268 lines
6.9 KiB
C
268 lines
6.9 KiB
C
/*
|
|
* Copyright (c) 1983, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <ifaddrs.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_var.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
|
|
#include "ifconfig.h"
|
|
|
|
static struct in_aliasreq in_addreq;
|
|
static struct ifreq in_ridreq;
|
|
static char addr_buf[NI_MAXHOST]; /*for getnameinfo()*/
|
|
extern char *f_inet, *f_addr;
|
|
|
|
static void
|
|
in_status(int s __unused, const struct ifaddrs *ifa)
|
|
{
|
|
struct sockaddr_in *sin, null_sin;
|
|
#ifndef FSTACK
|
|
int error, n_flags;
|
|
#endif
|
|
|
|
memset(&null_sin, 0, sizeof(null_sin));
|
|
|
|
sin = (struct sockaddr_in *)ifa->ifa_addr;
|
|
if (sin == NULL)
|
|
return;
|
|
|
|
#ifndef FSTACK
|
|
if (f_addr != NULL && strcmp(f_addr, "fqdn") == 0)
|
|
n_flags = 0;
|
|
else if (f_addr != NULL && strcmp(f_addr, "host") == 0)
|
|
n_flags = NI_NOFQDN;
|
|
else
|
|
n_flags = NI_NUMERICHOST;
|
|
|
|
error = getnameinfo((struct sockaddr *)sin, sin->sin_len, addr_buf,
|
|
sizeof(addr_buf), NULL, 0, n_flags);
|
|
|
|
if (error)
|
|
#endif
|
|
inet_ntop(AF_INET, &sin->sin_addr, addr_buf, sizeof(addr_buf));
|
|
|
|
printf("\tinet %s", addr_buf);
|
|
|
|
if (ifa->ifa_flags & IFF_POINTOPOINT) {
|
|
sin = (struct sockaddr_in *)ifa->ifa_dstaddr;
|
|
if (sin == NULL)
|
|
sin = &null_sin;
|
|
printf(" --> %s ", inet_ntoa(sin->sin_addr));
|
|
}
|
|
|
|
sin = (struct sockaddr_in *)ifa->ifa_netmask;
|
|
if (sin == NULL)
|
|
sin = &null_sin;
|
|
if (f_inet != NULL && strcmp(f_inet, "cidr") == 0) {
|
|
int cidr = 32;
|
|
unsigned long smask;
|
|
|
|
smask = ntohl(sin->sin_addr.s_addr);
|
|
while ((smask & 1) == 0) {
|
|
smask = smask >> 1;
|
|
cidr--;
|
|
if (cidr == 0)
|
|
break;
|
|
}
|
|
printf("/%d ", cidr);
|
|
} else if (f_inet != NULL && strcmp(f_inet, "dotted") == 0)
|
|
printf(" netmask %s ", inet_ntoa(sin->sin_addr));
|
|
else
|
|
printf(" netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
|
|
|
|
if (ifa->ifa_flags & IFF_BROADCAST) {
|
|
sin = (struct sockaddr_in *)ifa->ifa_broadaddr;
|
|
if (sin != NULL && sin->sin_addr.s_addr != 0)
|
|
printf("broadcast %s ", inet_ntoa(sin->sin_addr));
|
|
}
|
|
|
|
print_vhid(ifa, " ");
|
|
|
|
putchar('\n');
|
|
}
|
|
|
|
#define SIN(x) ((struct sockaddr_in *) &(x))
|
|
static struct sockaddr_in *sintab[] = {
|
|
SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr),
|
|
SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr)
|
|
};
|
|
|
|
static void
|
|
in_getaddr(const char *s, int which)
|
|
{
|
|
struct sockaddr_in *sin = sintab[which];
|
|
#ifndef FSTACK
|
|
struct hostent *hp;
|
|
struct netent *np;
|
|
#endif
|
|
|
|
sin->sin_len = sizeof(*sin);
|
|
sin->sin_family = AF_INET;
|
|
|
|
if (which == ADDR) {
|
|
char *p = NULL;
|
|
|
|
if((p = strrchr(s, '/')) != NULL) {
|
|
const char *errstr;
|
|
/* address is `name/masklen' */
|
|
int masklen;
|
|
