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freebsd-dev/sbin/ifconfig/ifconfig.c
John Baldwin de010cdfd0 Add support to the 'ether' address family to support setting of addresses. 
This allows you to set ether addresses with 'ifconfig ether'.  Also, use
some saner socket address families that allow several special case tests
to be removed.
2000-07-12 16:41:47 +00:00

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/*
* 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[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/module.h>
#include <sys/linker.h>
#include <net/ethernet.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"
/* wrapper for KAME-special getnameinfo() */
#ifndef NI_WITHSCOPEID
#define NI_WITHSCOPEID 0
#endif
struct ifreq ifr, ridreq;
struct ifaliasreq addreq;
#ifdef INET6
struct in6_ifreq in6_ridreq;
struct in6_aliasreq in6_addreq;
#endif
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;
#ifdef INET6
static int ip6lifetime;
#endif
struct afswtch;
#ifdef INET6
char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/
#endif
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));
void ifmaybeload __P((char *name));
#ifdef INET6
int prefix __P((void *, int));
static char *sec2str __P((time_t));
int explicit_prefix = 0;
#endif
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;
#ifdef INET6
c_func setifprefixlen;
c_func setip6flags;
#endif
c_func setifipdst;
c_func setifflags, setifmetric, setifmtu, setiflladdr;
#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 },
{ "add", IFF_UP, notealias },
{ "alias", IFF_UP, notealias },
{ "-alias", -IFF_UP, notealias },
{ "delete", -IFF_UP, notealias },
{ "remove", -IFF_UP, notealias },
#ifdef notdef
#define EN_SWABIPS 0x1000
{ "swabips", EN_SWABIPS, setifflags },
{ "-swabips", -EN_SWABIPS, setifflags },
#endif
{ "netmask", NEXTARG, setifnetmask },
#ifdef INET6
{ "prefixlen", NEXTARG, setifprefixlen },
{ "anycast", IN6_IFF_ANYCAST, setip6flags },
{ "tentative", IN6_IFF_TENTATIVE, setip6flags },
{ "-tentative", -IN6_IFF_TENTATIVE, setip6flags },
#endif
{ "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
#ifdef USE_VLANS
{ "vlan", NEXTARG, setvlantag },
{ "vlandev", NEXTARG, setvlandev },
{ "-vlandev", NEXTARG, unsetvlandev },
#endif
{ "normal", -IFF_LINK0, setifflags },
{ "compress", IFF_LINK0, setifflags },
{ "noicmp", IFF_LINK1, setifflags },
{ "mtu", NEXTARG, setifmtu },
{ "lladdr", NEXTARG, setiflladdr },
{ 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));
typedef void af_getprefix __P((const char *, int));
af_status in_status, ipx_status, at_status, ether_status;
af_getaddr in_getaddr, ipx_getaddr, at_getaddr, ether_getaddr;
#ifdef INET6
af_status in6_status;
af_getaddr in6_getaddr;
af_getprefix in6_getprefix;
#endif /*INET6*/
#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;
af_getprefix *af_getprefix;
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, NULL,
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
#ifdef INET6
{ "inet6", AF_INET6, in6_status, in6_getaddr, in6_getprefix,
SIOCDIFADDR_IN6, SIOCAIFADDR_IN6,
C(in6_ridreq), C(in6_addreq) },
#endif /*INET6*/
{ "ipx", AF_IPX, ipx_status, ipx_getaddr, NULL,
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
{ "atalk", AF_APPLETALK, at_status, at_getaddr, NULL,
SIOCDIFADDR, SIOCAIFADDR, C(addreq), C(addreq) },
#ifdef NS
{ "ns", AF_NS, xns_status, xns_getaddr, NULL,
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
#endif
{ "ether", AF_LINK, ether_status, ether_getaddr, NULL,
0, SIOCSIFLLADDR, NULL, C(ridreq) },
#if 0 /* XXX conflicts with the media command */
#ifdef USE_IF_MEDIA
{ "media", AF_UNSPEC, media_status, NULL, NULL, }, /* XXX not real!! */
#endif
#ifdef USE_VLANS
{ "vlan", AF_UNSPEC, vlan_status, NULL, 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()
