freebsd-dev/sbin/ifconfig/ifconfig.c
Poul-Henning Kamp 511d9c69ba unifdef -UISO
Inspired by bdes comment to PR: 7419
1998-08-07 06:36:53 +00:00

1115 lines
26 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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 copyright[] =
"@(#) Copyright (c) 1983, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94";
#endif
static const char rcsid[] =
"$Id: ifconfig.c,v 1.37 1998/07/06 19:54:39 bde Exp $";
#endif /* not lint */
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
/* IP */
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <arpa/inet.h>
#include <netdb.h>
/* IPX */
#define IPXIP
#define IPTUNNEL
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
/* Appletalk */
#include <netatalk/at.h>
/* XNS */
#ifdef NS
#define NSIP
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
/* OSI */
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ifconfig.h"
struct ifreq ifr, ridreq;
struct ifaliasreq addreq;
struct sockaddr_in netmask;
struct netrange at_nr; /* AppleTalk net range */
char name[32];
int flags;
int metric;
int mtu;
int setaddr;
int setipdst;
int doalias;
int clearaddr;
int newaddr = 1;
struct afswtch;
void Perror __P((const char *cmd));
void checkatrange __P((struct sockaddr_at *));
int ifconfig __P((int argc, char *const *argv, const struct afswtch *afp));
void notealias __P((const char *, int, int, const struct afswtch *afp));
void printb __P((const char *s, unsigned value, const char *bits));
void rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *));
void status __P((const struct afswtch *afp, int addrcount,
struct sockaddr_dl *sdl, struct if_msghdr *ifm,
struct ifa_msghdr *ifam));
void usage __P((void));
typedef void c_func __P((const char *cmd, int arg, int s, const struct afswtch *afp));
c_func setatphase, setatrange;
c_func setifaddr, setifbroadaddr, setifdstaddr, setifnetmask;
c_func setifipdst;
c_func setifflags, setifmetric, setifmtu;
#define NEXTARG 0xffffff
const
struct cmd {
const char *c_name;
int c_parameter; /* NEXTARG means next argv */
void (*c_func) __P((const char *, int, int, const struct afswtch *afp));
} cmds[] = {
{ "up", IFF_UP, setifflags } ,
{ "down", -IFF_UP, setifflags },
{ "arp", -IFF_NOARP, setifflags },
{ "-arp", IFF_NOARP, setifflags },
{ "debug", IFF_DEBUG, setifflags },
{ "-debug", -IFF_DEBUG, setifflags },
{ "alias", IFF_UP, notealias },
{ "-alias", -IFF_UP, notealias },
{ "delete", -IFF_UP, notealias },
#ifdef notdef
#define EN_SWABIPS 0x1000
{ "swabips", EN_SWABIPS, setifflags },
{ "-swabips", -EN_SWABIPS, setifflags },
#endif
{ "netmask", NEXTARG, setifnetmask },
{ "range", NEXTARG, setatrange },
{ "phase", NEXTARG, setatphase },
{ "metric", NEXTARG, setifmetric },
{ "broadcast", NEXTARG, setifbroadaddr },
{ "ipdst", NEXTARG, setifipdst },
{ "link0", IFF_LINK0, setifflags },
{ "-link0", -IFF_LINK0, setifflags },
{ "link1", IFF_LINK1, setifflags },
{ "-link1", -IFF_LINK1, setifflags },
{ "link2", IFF_LINK2, setifflags },
{ "-link2", -IFF_LINK2, setifflags },
#ifdef USE_IF_MEDIA
{ "media", NEXTARG, setmedia },
{ "mediaopt", NEXTARG, setmediaopt },
{ "-mediaopt", NEXTARG, unsetmediaopt },
#endif
{ "normal", -IFF_LINK0, setifflags },
{ "compress", IFF_LINK0, setifflags },
{ "noicmp", IFF_LINK1, setifflags },
{ "mtu", NEXTARG, setifmtu },
{ 0, 0, setifaddr },
{ 0, 0, setifdstaddr },
};
/*
* XNS support liberally adapted from code written at the University of
* Maryland principally by James O'Toole and Chris Torek.