struct sockaddr_in *min = sintab[MASK];
|
|
*p = '\0';
|
|
if (!isdigit(*(p + 1)))
|
|
errstr = "invalid";
|
|
else
|
|
masklen = (int)strtonum(p + 1, 0, 32, &errstr);
|
|
if (errstr != NULL) {
|
|
*p = '/';
|
|
errx(1, "%s: bad value (width %s)", s, errstr);
|
|
}
|
|
min->sin_family = AF_INET;
|
|
min->sin_len = sizeof(*min);
|
|
min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) &
|
|
0xffffffff);
|
|
}
|
|
}
|
|
|
|
if (inet_aton(s, &sin->sin_addr))
|
|
return;
|
|
#ifdef FSTACK
|
|
else
|
|
errx(1, "%s: bad value", s);
|
|
#else
|
|
if ((hp = gethostbyname(s)) != NULL)
|
|
bcopy(hp->h_addr, (char *)&sin->sin_addr,
|
|
MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
|
|
else if ((np = getnetbyname(s)) != NULL)
|
|
sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
|
|
else
|
|
errx(1, "%s: bad value", s);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
in_status_tunnel(int s)
|
|
{
|
|
char src[NI_MAXHOST];
|
|
char dst[NI_MAXHOST];
|
|
struct ifreq ifr;
|
|
const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
|
|
#ifdef FSTACK
|
|
const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
|
|
#endif
|
|
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
strlcpy(ifr.ifr_name, name, IFNAMSIZ);
|
|
|
|
if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
|
|
return;
|
|
if (sa->sa_family != AF_INET)
|
|
return;
|
|
|
|
#ifndef FSTACK
|
|
if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
|
|
src[0] = '\0';
|
|
#else
|
|
if (inet_ntop(AF_INET, &sin->sin_addr, src, sizeof(src)) == NULL)
|
|
return;
|
|
#endif
|
|
|
|
if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
|
|
return;
|
|
if (sa->sa_family != AF_INET)
|
|
return;
|
|
|
|
#ifndef FSTACK
|
|
if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
|
|
dst[0] = '\0';
|
|
#else
|
|
if (inet_ntop(AF_INET, &sin->sin_addr, dst, sizeof(dst)) == NULL)
|
|
return;
|
|
#endif
|
|
|
|
printf("\ttunnel inet %s --> %s\n", src, dst);
|
|
}
|
|
|
|
static void
|
|
in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
|
|
{
|
|
struct in_aliasreq addreq;
|
|
|
|
memset(&addreq, 0, sizeof(addreq));
|
|
strlcpy(addreq.ifra_name, name, IFNAMSIZ);
|
|
memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
|
|
memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
|
|
|
|
if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
|
|
warn("SIOCSIFPHYADDR");
|
|
}
|
|
|
|
static struct afswtch af_inet = {
|
|
.af_name = "inet",
|
|
.af_af = AF_INET,
|
|
.af_status = in_status,
|
|
.af_getaddr = in_getaddr,
|
|
.af_status_tunnel = in_status_tunnel,
|
|
.af_settunnel = in_set_tunnel,
|
|
.af_difaddr = SIOCDIFADDR,
|
|
.af_aifaddr = SIOCAIFADDR,
|
|
.af_ridreq = &in_ridreq,
|
|
.af_addreq = &in_addreq,
|
|
};
|
|
|
|
static __constructor void
|
|
inet_ctor(void)
|
|
{
|
|
#ifndef FSTACK
|
|
#ifndef RESCUE
|
|
if (!feature_present("inet"))
|
|
return;
|
|
#endif
|
|
#endif
|
|
af_register(&af_inet);
|
|
}
|