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>
48 #include <netinet/in.h>
49 #include <net/if_var.h> /* for struct ifaddr */
50 #include <netinet/in_var.h>
51 #include <arpa/inet.h>
56 static struct in_aliasreq in_addreq;
57 static struct ifreq in_ridreq;
60 in_status(int s __unused, const struct ifaddrs *ifa)
62 struct sockaddr_in *sin, null_sin;
64 memset(&null_sin, 0, sizeof(null_sin));
66 sin = (struct sockaddr_in *)ifa->ifa_addr;
70 printf("\tinet %s ", inet_ntoa(sin->sin_addr));
72 if (ifa->ifa_flags & IFF_POINTOPOINT) {
73 sin = (struct sockaddr_in *)ifa->ifa_dstaddr;
76 printf("--> %s ", inet_ntoa(sin->sin_addr));
79 sin = (struct sockaddr_in *)ifa->ifa_netmask;
82 printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
84 if (ifa->ifa_flags & IFF_BROADCAST) {
85 sin = (struct sockaddr_in *)ifa->ifa_broadaddr;
86 if (sin != NULL && sin->sin_addr.s_addr != 0)
87 printf("broadcast %s", inet_ntoa(sin->sin_addr));
92 #define SIN(x) ((struct sockaddr_in *) &(x))
93 static struct sockaddr_in *sintab[] = {
94 SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr),
95 SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr)
99 in_getaddr(const char *s, int which)
101 #define MIN(a,b) ((a)<(b)?(a):(b))
102 struct sockaddr_in *sin = sintab[which];
106 sin->sin_len = sizeof(*sin);
107 sin->sin_family = AF_INET;
112 if((p = strrchr(s, '/')) != NULL) {
114 /* address is `name/masklen' */
116 struct sockaddr_in *min = sintab[MASK];
118 if (!isdigit(*(p + 1)))
121 masklen = (int)strtonum(p + 1, 0, 32, &errstr);
122 if (errstr != NULL) {
124 errx(1, "%s: bad value (width %s)", s, errstr);
126 min->sin_family = AF_INET;
127 min->sin_len = sizeof(*min);
128 min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) &
133 if (inet_aton(s, &sin->sin_addr))
135 if ((hp = gethostbyname(s)) != 0)
136 bcopy(hp->h_addr, (char *)&sin->sin_addr,
137 MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
138 else if ((np = getnetbyname(s)) != 0)
139 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
141 errx(1, "%s: bad value", s);
146 in_status_tunnel(int s)
148 char src[NI_MAXHOST];
149 char dst[NI_MAXHOST];
151 const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
153 memset(&ifr, 0, sizeof(ifr));
154 strncpy(ifr.ifr_name, name, IFNAMSIZ);
156 if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
158 if (sa->sa_family != AF_INET)
160 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
163 if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
165 if (sa->sa_family != AF_INET)
167 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
170 printf("\ttunnel inet %s --> %s\n", src, dst);
174 in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
176 struct in_aliasreq addreq;
178 memset(&addreq, 0, sizeof(addreq));
179 strncpy(addreq.ifra_name, name, IFNAMSIZ);
180 memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
181 memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
183 if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
184 warn("SIOCSIFPHYADDR");
187 static struct afswtch af_inet = {
190 .af_status = in_status,
191 .af_getaddr = in_getaddr,
192 .af_status_tunnel = in_status_tunnel,
193 .af_settunnel = in_set_tunnel,
194 .af_difaddr = SIOCDIFADDR,
195 .af_aifaddr = SIOCAIFADDR,
196 .af_ridreq = &in_ridreq,
197 .af_addreq = &in_addreq,
200 static __constructor void
205 if (!feature_present("inet"))
208 af_register(&af_inet);