*/
typedef void af_status __P((int, struct rt_addrinfo *));
typedef void af_getaddr __P((const char *, int));
af_status in_status, ipx_status, at_status, ether_status;
af_getaddr in_getaddr, ipx_getaddr, at_getaddr;
#ifdef NS
af_status xns_status;
af_getaddr xns_getaddr;
#endif
/* Known address families */
const
struct afswtch {
const char *af_name;
short af_af;
af_status *af_status;
af_getaddr *af_getaddr;
u_long af_difaddr;
u_long af_aifaddr;
caddr_t af_ridreq;
caddr_t af_addreq;
} afs[] = {
#define C(x) ((caddr_t) &x)
{ "inet", AF_INET, in_status, in_getaddr,
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
{ "ipx", AF_IPX, ipx_status, ipx_getaddr,
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
{ "atalk", AF_APPLETALK, at_status, at_getaddr,
SIOCDIFADDR, SIOCAIFADDR, C(addreq), C(addreq) },
#ifdef NS
{ "ns", AF_NS, xns_status, xns_getaddr,
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
#endif
{ "ether", AF_INET, ether_status, NULL }, /* XXX not real!! */
#if 0 /* XXX conflicts with the media command */
#ifdef USE_IF_MEDIA
{ "media", AF_INET, media_status, NULL }, /* XXX not real!! */
#endif
#endif
{ 0, 0, 0, 0 }
};
/*
* Expand the compacted form of addresses as returned via the
* configuration read via sysctl().
*/
#define ROUNDUP(a) \
((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
void
rt_xaddrs(cp, cplim, rtinfo)
caddr_t cp, cplim;
struct rt_addrinfo *rtinfo;
{
struct sockaddr *sa;
int i;
memset(rtinfo->rti_info, 0, sizeof(rtinfo->rti_info));
for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
if ((rtinfo->rti_addrs & (1 << i)) == 0)
continue;
rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
ADVANCE(cp, sa);
}
}
void
usage()
{
fprintf(stderr, "%s\n%s\n%s\n%s\n",
"usage: ifconfig interface address_family [address [dest_address]]",
" [parameters]",
" ifconfig -a [-d] [-u] [address_family]",
" ifconfig -l [-d] [-u] [address_family]");
exit(1);
}
int
main(argc, argv)
int argc;
char *const *argv;
{
int c;
int all, namesonly, downonly, uponly;
int foundit = 0, need_nl = 0;
const struct afswtch *afp = 0;
int addrcount;
struct if_msghdr *ifm, *nextifm;
struct ifa_msghdr *ifam;
struct sockaddr_dl *sdl;
char *buf, *lim, *next;
size_t needed;
int mib[6];
/* Parse leading line options */
all = downonly = uponly = namesonly = 0;
while ((c = getopt(argc, argv, "adlmu")) != -1) {
switch (c) {
case 'a': /* scan all interfaces */
all++;
break;
case 'l': /* scan interface names only */
namesonly++;
break;
case 'd': /* restrict scan to "down" interfaces */
downonly++;
break;
case 'u': /* restrict scan to "up" interfaces */
uponly++;
break;
case 'm': /* show media choices in status */
/* ignored for compatibility */
break;
default:
usage();
break;
}
}
argc -= optind;
argv += optind;
/* -l cannot be used with -a or -m */
if (namesonly && all)
usage();
/* nonsense.. */
if (uponly && downonly)
usage();
/* -a and -l allow an address family arg to limit the output */
if (all || namesonly) {
if (argc > 1)
usage();
if (argc == 1) {
for (afp = afs; afp->af_name; afp++)
if (strcmp(afp->af_name, *argv) == 0) {
argc--, argv++;
break;
}
if (afp->af_name == NULL)
usage();
/* leave with afp non-zero */
}
} else {
/* not listing, need an argument */
if (argc < 1)
usage();
strncpy(name, *argv, sizeof(name));
argc--, argv++;
}
/* Check for address family */
if (argc > 0) {
for (afp = afs; afp->af_name; afp++)
if (strcmp(afp->af_name, *argv) == 0) {
argc--, argv++;
break;
