2 * Copyright (c) 1983, 1993
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6 * modification, are permitted provided that the following conditions
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
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23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 * $FreeBSD: src/sbin/ifconfig/af_inet.c,v 1.2 2005/06/16 19:37:09 ume Exp $
32 #include <sys/param.h>
33 #include <sys/types.h>
34 #include <sys/ioctl.h>
35 #include <sys/socket.h>
37 #include <net/if_var.h> /* for struct ifaddr */
38 #include <netinet/in.h>
39 #include <netinet/in_var.h>
40 #include <arpa/inet.h>
52 static struct ifaliasreq in_addreq
;
53 static struct ifreq in_ridreq
;
54 static char addr_buf
[NI_MAXHOST
]; /* for getnameinfo() */
57 in_status(int s __unused
, const struct ifaddrs
*ifa
)
59 struct sockaddr_in
*sin
, null_sin
;
62 memset(&null_sin
, 0, sizeof(null_sin
));
64 sin
= (struct sockaddr_in
*)ifa
->ifa_addr
;
68 if (f_addr
!= NULL
&& strcmp(f_addr
, "fqdn") == 0)
70 else if (f_addr
!= NULL
&& strcmp(f_addr
, "host") == 0)
73 n_flags
= NI_NUMERICHOST
;
75 error
= getnameinfo((struct sockaddr
*)sin
, sin
->sin_len
, addr_buf
,
76 sizeof(addr_buf
), NULL
, 0, n_flags
);
78 inet_ntop(AF_INET
, &sin
->sin_addr
, addr_buf
, sizeof(addr_buf
));
80 printf("\tinet %s", addr_buf
);
82 if (ifa
->ifa_flags
& IFF_POINTOPOINT
) {
83 sin
= (struct sockaddr_in
*)ifa
->ifa_dstaddr
;
86 printf(" --> %s", inet_ntoa(sin
->sin_addr
));
89 sin
= (struct sockaddr_in
*)ifa
->ifa_netmask
;
92 if (f_inet
!= NULL
&& strcmp(f_inet
, "cidr") == 0) {
94 unsigned long smask
= ntohl(sin
->sin_addr
.s_addr
);
96 while ((smask
& 1) == 0) {
103 } else if (f_inet
!= NULL
&& strcmp(f_inet
, "dotted") == 0) {
104 printf(" netmask %s", inet_ntoa(sin
->sin_addr
));
106 printf(" netmask 0x%lx",
107 (unsigned long)ntohl(sin
->sin_addr
.s_addr
));
110 if (ifa
->ifa_flags
& IFF_BROADCAST
) {
111 sin
= (struct sockaddr_in
*)ifa
->ifa_broadaddr
;
112 if (sin
!= NULL
&& sin
->sin_addr
.s_addr
!= 0)
113 printf(" broadcast %s", inet_ntoa(sin
->sin_addr
));
118 #define SIN(x) ((struct sockaddr_in *) &(x))
119 static struct sockaddr_in
*sintab
[] = {
120 SIN(in_ridreq
.ifr_addr
), SIN(in_addreq
.ifra_addr
),
121 SIN(in_addreq
.ifra_mask
), SIN(in_addreq
.ifra_broadaddr
)
125 in_getaddr(const char *s
, int which
)
127 struct sockaddr_in
*sin
= sintab
[which
];
131 sin
->sin_len
= sizeof(*sin
);
133 sin
->sin_family
= AF_INET
;
138 if((p
= strrchr(s
, '/')) != NULL
) {
139 /* address is `name/masklen' */
142 struct sockaddr_in
*min
= sintab
[MASK
];
144 ret
= sscanf(p
+1, "%u", &masklen
);
145 if(ret
!= 1 || (masklen
< 0 || masklen
> 32)) {
147 errx(1, "%s: bad value", s
);
149 min
->sin_len
= sizeof(*min
);
150 min
->sin_addr
.s_addr
= htonl(rounddown2(0xffffffff, 1LL << (32 - masklen
)));
154 if (inet_aton(s
, &sin
->sin_addr
))
156 if ((hp
= gethostbyname(s
)) != NULL
)
157 bcopy(hp
->h_addr
, (char *)&sin
->sin_addr
,
158 MIN((size_t)hp
->h_length
, sizeof(sin
->sin_addr
)));
159 else if ((np
= getnetbyname(s
)) != NULL
)
160 sin
->sin_addr
= inet_makeaddr(np
->n_net
, INADDR_ANY
);
162 errx(1, "%s: bad value", s
);
166 in_status_tunnel(int s
)
168 char src
[NI_MAXHOST
];
169 char dst
[NI_MAXHOST
];
171 const struct sockaddr
*sa
= (const struct sockaddr
*) &ifr
.ifr_addr
;
173 memset(&ifr
, 0, sizeof(ifr
));
174 strlcpy(ifr
.ifr_name
, name
, IFNAMSIZ
);
176 if (ioctl(s
, SIOCGIFPSRCADDR
, (caddr_t
)&ifr
) < 0)
178 if (sa
->sa_family
!= AF_INET
)
180 if (getnameinfo(sa
, sa
->sa_len
, src
, sizeof(src
), 0, 0, NI_NUMERICHOST
) != 0)
183 if (ioctl(s
, SIOCGIFPDSTADDR
, (caddr_t
)&ifr
) < 0)
185 if (sa
->sa_family
!= AF_INET
)
187 if (getnameinfo(sa
, sa
->sa_len
, dst
, sizeof(dst
), 0, 0, NI_NUMERICHOST
) != 0)
190 printf("\ttunnel inet %s --> %s\n", src
, dst
);
194 in_set_tunnel(int s
, struct addrinfo
*srcres
, struct addrinfo
*dstres
)
196 struct ifaliasreq addreq
;
198 memset(&addreq
, 0, sizeof(addreq
));
199 strlcpy(addreq
.ifra_name
, name
, IFNAMSIZ
);
200 memcpy(&addreq
.ifra_addr
, srcres
->ai_addr
, srcres
->ai_addr
->sa_len
);
201 memcpy(&addreq
.ifra_dstaddr
, dstres
->ai_addr
, dstres
->ai_addr
->sa_len
);
203 if (ioctl(s
, SIOCSIFPHYADDR
, &addreq
) < 0)
204 warn("SIOCSIFPHYADDR");
207 static struct afswtch af_inet
= {
210 .af_status
= in_status
,
211 .af_getaddr
= in_getaddr
,
212 .af_status_tunnel
= in_status_tunnel
,
213 .af_settunnel
= in_set_tunnel
,
214 .af_difaddr
= SIOCDIFADDR
,
215 .af_aifaddr
= SIOCAIFADDR
,
216 .af_ridreq
= &in_ridreq
,
217 .af_addreq
= &in_addreq
,
220 static __constructor(101) void
223 af_register(&af_inet
);