2 * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001 Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: net.h,v 1.31.2.4 2004/03/09 06:12:14 marka Exp $ */
28 * Basic Networking Types
30 * This module is responsible for defining the following basic networking
41 * It ensures that the AF_ and PF_ macros are defined.
43 * It declares ntoh[sl]() and hton[sl]().
45 * It declares inet_aton(), inet_ntop(), and inet_pton().
47 * It ensures that INADDR_LOOPBACK, INADDR_ANY, IN6ADDR_ANY_INIT,
48 * in6addr_any, and in6addr_loopback are available.
50 * It ensures that IN_MULTICAST() is available to check for multicast
57 * No anticipated impact.
63 * No anticipated impact.
73 #include <isc/platform.h>
75 #include <sys/types.h>
76 #include <sys/socket.h> /* Contractual promise. */
78 #include <netinet/in.h> /* Contractual promise. */
79 #include <arpa/inet.h> /* Contractual promise. */
80 #ifdef ISC_PLATFORM_NEEDNETINETIN6H
81 #include <netinet/in6.h> /* Required on UnixWare. */
83 #ifdef ISC_PLATFORM_NEEDNETINET6IN6H
84 #include <netinet6/in6.h> /* Required on BSD/OS for in6_pktinfo. */
87 #ifndef ISC_PLATFORM_HAVEIPV6
88 #include <isc/ipv6.h> /* Contractual promise. */
92 #include <isc/types.h>
94 #ifdef ISC_PLATFORM_HAVEINADDR6
95 #define in6_addr in_addr6 /* Required for pre RFC2133 implementations. */
98 #ifdef ISC_PLATFORM_HAVEIPV6
100 * Required for some pre RFC2133 implementations.
101 * IN6ADDR_ANY_INIT and IN6ADDR_LOOPBACK_INIT were added in
102 * draft-ietf-ipngwg-bsd-api-04.txt or draft-ietf-ipngwg-bsd-api-05.txt.
103 * If 's6_addr' is defined then assume that there is a union and three
104 * levels otherwise assume two levels required.
106 #ifndef IN6ADDR_ANY_INIT
108 #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
110 #define IN6ADDR_ANY_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } }
114 #ifndef IN6ADDR_LOOPBACK_INIT
116 #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
118 #define IN6ADDR_LOOPBACK_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } }
122 #ifndef IN6_IS_ADDR_V4MAPPED
123 #define IN6_IS_ADDR_V4MAPPED(x) \
124 (memcmp((x)->s6_addr, in6addr_any.s6_addr, 10) == 0 && \
125 (x)->s6_addr[10] == 0xff && (x)->s6_addr[11] == 0xff)
128 #ifndef IN6_IS_ADDR_V4COMPAT
129 #define IN6_IS_ADDR_V4COMPAT(x) \
130 (memcmp((x)->s6_addr, in6addr_any.s6_addr, 12) == 0 && \
131 ((x)->s6_addr[12] != 0 || (x)->s6_addr[13] != 0 || \
132 (x)->s6_addr[14] != 0 || \
133 ((x)->s6_addr[15] != 0 && (x)->s6_addr[15] != 1)))
136 #ifndef IN6_IS_ADDR_MULTICAST
137 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
140 #ifndef IN6_IS_ADDR_LOOPBACK
141 #define IN6_IS_ADDR_LOOPBACK(x) \
142 (memcmp((x)->s6_addr, in6addr_loopback.s6_addr, 16) == 0)
151 #define PF_INET6 AF_INET6
154 #ifndef INADDR_LOOPBACK
155 #define INADDR_LOOPBACK 0x7f000001UL
158 #ifndef ISC_PLATFORM_HAVEIN6PKTINFO
160 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
161 unsigned int ipi6_ifindex; /* send/recv interface index */
166 * Cope with a missing in6addr_any and in6addr_loopback.
168 #if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRANY)
169 extern const struct in6_addr isc_net_in6addrany;
170 #define in6addr_any isc_net_in6addrany
173 #if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRLOOPBACK)
174 extern const struct in6_addr isc_net_in6addrloop;
175 #define in6addr_loopback isc_net_in6addrloop
179 * Fix UnixWare 7.1.1's broken IN6_IS_ADDR_* definitions.
181 #ifdef ISC_PLATFORM_FIXIN6ISADDR
182 #undef IN6_IS_ADDR_GEOGRAPHIC
183 #define IN6_IS_ADDR_GEOGRAPHIC(a) (((a)->S6_un.S6_l[0] & 0xE0) == 0x80)
184 #undef IN6_IS_ADDR_IPX
185 #define IN6_IS_ADDR_IPX(a) (((a)->S6_un.S6_l[0] & 0xFE) == 0x04)
186 #undef IN6_IS_ADDR_LINKLOCAL
187 #define IN6_IS_ADDR_LINKLOCAL(a) (((a)->S6_un.S6_l[0] & 0xC0FF) == 0x80FE)
188 #undef IN6_IS_ADDR_MULTICAST
189 #define IN6_IS_ADDR_MULTICAST(a) (((a)->S6_un.S6_l[0] & 0xFF) == 0xFF)
190 #undef IN6_IS_ADDR_NSAP
191 #define IN6_IS_ADDR_NSAP(a) (((a)->S6_un.S6_l[0] & 0xFE) == 0x02)
192 #undef IN6_IS_ADDR_PROVIDER
193 #define IN6_IS_ADDR_PROVIDER(a) (((a)->S6_un.S6_l[0] & 0xE0) == 0x40)
194 #undef IN6_IS_ADDR_SITELOCAL
195 #define IN6_IS_ADDR_SITELOCAL(a) (((a)->S6_un.S6_l[0] & 0xC0FF) == 0xC0FE)
196 #endif /* ISC_PLATFORM_FIXIN6ISADDR */
199 * Ensure type in_port_t is defined.
201 #ifdef ISC_PLATFORM_NEEDPORTT
202 typedef isc_uint16_t in_port_t;
206 * If this system does not have MSG_TRUNC (as returned from recvmsg())
207 * ISC_PLATFORM_RECVOVERFLOW will be defined. This will enable the MSG_TRUNC
208 * faking code in socket.c.
211 #define ISC_PLATFORM_RECVOVERFLOW
214 #define ISC__IPADDR(x) ((isc_uint32_t)htonl((isc_uint32_t)(x)))
216 #define ISC_IPADDR_ISMULTICAST(i) \
217 (((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
218 == ISC__IPADDR(0xe0000000))
220 #define ISC_IPADDR_ISEXPERIMENTAL(i) \
221 (((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
222 == ISC__IPADDR(0xf0000000))
231 isc_net_probeipv4(void);
233 * Check if the system's kernel supports IPv4.
237 * ISC_R_SUCCESS IPv4 is supported.
238 * ISC_R_NOTFOUND IPv4 is not supported.
243 isc_net_probeipv6(void);
245 * Check if the system's kernel supports IPv6.
249 * ISC_R_SUCCESS IPv6 is supported.
250 * ISC_R_NOTFOUND IPv6 is not supported.
254 #ifdef ISC_PLATFORM_NEEDNTOP
256 isc_net_ntop(int af, const void *src, char *dst, size_t size);
257 #define inet_ntop isc_net_ntop
260 #ifdef ISC_PLATFORM_NEEDPTON
262 isc_net_pton(int af, const char *src, void *dst);
264 #define inet_pton isc_net_pton
267 #ifdef ISC_PLATFORM_NEEDATON
269 isc_net_aton(const char *cp, struct in_addr *addr);
270 #define inet_aton isc_net_aton
275 #endif /* ISC_NET_H */