}
if (afp->af_name == NULL)
afp = NULL; /* not a family, NULL */
}
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = 0; /* address family */
mib[4] = NET_RT_IFLIST;
mib[5] = 0;
/* if particular family specified, only ask about it */
if (afp)
mib[3] = afp->af_af;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
errx(1, "iflist-sysctl-estimate");
if ((buf = malloc(needed)) == NULL)
errx(1, "malloc");
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
errx(1, "actual retrieval of interface table");
lim = buf + needed;
next = buf;
while (next < lim) {
ifm = (struct if_msghdr *)next;
if (ifm->ifm_type == RTM_IFINFO) {
sdl = (struct sockaddr_dl *)(ifm + 1);
flags = ifm->ifm_flags;
} else {
fprintf(stderr, "out of sync parsing NET_RT_IFLIST\n");
fprintf(stderr, "expected %d, got %d\n", RTM_IFINFO,
ifm->ifm_type);
fprintf(stderr, "msglen = %d\n", ifm->ifm_msglen);
fprintf(stderr, "buf:%p, next:%p, lim:%p\n", buf, next,
lim);
exit (1);
}
next += ifm->ifm_msglen;
ifam = NULL;
addrcount = 0;
while (next < lim) {
nextifm = (struct if_msghdr *)next;
if (nextifm->ifm_type != RTM_NEWADDR)
break;
if (ifam == NULL)
ifam = (struct ifa_msghdr *)nextifm;
addrcount++;
next += nextifm->ifm_msglen;
}
if (all || namesonly) {
if (uponly)
if ((flags & IFF_UP) == 0)
continue; /* not up */
if (downonly)
if (flags & IFF_UP)
continue; /* not down */
strncpy(name, sdl->sdl_data, sdl->sdl_nlen);
name[sdl->sdl_nlen] = '\0';
if (namesonly) {
if (afp == NULL ||
afp->af_status != ether_status ||
sdl->sdl_type == IFT_ETHER) {
if (need_nl)
putchar(' ');
fputs(name, stdout);
need_nl++;
}
continue;
}
} else {
if (strlen(name) != sdl->sdl_nlen)
continue; /* not same len */
if (strncmp(name, sdl->sdl_data, sdl->sdl_nlen) != 0)
continue; /* not same name */
}
if (argc > 0)
ifconfig(argc, argv, afp);
else
status(afp, addrcount, sdl, ifm, ifam);
if (all == 0 && namesonly == 0) {
foundit++; /* flag it as 'done' */
break;
}
}
free(buf);
if (namesonly && need_nl > 0)
putchar('\n');
if (all == 0 && namesonly == 0 && foundit == 0)
errx(1, "interface %s does not exist", name);
exit (0);
}
int
ifconfig(argc, argv, afp)
int argc;
char *const *argv;
const struct afswtch *afp;
{
int s;
if (afp == NULL)
afp = &afs[0];
ifr.ifr_addr.sa_family = afp->af_af;
strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
while (argc > 0) {
register const struct cmd *p;
for (p = cmds; p->c_name; p++)
if (strcmp(*argv, p->c_name) == 0)
break;
if (p->c_name == 0 && setaddr)
p++; /* got src, do dst */
if (p->c_func) {
if (p->c_parameter == NEXTARG) {
if (argv[1] == NULL)
errx(1, "'%s' requires argument",
p->c_name);
(*p->c_func)(argv[1], 0, s, afp);
argc--, argv++;
} else
(*p->c_func)(*argv, p->c_parameter, s, afp);
}
argc--, argv++;
}
if (setipdst && ifr.ifr_addr.sa_family == AF_IPX) {
struct ipxip_req rq;
int size = sizeof(rq);
rq.rq_ipx = addreq.ifra_addr;
rq.rq_ip = addreq.ifra_dstaddr;
if (setsockopt(s, 0, SO_IPXIP_ROUTE, &rq, size) < 0)
Perror("Encapsulation Routing");
}
if (ifr.ifr_addr.sa_family == AF_APPLETALK)
checkatrange((struct sockaddr_at *) &addreq.ifra_addr);
#ifdef NS
if (setipdst && ifr.ifr_addr.sa_family == AF_NS) {
struct nsip_req rq;
int size = sizeof(rq);
rq.rq_ns = addreq.ifra_addr;
rq.rq_ip = addreq.ifra_dstaddr;
if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0)
Perror("Encapsulation Routing");
}
#endif
if (clearaddr) {
if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
warnx("interface %s cannot change %s addresses!",
