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 * 3. 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
29 * $FreeBSD: src/sbin/ifconfig/af_inet.c,v 1.2 2005/06/16 19:37:09 ume Exp $
32 #include <sys/types.h>
33 #include <sys/ioctl.h>
34 #include <sys/socket.h>
36 #include <net/if_var.h> /* for struct ifaddr */
37 #include <net/route.h> /* for RTX_IFA */
38 #include <netinet/in.h>
39 #include <netinet/in_var.h>
40 #include <arpa/inet.h>
51 static struct ifaliasreq in_addreq;
52 static struct ifreq in_ridreq;
55 in_status(int s __unused, const struct rt_addrinfo * info)
57 struct sockaddr_in *sin, null_sin;
59 memset(&null_sin, 0, sizeof(null_sin));
61 sin = (struct sockaddr_in *)info->rti_info[RTAX_IFA];
65 printf("\tinet %s ", inet_ntoa(sin->sin_addr));
67 if (flags & IFF_POINTOPOINT) {
68 /* note RTAX_BRD overlap with IFF_BROADCAST */
69 sin = (struct sockaddr_in *)info->rti_info[RTAX_BRD];
72 printf("--> %s ", inet_ntoa(sin->sin_addr));
75 sin = (struct sockaddr_in *)info->rti_info[RTAX_NETMASK];
78 printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
80 if (flags & IFF_BROADCAST) {
81 /* note RTAX_BRD overlap with IFF_POINTOPOINT */
82 sin = (struct sockaddr_in *)info->rti_info[RTAX_BRD];
83 if (sin && sin->sin_addr.s_addr != 0)
84 printf("broadcast %s", inet_ntoa(sin->sin_addr));
89 #define SIN(x) ((struct sockaddr_in *) &(x))
90 static struct sockaddr_in *sintab[] = {
91 SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr),
92 SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr)
96 in_getaddr(const char *s, int which)
98 struct sockaddr_in *sin = sintab[which];
102 sin->sin_len = sizeof(*sin);
104 sin->sin_family = AF_INET;
109 if((p = strrchr(s, '/')) != NULL) {
110 /* address is `name/masklen' */
113 struct sockaddr_in *min = sintab[MASK];
115 ret = sscanf(p+1, "%u", &masklen);
116 if(ret != 1 || (masklen < 0 || masklen > 32)) {
118 errx(1, "%s: bad value", s);
120 min->sin_len = sizeof(*min);
121 min->sin_addr.s_addr = htonl(rounddown2(0xffffffff, 1LL << (32 - masklen)));
125 if (inet_aton(s, &sin->sin_addr))
127 if ((hp = gethostbyname(s)) != NULL)
128 bcopy(hp->h_addr, (char *)&sin->sin_addr,
129 MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
130 else if ((np = getnetbyname(s)) != NULL)
131 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
133 errx(1, "%s: bad value", s);
137 in_status_tunnel(int s)
139 char src[NI_MAXHOST];
140 char dst[NI_MAXHOST];
142 const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
144 memset(&ifr, 0, sizeof(ifr));
145 strlcpy(ifr.ifr_name, name, IFNAMSIZ);
147 if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
149 if (sa->sa_family != AF_INET)
151 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
154 if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
156 if (sa->sa_family != AF_INET)
158 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
161 printf("\ttunnel inet %s --> %s\n", src, dst);
165 in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
167 struct ifaliasreq addreq;
169 memset(&addreq, 0, sizeof(addreq));
170 strlcpy(addreq.ifra_name, name, IFNAMSIZ);
171 memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
172 memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
174 if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
175 warn("SIOCSIFPHYADDR");
178 static struct afswtch af_inet = {
181 .af_status = in_status,
182 .af_getaddr = in_getaddr,
183 .af_status_tunnel = in_status_tunnel,
184 .af_settunnel = in_set_tunnel,
185 .af_difaddr = SIOCDIFADDR,
186 .af_aifaddr = SIOCAIFADDR,
187 .af_ridreq = &in_ridreq,
188 .af_addreq = &in_addreq,
191 static __constructor(101) void
194 af_register(&af_inet);