2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
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29 * $FreeBSD: src/sbin/ifconfig/af_inet.c,v 1.2 2005/06/16 19:37:09 ume Exp $
30 * $DragonFly: src/sbin/ifconfig/af_inet.c,v 1.2 2006/06/24 07:51:37 sephe Exp $
33 #include <sys/types.h>
34 #include <sys/ioctl.h>
35 #include <sys/socket.h>
37 #include <net/route.h> /* for RTX_IFA */
45 #include <netinet/in.h>
46 #include <net/if_var.h> /* for struct ifaddr */
47 #include <netinet/in_var.h>
48 #include <arpa/inet.h>
53 static struct ifaliasreq in_addreq;
54 static struct ifreq in_ridreq;
57 in_status(int s __unused, const struct rt_addrinfo * info)
59 struct sockaddr_in *sin, null_sin;
61 memset(&null_sin, 0, sizeof(null_sin));
63 sin = (struct sockaddr_in *)info->rti_info[RTAX_IFA];
67 printf("\tinet %s ", inet_ntoa(sin->sin_addr));
69 if (flags & IFF_POINTOPOINT) {
70 /* note RTAX_BRD overlap with IFF_BROADCAST */
71 sin = (struct sockaddr_in *)info->rti_info[RTAX_BRD];
74 printf("--> %s ", inet_ntoa(sin->sin_addr));
77 sin = (struct sockaddr_in *)info->rti_info[RTAX_NETMASK];
80 printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
82 if (flags & IFF_BROADCAST) {
83 /* note RTAX_BRD overlap with IFF_POINTOPOINT */
84 sin = (struct sockaddr_in *)info->rti_info[RTAX_BRD];
85 if (sin && 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 struct sockaddr_in *sin = sintab[which];
104 sin->sin_len = sizeof(*sin);
106 sin->sin_family = AF_INET;
111 if((p = strrchr(s, '/')) != NULL) {
112 /* address is `name/masklen' */
115 struct sockaddr_in *min = sintab[MASK];
117 ret = sscanf(p+1, "%u", &masklen);
118 if(ret != 1 || (masklen < 0 || masklen > 32)) {
120 errx(1, "%s: bad value", s);
122 min->sin_len = sizeof(*min);
123 min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) &
128 if (inet_aton(s, &sin->sin_addr))
130 if ((hp = gethostbyname(s)) != 0)
131 bcopy(hp->h_addr, (char *)&sin->sin_addr,
132 MIN(hp->h_length, sizeof(sin->sin_addr)));
133 else if ((np = getnetbyname(s)) != 0)
134 sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
136 errx(1, "%s: bad value", s);
140 in_status_tunnel(int s)
142 char src[NI_MAXHOST];
143 char dst[NI_MAXHOST];
145 const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
147 memset(&ifr, 0, sizeof(ifr));
148 strncpy(ifr.ifr_name, name, IFNAMSIZ);
150 if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
152 if (sa->sa_family != AF_INET)
154 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
157 if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
159 if (sa->sa_family != AF_INET)
161 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
164 printf("\ttunnel inet %s --> %s\n", src, dst);
168 in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
170 struct ifaliasreq addreq;
172 memset(&addreq, 0, sizeof(addreq));
173 strncpy(addreq.ifra_name, name, IFNAMSIZ);
174 memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
175 memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
177 if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
178 warn("SIOCSIFPHYADDR");
181 static struct afswtch af_inet = {
184 .af_status = in_status,
185 .af_getaddr = in_getaddr,
186 .af_status_tunnel = in_status_tunnel,
187 .af_settunnel = in_set_tunnel,
188 .af_difaddr = SIOCDIFADDR,
189 .af_aifaddr = SIOCAIFADDR,
190 .af_ridreq = &in_ridreq,
191 .af_addreq = &in_addreq,
194 static __constructor void
197 af_register(&af_inet);