name, afp->af_name);
clearaddr = NULL;
}
}
if (clearaddr) {
int ret;
strncpy(afp->af_ridreq, name, sizeof ifr.ifr_name);
if ((ret = ioctl(s, afp->af_difaddr, afp->af_ridreq)) < 0) {
if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
/* means no previous address for interface */
} else
Perror("ioctl (SIOCDIFADDR)");
}
}
if (newaddr) {
if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
warnx("interface %s cannot change %s addresses!",
name, afp->af_name);
newaddr = NULL;
}
}
if (newaddr) {
strncpy(afp->af_addreq, name, sizeof ifr.ifr_name);
if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
Perror("ioctl (SIOCAIFADDR)");
}
close(s);
return(0);
}
#define RIDADDR 0
#define ADDR 1
#define MASK 2
#define DSTADDR 3
/*ARGSUSED*/
void
setifaddr(addr, param, s, afp)
const char *addr;
int param;
int s;
const struct afswtch *afp;
{
/*
* Delay the ioctl to set the interface addr until flags are all set.
* The address interpretation may depend on the flags,
* and the flags may change when the address is set.
*/
setaddr++;
if (doalias == 0)
clearaddr = 1;
(*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR));
}
void
setifnetmask(addr, dummy, s, afp)
const char *addr;
int dummy __unused;
int s;
const struct afswtch *afp;
{
(*afp->af_getaddr)(addr, MASK);
}
void
setifbroadaddr(addr, dummy, s, afp)
const char *addr;
int dummy __unused;
int s;
const struct afswtch *afp;
{
(*afp->af_getaddr)(addr, DSTADDR);
}
void
setifipdst(addr, dummy, s, afp)
const char *addr;
int dummy __unused;
int s;
const struct afswtch *afp;
{
in_getaddr(addr, DSTADDR);
setipdst++;
clearaddr = 0;
newaddr = 0;
}
#define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
void
notealias(addr, param, s, afp)
const char *addr;
int param;
int s;
const struct afswtch *afp;
{
if (setaddr && doalias == 0 && param < 0)
bcopy((caddr_t)rqtosa(af_addreq),
(caddr_t)rqtosa(af_ridreq),
rqtosa(af_addreq)->sa_len);
doalias = param;
if (param < 0) {
clearaddr = 1;
newaddr = 0;
} else
clearaddr = 0;
}
/*ARGSUSED*/
void
setifdstaddr(addr, param, s, afp)
const char *addr;
int param __unused;
int s;
const struct afswtch *afp;
{
(*afp->af_getaddr)(addr, DSTADDR);
}
void
setifflags(vname, value, s, afp)
const char *vname;
int value;
int s;
const struct afswtch *afp;
{
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
Perror("ioctl (SIOCGIFFLAGS)");
exit(1);
}
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
flags = ifr.ifr_flags;
if (value < 0) {
value = -value;
flags &= ~value;
} else
flags |= value;
ifr.ifr_flags = flags;
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
Perror(vname);
}
void
setifmetric(val, dummy, s, afp)
const char *val;
int dummy __unused;
int s;
const struct afswtch *afp;
{
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_metric = atoi(val);
if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
warn("ioctl (set metric)");
}
void
setifmtu(val, dummy, s, afp)
const char *val;
int dummy __unused;
int s;
const struct afswtch *afp;
{
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_mtu = atoi(val);
if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
warn("ioctl (set mtu)");
}
#define IFFBITS \
"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6b6\7RUNNING" \
"\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
"\20MULTICAST"
/*
* Print the status of the interface. If an address family was
* specified, show it and it only; otherwise, show them all.
