2 * ntp_net.h - definitions for NTP network stuff
9 #ifdef HAVE_SYS_SOCKET_H
10 #include <sys/socket.h>
15 #ifdef HAVE_NETINET_IN_H
16 #include <netinet/in.h>
18 #ifdef HAVE_NET_IF_VAR_H
19 #include <net/if_var.h>
21 #ifdef HAVE_NETINET_IN_VAR_H
22 #include <netinet/in_var.h>
25 #include "ntp_rfc2553.h"
26 #include "ntp_malloc.h"
30 struct sockaddr_in sa4;
31 struct sockaddr_in6 sa6;
35 * Utilities for manipulating sockaddr_u v4/v6 unions
37 #define SOCK_ADDR4(psau) ((psau)->sa4.sin_addr)
38 #define SOCK_ADDR6(psau) ((psau)->sa6.sin6_addr)
40 #define PSOCK_ADDR4(psau) (&SOCK_ADDR4(psau))
41 #define PSOCK_ADDR6(psau) (&SOCK_ADDR6(psau))
43 #define AF(psau) ((psau)->sa.sa_family)
45 #define IS_IPV4(psau) (AF_INET == AF(psau))
46 #define IS_IPV6(psau) (AF_INET6 == AF(psau))
48 /* sockaddr_u v4 address in network byte order */
49 #define NSRCADR(psau) (SOCK_ADDR4(psau).s_addr)
51 /* sockaddr_u v4 address in host byte order */
52 #define SRCADR(psau) (ntohl(NSRCADR(psau)))
54 /* sockaddr_u v6 address in network byte order */
55 #define NSRCADR6(psau) (SOCK_ADDR6(psau).s6_addr)
57 /* assign sockaddr_u v4 address from host byte order */
58 #define SET_ADDR4(psau, addr4) (NSRCADR(psau) = htonl(addr4))
60 /* assign sockaddr_u v4 address from network byte order */
61 #define SET_ADDR4N(psau, addr4n) (NSRCADR(psau) = (addr4n));
63 /* assign sockaddr_u v6 address from network byte order */
64 #define SET_ADDR6N(psau, s6_addr) \
65 (SOCK_ADDR6(psau) = (s6_addr))
67 /* sockaddr_u v4/v6 port in network byte order */
68 #define NSRCPORT(psau) ((psau)->sa4.sin_port)
70 /* sockaddr_u v4/v6 port in host byte order */
71 #define SRCPORT(psau) (ntohs(NSRCPORT(psau)))
73 /* assign sockaddr_u v4/v6 port from host byte order */
74 #define SET_PORT(psau, port) (NSRCPORT(psau) = htons(port))
76 /* sockaddr_u v6 scope */
77 #define SCOPE_VAR(psau) ((psau)->sa6.sin6_scope_id)
79 #ifdef ISC_PLATFORM_HAVESCOPEID
80 /* v4/v6 scope (always zero for v4) */
81 # define SCOPE(psau) (IS_IPV4(psau) \
85 /* are two v6 sockaddr_u scopes equal? */
86 # define SCOPE_EQ(psau1, psau2) \
87 (SCOPE_VAR(psau1) == SCOPE_VAR(psau2))
89 /* assign scope if supported */
90 # define SET_SCOPE(psau, s) \
93 SCOPE_VAR(psau) = (s); \
95 #else /* ISC_PLATFORM_HAVESCOPEID not defined */
96 # define SCOPE(psau) (0)
97 # define SCOPE_EQ(psau1, psau2) (1)
98 # define SET_SCOPE(psau, s) do { } while (0)
99 #endif /* ISC_PLATFORM_HAVESCOPEID */
101 /* v4/v6 is multicast address */
102 #define IS_MCAST(psau) \
104 ? IN_CLASSD(SRCADR(psau)) \
105 : IN6_IS_ADDR_MULTICAST(PSOCK_ADDR6(psau)))
107 /* v6 is interface ID scope universal, as with MAC-derived addresses */
108 #define IS_IID_UNIV(psau) \
109 (!!(0x02 & NSRCADR6(psau)[8]))
111 #define SIZEOF_INADDR(fam) \
112 ((AF_INET == (fam)) \
113 ? sizeof(struct in_addr) \
114 : sizeof(struct in6_addr))
116 #define SIZEOF_SOCKADDR(fam) \
117 ((AF_INET == (fam)) \
118 ? sizeof(struct sockaddr_in) \
119 : sizeof(struct sockaddr_in6))
121 #define SOCKLEN(psau) \
123 ? sizeof((psau)->sa4) \
124 : sizeof((psau)->sa6))
126 #define ZERO_SOCK(psau) \
129 /* blast a byte value across sockaddr_u v6 address */
130 #define MEMSET_ADDR6(psau, v) \
131 memset((psau)->sa6.sin6_addr.s6_addr, (v), \
132 sizeof((psau)->sa6.sin6_addr.s6_addr))
134 #define SET_ONESMASK(psau) \
137 MEMSET_ADDR6((psau), 0xff); \
139 NSRCADR(psau) = 0xffffffff; \
142 /* zero sockaddr_u, fill in family and all-ones (host) mask */
143 #define SET_HOSTMASK(psau, family) \
146 AF(psau) = (family); \
147 SET_ONESMASK(psau); \
151 * compare two in6_addr returning negative, 0, or positive.
