2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char rcsid[] =
35 #include <sys/types.h>
36 #include <sys/ioctl.h>
37 #include <sys/socket.h>
47 #include <netinet/in.h>
48 #include <net/if_var.h> /* for struct ifaddr */
49 #include <netinet/in_var.h>
50 #include <arpa/inet.h>
55 static struct in_aliasreq in_addreq;
56 static struct ifreq in_ridreq;
59 in_status(int s __unused, const struct ifaddrs *ifa)
61 struct sockaddr_in *sin, null_sin;
63 memset(&null_sin, 0, sizeof(null_sin));
65 sin = (struct sockaddr_in *)ifa->ifa_addr;
69 printf("\tinet %s ", inet_ntoa(sin->sin_addr));
71 if (ifa->ifa_flags & IFF_POINTOPOINT) {
72 sin = (struct sockaddr_in *)ifa->ifa_dstaddr;
75 printf("--> %s ", inet_ntoa(sin->sin_addr));
78 sin = (struct sockaddr_in *)ifa->ifa_netmask;
81 printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
83 if (ifa->ifa_flags & IFF_BROADCAST) {
84 sin = (struct sockaddr_in *)ifa->ifa_broadaddr;
85 if (sin != NULL && sin->sin_addr.s_addr != 0)
86 printf("broadcast %s", inet_ntoa(sin->sin_addr));
91 #define SIN(x) ((struct sockaddr_in *) &(x))
92 static struct sockaddr_in *sintab[] = {
93 SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr),
94 SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr)
98 in_getaddr(const char *s, int which)
100 #define MIN(a,b) ((a)<(b)?(a):(b))
101 struct sockaddr_in *sin = sintab[which];
105 sin->sin_len = sizeof(*sin);
107 sin->sin_family = AF_INET;
112 if((p = strrchr(s, '/')) != NULL) {
113 /* address is `name/masklen' */
116 struct sockaddr_in *min = sintab[MASK];
118 ret = sscanf(p+1, "%u", &masklen);
119 if(ret != 1 || (masklen < 0 || masklen > 32)) {
121 errx(1, "%s: bad value", s);
123 min->sin_len = sizeof(*min);
124 min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) &
129 if (inet_aton(s, &sin->sin_addr))
131 if ((hp = gethostbyname(s)) != 0)
132 bcopy(hp->h_addr, (char *)&sin->sin_addr,
133 MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
134 else if ((np = getnetbyname(s)) != 0)
135 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
137 errx(1, "%s: bad value", s);
142 in_status_tunnel(int s)
144 char src[NI_MAXHOST];
145 char dst[NI_MAXHOST];
147 const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
149 memset(&ifr, 0, sizeof(ifr));
150 strncpy(ifr.ifr_name, name, IFNAMSIZ);
152 if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
154 if (sa->sa_family != AF_INET)
156 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
159 if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
161 if (sa->sa_family != AF_INET)
163 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
166 printf("\ttunnel inet %s --> %s\n", src, dst);
170 in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
172 struct in_aliasreq addreq;
174 memset(&addreq, 0, sizeof(addreq));
175 strncpy(addreq.ifra_name, name, IFNAMSIZ);
176 memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
177 memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
179 if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
180 warn("SIOCSIFPHYADDR");
183 static struct afswtch af_inet = {
186 .af_status = in_status,
187 .af_getaddr = in_getaddr,
188 .af_status_tunnel = in_status_tunnel,
189 .af_settunnel = in_set_tunnel,
190 .af_difaddr = SIOCDIFADDR,
191 .af_aifaddr = SIOCAIFADDR,
192 .af_ridreq = &in_ridreq,
193 .af_addreq = &in_addreq,
196 static __constructor void
199 af_register(&af_inet);