*/
void
status(afp, addrcount, sdl, ifm, ifam)
const struct afswtch *afp;
int addrcount;
struct sockaddr_dl *sdl;
struct if_msghdr *ifm;
struct ifa_msghdr *ifam;
{
const struct afswtch *p = NULL;
struct rt_addrinfo info;
int allfamilies, s;
if (afp == NULL) {
allfamilies = 1;
afp = &afs[0];
} else
allfamilies = 0;
ifr.ifr_addr.sa_family = afp->af_af;
strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
/*
* XXX is it we are doing a SIOCGIFMETRIC etc for one family.
* is it possible that the metric and mtu can be different for
* each family? If so, we have a format problem, because the
* metric and mtu is printed on the global the flags line.
*/
if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0)
warn("ioctl (SIOCGIFMETRIC)");
else
metric = ifr.ifr_metric;
if (ioctl(s, SIOCGIFMTU, (caddr_t)&ifr) < 0)
warn("ioctl (SIOCGIFMTU)");
else
mtu = ifr.ifr_mtu;
printf("%s: ", name);
printb("flags", flags, IFFBITS);
if (metric)
printf(" metric %d", metric);
if (mtu)
printf(" mtu %d", mtu);
putchar('\n');
while (addrcount > 0) {
info.rti_addrs = ifam->ifam_addrs;
/* Expand the compacted addresses */
rt_xaddrs((char *)(ifam + 1), ifam->ifam_msglen + (char *)ifam,
&info);
if (!allfamilies) {
if (afp->af_af == info.rti_info[RTAX_IFA]->sa_family &&
#ifdef USE_IF_MEDIA
afp->af_status != media_status &&
#endif
afp->af_status != ether_status) {
p = afp;
(*p->af_status)(s, &info);
}
} else for (p = afs; p->af_name; p++) {
if (p->af_af == info.rti_info[RTAX_IFA]->sa_family &&
#ifdef USE_IF_MEDIA
p->af_status != media_status &&
#endif
p->af_status != ether_status)
(*p->af_status)(s, &info);
}
addrcount--;
ifam = (struct ifa_msghdr *)((char *)ifam + ifam->ifam_msglen);
}
if (allfamilies || afp->af_status == ether_status)
ether_status(s, (struct rt_addrinfo *)sdl);
#ifdef USE_IF_MEDIA
if (allfamilies || afp->af_status == media_status)
media_status(s, NULL);
#endif
if (!allfamilies && !p && afp->af_status != media_status &&
afp->af_status != ether_status)
warnx("%s has no %s interface address!", name, afp->af_name);
close(s);
return;
}
void
in_status(s, info)
int s __unused;
struct rt_addrinfo * info;
{
struct sockaddr_in *sin, null_sin;
memset(&null_sin, 0, sizeof(null_sin));
sin = (struct sockaddr_in *)info->rti_info[RTAX_IFA];
printf("\tinet %s ", inet_ntoa(sin->sin_addr));
if (flags & IFF_POINTOPOINT) {
/* note RTAX_BRD overlap with IFF_BROADCAST */
sin = (struct sockaddr_in *)info->rti_info[RTAX_BRD];
if (!sin)
sin = &null_sin;
printf("--> %s ", inet_ntoa(sin->sin_addr));
}
sin = (struct sockaddr_in *)info->rti_info[RTAX_NETMASK];
if (!sin)
sin = &null_sin;
printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
if (flags & IFF_BROADCAST) {
/* note RTAX_BRD overlap with IFF_POINTOPOINT */
sin = (struct sockaddr_in *)info->rti_info[RTAX_BRD];
if (sin && sin->sin_addr.s_addr != 0)
printf("broadcast %s", inet_ntoa(sin->sin_addr));
}
putchar('\n');
}
void
ipx_status(s, info)
int s __unused;
struct rt_addrinfo * info;
{
struct sockaddr_ipx *sipx, null_sipx;
memset(&null_sipx, 0, sizeof(null_sipx));