152 * ADDR6_CMP is negative if *pin6A is lower than *pin6B, zero if they
153 * are equal, positive if *pin6A is higher than *pin6B. IN6ADDR_ANY
154 * is the lowest address (128 zero bits).
156 #define ADDR6_CMP(pin6A, pin6B) \
157 memcmp((pin6A)->s6_addr, (pin6B)->s6_addr, \
158 sizeof(pin6A)->s6_addr)
160 /* compare two in6_addr for equality only */
161 #if !defined(SYS_WINNT) || !defined(in_addr6)
162 #define ADDR6_EQ(pin6A, pin6B) \
163 (!ADDR6_CMP(pin6A, pin6B))
165 #define ADDR6_EQ(pin6A, pin6B) \
166 IN6_ADDR_EQUAL(pin6A, pin6B)
169 /* compare a in6_addr with socket address */
170 #define S_ADDR6_EQ(psau, pin6) \
171 ADDR6_EQ(&(psau)->sa6.sin6_addr, pin6)
173 /* are two sockaddr_u's addresses equal? (port excluded) */
174 #define SOCK_EQ(psau1, psau2) \
175 ((AF(psau1) != AF(psau2)) \
178 ? (NSRCADR(psau1) == NSRCADR(psau2)) \
179 : (S_ADDR6_EQ((psau1), PSOCK_ADDR6(psau2)) \
180 && SCOPE_EQ((psau1), (psau2))))
182 /* are two sockaddr_u's addresses and ports equal? */
183 #define ADDR_PORT_EQ(psau1, psau2) \
184 ((NSRCPORT(psau1) != NSRCPORT(psau2) \
186 : SOCK_EQ((psau1), (psau2))))
188 /* is sockaddr_u address unspecified? */
189 #define SOCK_UNSPEC(psau) \
192 : IN6_IS_ADDR_UNSPECIFIED(PSOCK_ADDR6(psau)))
194 /* just how unspecified do you mean? (scope 0/unspec too) */
195 #define SOCK_UNSPEC_S(psau) \
196 (SOCK_UNSPEC(psau) && !SCOPE(psau))
198 /* choose a default net interface (struct interface) for v4 or v6 */
199 #define ANY_INTERFACE_BYFAM(family) \
200 ((AF_INET == family) \
204 /* choose a default interface for addresses' protocol (addr family) */
205 #define ANY_INTERFACE_CHOOSE(psau) \
206 ANY_INTERFACE_BYFAM(AF(psau))
210 * We tell reference clocks from real peers by giving the reference
211 * clocks an address of the form 127.127.t.u, where t is the type and
212 * u is the unit number. We define some of this here since we will need
213 * some sanity checks to make sure this address isn't interpretted as
214 * that of a normal peer.
216 #define REFCLOCK_ADDR 0x7f7f0000 /* 127.127.0.0 */
217 #define REFCLOCK_MASK 0xffff0000 /* 255.255.0.0 */
219 #define ISREFCLOCKADR(srcadr) \
220 (IS_IPV4(srcadr) && \
221 (SRCADR(srcadr) & REFCLOCK_MASK) == REFCLOCK_ADDR)
224 * Macro for checking for invalid addresses. This is really, really
225 * gross, but is needed so no one configures a host on net 127 now that
226 * we're encouraging it the the configuration file.
228 #define LOOPBACKADR 0x7f000001
229 #define LOOPNETMASK 0xff000000
231 #define ISBADADR(srcadr) \
233 && ((SRCADR(srcadr) & LOOPNETMASK) \
234 == (LOOPBACKADR & LOOPNETMASK)) \
235 && SRCADR(srcadr) != LOOPBACKADR)
238 #endif /* NTP_NET_H */