2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 static const char rcsid[] =
37 #include <sys/param.h>
38 #include <sys/ioctl.h>
39 #include <sys/socket.h>
50 #include <netinet/in.h>
51 #include <netinet/in_var.h>
52 #include <arpa/inet.h>
57 static struct in_aliasreq in_addreq;
58 static struct ifreq in_ridreq;
59 static char addr_buf[NI_MAXHOST]; /*for getnameinfo()*/
60 extern char *f_inet, *f_addr;
63 in_status(int s __unused, const struct ifaddrs *ifa)
65 struct sockaddr_in *sin, null_sin;
68 memset(&null_sin, 0, sizeof(null_sin));
70 sin = (struct sockaddr_in *)ifa->ifa_addr;
74 if (f_addr != NULL && strcmp(f_addr, "fqdn") == 0)
76 else if (f_addr != NULL && strcmp(f_addr, "host") == 0)
79 n_flags = NI_NUMERICHOST;
81 error = getnameinfo((struct sockaddr *)sin, sin->sin_len, addr_buf,
82 sizeof(addr_buf), NULL, 0, n_flags);
85 inet_ntop(AF_INET, &sin->sin_addr, addr_buf, sizeof(addr_buf));
87 printf("\tinet %s", addr_buf);
89 if (ifa->ifa_flags & IFF_POINTOPOINT) {
90 sin = (struct sockaddr_in *)ifa->ifa_dstaddr;
93 printf(" --> %s", inet_ntoa(sin->sin_addr));
96 sin = (struct sockaddr_in *)ifa->ifa_netmask;
99 if (f_inet != NULL && strcmp(f_inet, "cidr") == 0) {
103 smask = ntohl(sin->sin_addr.s_addr);
104 while ((smask & 1) == 0) {
111 } else if (f_inet != NULL && strcmp(f_inet, "dotted") == 0)
112 printf(" netmask %s", inet_ntoa(sin->sin_addr));
114 printf(" netmask 0x%lx", (unsigned long)ntohl(sin->sin_addr.s_addr));
116 if (ifa->ifa_flags & IFF_BROADCAST) {
117 sin = (struct sockaddr_in *)ifa->ifa_broadaddr;
118 if (sin != NULL && sin->sin_addr.s_addr != 0)
119 printf(" broadcast %s", inet_ntoa(sin->sin_addr));
122 print_vhid(ifa, " ");
127 #define SIN(x) ((struct sockaddr_in *) &(x))
128 static struct sockaddr_in *sintab[] = {
129 SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr),
130 SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr)
134 in_getaddr(const char *s, int which)
136 struct sockaddr_in *sin = sintab[which];
140 sin->sin_len = sizeof(*sin);
141 sin->sin_family = AF_INET;
146 if((p = strrchr(s, '/')) != NULL) {
148 /* address is `name/masklen' */
150 struct sockaddr_in *min = sintab[MASK];
152 if (!isdigit(*(p + 1)))
155 masklen = (int)strtonum(p + 1, 0, 32, &errstr);
156 if (errstr != NULL) {
158 errx(1, "%s: bad value (width %s)", s, errstr);
160 min->sin_family = AF_INET;
161 min->sin_len = sizeof(*min);
162 min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) &
167 if (inet_aton(s, &sin->sin_addr))
169 if ((hp = gethostbyname(s)) != NULL)
170 bcopy(hp->h_addr, (char *)&sin->sin_addr,
171 MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
172 else if ((np = getnetbyname(s)) != NULL)
173 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
175 errx(1, "%s: bad value", s);
179 in_status_tunnel(int s)
181 char src[NI_MAXHOST];
182 char dst[NI_MAXHOST];
184 const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
186 memset(&ifr, 0, sizeof(ifr));
187 strlcpy(ifr.ifr_name, name, IFNAMSIZ);
189 if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
191 if (sa->sa_family != AF_INET)
193 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
196 if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
198 if (sa->sa_family != AF_INET)
200 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
203 printf("\ttunnel inet %s --> %s\n", src, dst);
207 in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
209 struct in_aliasreq addreq;
211 memset(&addreq, 0, sizeof(addreq));
212 strlcpy(addreq.ifra_name, name, IFNAMSIZ);
213 memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
214 memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
216 if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
217 warn("SIOCSIFPHYADDR");
220 static struct afswtch af_inet = {
223 .af_status = in_status,
224 .af_getaddr = in_getaddr,
225 .af_status_tunnel = in_status_tunnel,
226 .af_settunnel = in_set_tunnel,
227 .af_difaddr = SIOCDIFADDR,
228 .af_aifaddr = SIOCAIFADDR,
229 .af_ridreq = &in_ridreq,
230 .af_addreq = &in_addreq,
233 static __constructor void
238 if (!feature_present("inet"))
241 af_register(&af_inet);