sipx = (struct sockaddr_ipx *)info->rti_info[RTAX_IFA];
printf("\tipx %s ", ipx_ntoa(sipx->sipx_addr));
if (flags & IFF_POINTOPOINT) {
sipx = (struct sockaddr_ipx *)info->rti_info[RTAX_BRD];
if (!sipx)
sipx = &null_sipx;
printf("--> %s ", ipx_ntoa(sipx->sipx_addr));
}
putchar('\n');
}
void
at_status(s, info)
int s __unused;
struct rt_addrinfo * info;
{
struct sockaddr_at *sat, null_sat;
struct netrange *nr;
memset(&null_sat, 0, sizeof(null_sat));
sat = (struct sockaddr_at *)info->rti_info[RTAX_IFA];
nr = &sat->sat_range.r_netrange;
printf("\tatalk %d.%d range %d-%d phase %d",
ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node,
ntohs(nr->nr_firstnet), ntohs(nr->nr_lastnet), nr->nr_phase);
if (flags & IFF_POINTOPOINT) {
/* note RTAX_BRD overlap with IFF_BROADCAST */
sat = (struct sockaddr_at *)info->rti_info[RTAX_BRD];
if (!sat)
sat = &null_sat;
printf("--> %d.%d",
ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node);
}
if (flags & IFF_BROADCAST) {
/* note RTAX_BRD overlap with IFF_POINTOPOINT */
sat = (struct sockaddr_at *)info->rti_info[RTAX_BRD];
if (sat)
printf(" broadcast %d.%d",
ntohs(sat->sat_addr.s_net),
sat->sat_addr.s_node);
}
putchar('\n');
}
#ifdef NS
void
xns_status(s, info)
int s __unused;
struct rt_addrinfo * info;
{
struct sockaddr_ns *sns, null_sns;
memset(&null_sns, 0, sizeof(null_sns));
sns = (struct sockaddr_ns *)info->rti_info[RTAX_IFA];
printf("\tns %s ", ns_ntoa(sns->sns_addr));
if (flags & IFF_POINTOPOINT) {
sns = (struct sockaddr_ns *)info->rti_info[RTAX_BRD];
if (!sns)
sns = &null_sns;
printf("--> %s ", ns_ntoa(sns->sns_addr));
}
putchar('\n');
close(s);
}
#endif
void
ether_status(s, info)
int s __unused;
struct rt_addrinfo *info;
{
char *cp;
int n;
struct sockaddr_dl *sdl = (struct sockaddr_dl *)info;
cp = (char *)LLADDR(sdl);
if ((n = sdl->sdl_alen) > 0) {
if (sdl->sdl_type == IFT_ETHER)
printf ("\tether ");
else
printf ("\tlladdr ");
while (--n >= 0)
printf("%02x%c",*cp++ & 0xff, n>0? ':' : ' ');
putchar('\n');
}
}
void
Perror(cmd)
const char *cmd;
{
switch (errno) {
case ENXIO:
errx(1, "%s: no such interface", cmd);
break;
case EPERM:
errx(1, "%s: permission denied", cmd);
break;
default:
err(1, "%s", cmd);
}
}
#define SIN(x) ((struct sockaddr_in *) &(x))
struct sockaddr_in *sintab[] = {
SIN(ridreq.ifr_addr), SIN(addreq.ifra_addr),
SIN(addreq.ifra_mask), SIN(addreq.ifra_broadaddr)};
void
in_getaddr(s, which)
const char *s;
int which;
{
register struct sockaddr_in *sin = sintab[which];
struct hostent *hp;
struct netent *np;
sin->sin_len = sizeof(*sin);
if (which != MASK)
sin->sin_family = AF_INET;
if (inet_aton(s, &sin->sin_addr))
return;
if ((hp = gethostbyname(s)) != 0)
bcopy(hp->h_addr, (char *)&sin->sin_addr,
MIN(hp->h_length, sizeof(sin->sin_addr)));
else if ((np = getnetbyname(s)) != 0)
sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
else
errx(1, "%s: bad value", s);
}
/*
* Print a value a la the %b format of the kernel's printf
*/
void
printb(s, v, bits)
const char *s;
register unsigned v;
register const char *bits;
{
register int i, any = 0;