{
#ifndef INET6
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]");
#else
fprintf(stderr, "%s\n%s\n%s\n%s\n",
"usage: ifconfig [-L] interface address_family [address [dest_address]]",
" [parameters]",
" ifconfig -a [-L] [-d] [-u] [address_family]",
" ifconfig -l [-d] [-u] [address_family]");
#endif
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"
#ifdef INET6
"L"
#endif
)) != -1) {
switch (c) {
case 'a': /* scan all interfaces */
all++;
break;
#ifdef INET6
case 'L':
ip6lifetime++; /* print IPv6 address lifetime */
break;
#endif
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 and maybe load support for this interface */
ifmaybeload(name);
}
/* 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 == AF_LINK ? AF_INET : 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++;
}
#ifdef INET6
if (ifr.ifr_addr.sa_family == AF_INET6 && explicit_prefix == 0) {
/* Aggregatable address architecture defines all prefixes
are 64. So, it is convenient to set prefixlen to 64 if
it is not specified. */
setifprefixlen("64", 0, s, afp);
/* in6_getprefix("64", MASK) if MASK is available here... */
}
#endif
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_addreq == NULL || afp->af_aifaddr == 0) {
warnx("interface %s cannot change %s addresses!",
name, afp->af_name);
newaddr = 0;
}
}
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;
{
if (*afp->af_getaddr == NULL)
return;
/*
* 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 && afp->af_af != AF_LINK)
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;
{
if (*afp->af_getaddr == NULL)
return;
(*afp->af_getaddr)(addr, MASK);
}
#ifdef INET6
void
setifprefixlen(addr, dummy, s, afp)
const char *addr;
int dummy __unused;
int s;
const struct afswtch *afp;
{
if (*afp->af_getprefix)
(*afp->af_getprefix)(addr, MASK);
explicit_prefix = 1;
}
void
setip6flags(dummyaddr, flag, dummysoc, afp)
const char *dummyaddr __unused;
int flag;
int dummysoc __unused;
const struct afswtch *afp;
{
if (afp->af_af != AF_INET6)
err(1, "address flags can be set only for inet6 addresses");
if (flag < 0)
in6_addreq.ifra_flags &= ~(-flag);
else
in6_addreq.ifra_flags |= flag;
}
#endif
void
setifbroadaddr(addr, dummy, s, afp)
const char *addr;
int dummy __unused;
int s;
const struct afswtch *afp;
{
if (*afp->af_getaddr == NULL)
return;
(*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;
{
if (*afp->af_getaddr == NULL)
return;
(*afp->af_getaddr)(addr, DSTADDR);
}
/*
* Note: doing an SIOCIGIFFLAGS scribbles on the union portion
* of the ifreq structure, which may confuse other parts of ifconfig.
* Make a private copy so we can avoid that.
*/
void
setifflags(vname, value, s, afp)
const char *vname;
int value;
int s;
const struct afswtch *afp;
{
struct ifreq my_ifr;
bcopy((char *)&ifr, (char *)&my_ifr, sizeof(struct ifreq));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
Perror("ioctl (SIOCGIFFLAGS)");
exit(1);
}
strncpy(my_ifr.ifr_name, name, sizeof (my_ifr.ifr_name));
flags = my_ifr.ifr_flags;
if (value < 0) {
value = -value;
flags &= ~value;
} else
flags |= value;
my_ifr.ifr_flags = flags;
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_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)");
}
void
setiflladdr(val, dummy, s, afp)
const char *val;
int dummy __unused;
int s;
const struct afswtch *afp;
{
struct ether_addr *ea;
ea = ether_aton(val);
if (ea == NULL) {
warn("malformed link-level address");
return;
}
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_addr.sa_len = ETHER_ADDR_LEN;
ifr.ifr_addr.sa_family = AF_LINK;
bcopy(ea, ifr.ifr_addr.sa_data, ETHER_ADDR_LEN);
if (ioctl(s, SIOCSIFLLADDR, (caddr_t)&ifr) < 0)
warn("ioctl (set lladdr)");
return;
}
#define IFFBITS \
