDR6(psau2)) \
+ && SCOPE_EQ((psau1), (psau2))))
+
+/* are two sockaddr_u's addresses and ports equal? */
+#define ADDR_PORT_EQ(psau1, psau2) \
+ ((NSRCPORT(psau1) != NSRCPORT(psau2) \
+ ? 0 \
+ : SOCK_EQ((psau1), (psau2))))
+
+/* is sockaddr_u address unspecified? */
+#define SOCK_UNSPEC(psau) \
+ (IS_IPV4(psau) \
+ ? !NSRCADR(psau) \
+ : IN6_IS_ADDR_UNSPECIFIED(PSOCK_ADDR6(psau)))
+
+/* just how unspecified do you mean? (scope 0/unspec too) */
+#define SOCK_UNSPEC_S(psau) \
+ (SOCK_UNSPEC(psau) && !SCOPE(psau))
+
+/* choose a default net interface (struct interface) for v4 or v6 */
+#define ANY_INTERFACE_BYFAM(family) \
+ ((AF_INET == family) \
+ ? any_interface \
+ : any6_interface)
+
+/* choose a default interface for addresses' protocol (addr family) */
+#define ANY_INTERFACE_CHOOSE(psau) \
+ ANY_INTERFACE_BYFAM(AF(psau))
+
+
+/*
+ * We tell reference clocks from real peers by giving the reference
+ * clocks an address of the form 127.127.t.u, where t is the type and
+ * u is the unit number. We define some of this here since we will need
+ * some sanity checks to make sure this address isn't interpretted as
+ * that of a normal peer.
+ */
+#define REFCLOCK_ADDR 0x7f7f0000 /* 127.127.0.0 */
+#define REFCLOCK_MASK 0xffff0000 /* 255.255.0.0 */
+
+#ifdef REFCLOCK
+#define ISREFCLOCKADR(srcadr) \
+ (IS_IPV4(srcadr) && \
+ (SRCADR(srcadr) & REFCLOCK_MASK) == REFCLOCK_ADDR)
+#else
+#define ISREFCLOCKADR(srcadr) (0)
+#endif
+
+/*
+ * Macro for checking for invalid addresses. This is really, really
+ * gross, but is needed so no one configures a host on net 127 now that
+ * we're encouraging it the the configuration file.
+ */
+#define LOOPBACKADR 0x7f000001
+#define LOOPNETMASK 0xff000000
+
+#define ISBADADR(srcadr) \
+ (IS_IPV4(srcadr) \
+ && ((SRCADR(srcadr) & LOOPNETMASK) \
+ == (LOOPBACKADR & LOOPNETMASK)) \
+ && SRCADR(srcadr) != LOOPBACKADR)
+
+
+#endif /* NTP_NET_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-24 10:02:31 +0000