register char c;
if (bits && *bits == 8)
printf("%s=%o", s, v);
else
printf("%s=%x", s, v);
bits++;
if (bits) {
putchar('<');
while ((i = *bits++) != '\0') {
if (v & (1 << (i-1))) {
if (any)
putchar(',');
any = 1;
for (; (c = *bits) > 32; bits++)
putchar(c);
} else
for (; *bits > 32; bits++)
;
}
putchar('>');
}
}
#define SIPX(x) ((struct sockaddr_ipx *) &(x))
struct sockaddr_ipx *sipxtab[] = {
SIPX(ridreq.ifr_addr), SIPX(addreq.ifra_addr),
SIPX(addreq.ifra_mask), SIPX(addreq.ifra_broadaddr)};
void
ipx_getaddr(addr, which)
const char *addr;
int which;
{
struct sockaddr_ipx *sipx = sipxtab[which];
sipx->sipx_family = AF_IPX;
sipx->sipx_len = sizeof(*sipx);
sipx->sipx_addr = ipx_addr(addr);
if (which == MASK)
printf("Attempt to set IPX netmask will be ineffectual\n");
}
void
at_getaddr(addr, which)
const char *addr;
int which;
{
struct sockaddr_at *sat = (struct sockaddr_at *) &addreq.ifra_addr;
u_int net, node;
sat->sat_family = AF_APPLETALK;
sat->sat_len = sizeof(*sat);
if (which == MASK)
errx(1, "AppleTalk does not use netmasks");
if (sscanf(addr, "%u.%u", &net, &node) != 2
|| net > 0xffff || node > 0xfe)
errx(1, "%s: illegal address", addr);
sat->sat_addr.s_net = htons(net);
sat->sat_addr.s_node = node;
}
/* XXX FIXME -- should use strtoul for better parsing. */
void
setatrange(range, dummy, s, afp)
const char *range;
int dummy __unused;
int s;
const struct afswtch *afp;
{
u_short first = 123, last = 123;
if (sscanf(range, "%hu-%hu", &first, &last) != 2
|| first == 0 || first > 0xffff
|| last == 0 || last > 0xffff || first > last)
errx(1, "%s: illegal net range: %u-%u", range, first, last);
at_nr.nr_firstnet = htons(first);
at_nr.nr_lastnet = htons(last);
}
void
setatphase(phase, dummy, s, afp)
const char *phase;
int dummy __unused;
int s;
const struct afswtch *afp;
{
if (!strcmp(phase, "1"))
at_nr.nr_phase = 1;
else if (!strcmp(phase, "2"))
at_nr.nr_phase = 2;
else
errx(1, "%s: illegal phase", phase);
}
void
checkatrange(struct sockaddr_at *sat)
{
if (at_nr.nr_phase == 0)
at_nr.nr_phase = 2; /* Default phase 2 */
if (at_nr.nr_firstnet == 0)
at_nr.nr_firstnet = /* Default range of one */
at_nr.nr_lastnet = sat->sat_addr.s_net;
printf("\tatalk %d.%d range %d-%d phase %d\n",
ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node,
ntohs(at_nr.nr_firstnet), ntohs(at_nr.nr_lastnet), at_nr.nr_phase);
if ((u_short) ntohs(at_nr.nr_firstnet) >
(u_short) ntohs(sat->sat_addr.s_net)
|| (u_short) ntohs(at_nr.nr_lastnet) <
(u_short) ntohs(sat->sat_addr.s_net))
errx(1, "AppleTalk address is not in range");
sat->sat_range.r_netrange = at_nr;
}
#ifdef NS
#define SNS(x) ((struct sockaddr_ns *) &(x))
struct sockaddr_ns *snstab[] = {
SNS(ridreq.ifr_addr), SNS(addreq.ifra_addr),
SNS(addreq.ifra_mask), SNS(addreq.ifra_broadaddr)};
void
xns_getaddr(addr, which)
const char *addr;
int which;
{
struct sockaddr_ns *sns = snstab[which];
sns->sns_family = AF_NS;
sns->sns_len = sizeof(*sns);
sns->sns_addr = ns_addr(addr);
if (which == MASK)
printf("Attempt to set XNS netmask will be ineffectual\n");
}
#endif