"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6SMART\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;
struct ifstat ifs;
if (afp == NULL) {
allfamilies = 1;
afp = &afs[0];
} else
allfamilies = 0;
ifr.ifr_addr.sa_family = afp->af_af == AF_LINK ? AF_INET : 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) {
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)
(*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
#ifdef USE_VLANS
if (allfamilies || afp->af_status == vlan_status)
vlan_status(s, NULL);
#endif
strncpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
printf("%s", ifs.ascii);
if (!allfamilies && !p && afp->af_status != media_status &&
afp->af_status != ether_status && afp->af_status != vlan_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');
}
#ifdef INET6
void
in6_status(s, info)
int s __unused;
struct rt_addrinfo * info;
{
struct sockaddr_in6 *sin, null_sin;
struct in6_ifreq ifr6;
int s6;
u_int32_t flags6;
struct in6_addrlifetime lifetime;
time_t t = time(NULL);
int error;
u_int32_t scopeid;
memset(&null_sin, 0, sizeof(null_sin));
sin = (struct sockaddr_in6 *)info->rti_info[RTAX_IFA];
strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("ifconfig: socket");
return;
}
ifr6.ifr_addr = *sin;
if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
perror("ifconfig: ioctl(SIOCGIFAFLAG_IN6)");
close(s6);
return;
}
flags6 = ifr6.ifr_ifru.ifru_flags6;
memset(&lifetime, 0, sizeof(lifetime));
ifr6.ifr_addr = *sin;
if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
perror("ifconfig: ioctl(SIOCGIFALIFETIME_IN6)");
close(s6);
return;
}
lifetime = ifr6.ifr_ifru.ifru_lifetime;
close(s6);
/* XXX: embedded link local addr check */
if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
*(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
u_short index;
index = *(u_short *)&sin->sin6_addr.s6_addr[2];
*(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
if (sin->sin6_scope_id == 0)
sin->sin6_scope_id = ntohs(index);
}
scopeid = sin->sin6_scope_id;
error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
sizeof(addr_buf), NULL, 0,
NI_NUMERICHOST|NI_WITHSCOPEID);
if (error != 0)
inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
sizeof(addr_buf));
printf("\tinet6 %s ", addr_buf);
if (flags & IFF_POINTOPOINT) {
/* note RTAX_BRD overlap with IFF_BROADCAST */
sin = (struct sockaddr_in6 *)info->rti_info[RTAX_BRD];
/*
* some of the interfaces do not have valid destination
* address.
*/
if (sin && sin->sin6_family == AF_INET6) {
int error;
/* XXX: embedded link local addr check */
if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
*(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
u_short index;
index = *(u_short *)&sin->sin6_addr.s6_addr[2];
*(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
if (sin->sin6_scope_id == 0)
sin->sin6_scope_id = ntohs(index);
}
error = getnameinfo((struct sockaddr *)sin,
sin->sin6_len, addr_buf,
sizeof(addr_buf), NULL, 0,
NI_NUMERICHOST|NI_WITHSCOPEID);
if (error != 0)
inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
sizeof(addr_buf));
printf("--> %s ", addr_buf);
}
}
sin = (struct sockaddr_in6 *)info->rti_info[RTAX_NETMASK];
if (!sin)
sin = &null_sin;
printf("prefixlen %d ", prefix(&sin->sin6_addr,
sizeof(struct in6_addr)));
if (flags6 & IN6_IFF_ANYCAST)
printf("anycast ");
if (flags6 & IN6_IFF_TENTATIVE)
printf("tentative ");
if (flags6 & IN6_IFF_DUPLICATED)
printf("duplicated ");
if (flags6 & IN6_IFF_DETACHED)
printf("detached ");
if (flags6 & IN6_IFF_DEPRECATED)
printf("deprecated ");
if (scopeid)
printf("scopeid 0x%x ", scopeid);
if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
printf("pltime ");
if (lifetime.ia6t_preferred) {
printf("%s ", lifetime.ia6t_preferred < t
? "0" : sec2str(lifetime.ia6t_preferred - t));
} else
printf("infty ");
printf("vltime ");
if (lifetime.ia6t_expire) {
printf("%s ", lifetime.ia6t_expire < t
? "0" : sec2str(lifetime.ia6t_expire - t));
} else
printf("infty ");
}
putchar('\n');
}
#endif /*INET6*/
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);
}
#ifdef INET6
#define SIN6(x) ((struct sockaddr_in6 *) &(x))
struct sockaddr_in6 *sin6tab[] = {
SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)};
void
in6_getaddr(s, which)
const char *s;
int which;
{
register struct sockaddr_in6 *sin = sin6tab[which];
struct addrinfo hints, *res;
int error = -1;
newaddr &= 1;
sin->sin6_len = sizeof(*sin);
if (which != MASK)
sin->sin6_family = AF_INET6;
if (sin->sin6_family == AF_INET6) {
bzero(&hints, sizeof(struct addrinfo));
hints.ai_family = AF_INET6;
error = getaddrinfo(s, NULL, &hints, &res);
}
if (error != 0) {
if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
errx(1, "%s: bad value", s);
} else
bcopy(res->ai_addr, sin, res->ai_addrlen);
}
void
in6_getprefix(plen, which)
const char *plen;
int which;
{
register struct sockaddr_in6 *sin = sin6tab[which];
register u_char *cp;
int len = atoi(plen);
if ((len < 0) || (len > 128))
errx(1, "%s: bad value", plen);
sin->sin6_len = sizeof(*sin);
if (which != MASK)
sin->sin6_family = AF_INET6;
if ((len == 0) || (len == 128)) {
memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
return;
}
memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
*cp++ = 0xff;
*cp = 0xff << (8 - len);
}
#endif
/*
* 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;
}
void
ether_getaddr(addr, which)
const char *addr;
int which;
{
struct ether_addr *ea;
struct sockaddr *sea = &ridreq.ifr_addr;
ea = ether_aton(addr);
if (ea == NULL)
errx(1, "malformed ether address");
if (which == MASK)
errx(1, "Ethernet does not use netmasks");
sea->sa_family = AF_LINK;
sea->sa_len = ETHER_ADDR_LEN;
bcopy(ea, sea->sa_data, ETHER_ADDR_LEN);
}
/* 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
#ifdef INET6
int
prefix(val, size)
void *val;
int size;
{
register u_char *name = (u_char *)val;
register int byte, bit, plen = 0;
for (byte = 0; byte < size; byte++, plen += 8)
if (name[byte] != 0xff)
break;
if (byte == size)
return (plen);
for (bit = 7; bit != 0; bit--, plen++)
if (!(name[byte] & (1 << bit)))
break;
for (; bit != 0; bit--)
if (name[byte] & (1 << bit))
return(0);
byte++;
for (; byte < size; byte++)
if (name[byte])
return(0);
return (plen);
}
static char *
sec2str(total)
time_t total;
{
static char result[256];
int days, hours, mins, secs;
int first = 1;
char *p = result;
if (0) {
days = total / 3600 / 24;
hours = (total / 3600) % 24;
mins = (total / 60) % 60;
secs = total % 60;
if (days) {
first = 0;
p += sprintf(p, "%dd", days);
}
if (!first || hours) {
first = 0;
p += sprintf(p, "%dh", hours);
}
if (!first || mins) {
first = 0;
p += sprintf(p, "%dm", mins);
}
sprintf(p, "%ds", secs);
} else
sprintf(result, "%lu", (unsigned long)total);
return(result);
}
#endif /*INET6*/
void
ifmaybeload(name)
char *name;
{
struct module_stat mstat;
int fileid, modid;
char ifkind[35], *cp, *dp;
/* turn interface and unit into module name */
strcpy(ifkind, "if_");
for (cp = name, dp = ifkind + 3; (*cp != 0) && !isdigit(*cp); cp++, dp++)
*dp = *cp;
*dp = 0;
/* scan files in kernel */
mstat.version = sizeof(struct module_stat);
for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
/* scan modules in file */
for (modid = kldfirstmod(fileid); modid > 0;
modid = modfnext(modid)) {
if (modstat(modid, &mstat) < 0)
continue;
/* strip bus name if present */
if ((cp = strchr(mstat.name, '/')) != NULL) {
cp++;
} else {
cp = mstat.name;
}
/* already loaded? */
if (!strcmp(ifkind, cp))
return;
}
}
/* not present, we should try to load it */
kldload(ifkind);
}
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