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NetBSD/usr.sbin/ndp/ndp.c

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ndp, "arp"-alike command for IPv6.
1999-07-02 00:33:55 +04:00
/*
* Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
* 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
*/
/*
* Copyright (c) 1984, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Sun Microsystems, Inc.
*
* 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.
*/
/*
* Based on:
* "@(#) Copyright (c) 1984, 1993\n\
* The Regents of the University of California. All rights reserved.\n";
*
* "@(#)arp.c 8.2 (Berkeley) 1/2/94";
*/
/*
* ndp - display, set, delete and flush neighbor cache
*/
#include <sys/param.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <net/if.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
#include <net/if_var.h>
#endif /* __FreeBSD__ >= 3 */
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#ifndef __NetBSD__
#include <netinet/if_ether.h>
#endif
#include <netinet/icmp6.h>
#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <nlist.h>
#include <stdio.h>
#include <string.h>
#include <paths.h>
#include <err.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include "gmt2local.h"
extern int errno;
static int pid;
static int fflag;
static int nflag;
static int tflag;
static int32_t thiszone; /* time difference with gmt */
static int s = -1;
static int repeat = 0;
char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */
char ifix_buf[IFNAMSIZ]; /* if_indextoname() */
int main __P((int, char **));
int file __P((char *));
void getsocket __P((void));
int set __P((int, char **));
void get __P((char *));
int delete __P((char *));
void dump __P((struct in6_addr *));
static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr, int ifindex));
static char *ether_str __P((struct sockaddr_dl *));
int ndp_ether_aton __P((char *, u_char *));
void usage __P((void));
int rtmsg __P((int));
void ifinfo __P((char *));
void rtrlist __P((void));
void plist __P((void));
void pfx_flush __P((void));
void rtr_flush __P((void));
void harmonize_rtr __P((void));
void quit __P((char *));
static char *sec2str __P((time_t t));
static char *ether_str __P((struct sockaddr_dl *sdl));
static void ts_print __P((const struct timeval *));
int
main(argc, argv)
int argc;
char **argv;
{
int ch;
int aflag = 0, cflag = 0, dflag = 0, sflag = 0, Hflag = 0,
pflag = 0, rflag = 0, Pflag = 0, Rflag = 0;
extern char *optarg;
extern int optind;
pid = getpid();
thiszone = gmt2local(0);
while ((ch = getopt(argc, argv, "acndfiprstA:HPR")) != EOF)
switch ((char)ch) {
case 'a':
aflag = 1;
break;
case 'c':
fflag = 1;
cflag = 1;
break;
case 'd':
dflag = 1;
break;
case 'i' :
if (argc != 3)
usage();
ifinfo(argv[2]);
exit(0);
case 'n':
nflag = 1;
continue;
case 'p':
pflag = 1;
break;
case 'f' :
if (argc != 3)
usage();
file(argv[2]);
exit(0);
case 'r' :
rflag = 1;
break;
case 's':
sflag = 1;
break;
case 't':
tflag = 1;
break;
case 'A':
aflag = 1;
repeat = atoi(optarg);
if (repeat < 0)
usage();
break;
case 'H' :
Hflag = 1;
break;
case 'P':
Pflag = 1;
break;
case 'R':
Rflag = 1;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (aflag || cflag) {
dump(0);
exit(0);
}
if (dflag) {
if (argc != 1)
usage();
delete(argv[0]);
}
if (pflag) {
plist();
exit(0);
}
if (rflag) {
rtrlist();
exit(0);
}
if (sflag) {
if (argc < 2 || argc > 4)
usage();
exit(set(argc, argv) ? 1 : 0);
}
if (Hflag) {
harmonize_rtr();
exit(0);
}
if (Pflag) {
pfx_flush();
exit(0);
}
if (Rflag) {
rtr_flush();
exit(0);
}
if (argc != 1)
usage();
get(argv[0]);
exit(0);
}
/*
* Process a file to set standard ndp entries
*/
int
file(name)
char *name;
{
FILE *fp;
int i, retval;
char line[100], arg[5][50], *args[5];
if ((fp = fopen(name, "r")) == NULL) {
fprintf(stderr, "ndp: cannot open %s\n", name);
exit(1);
}
args[0] = &arg[0][0];
args[1] = &arg[1][0];
args[2] = &arg[2][0];
args[3] = &arg[3][0];
args[4] = &arg[4][0];
retval = 0;
while(fgets(line, 100, fp) != NULL) {
i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2],
arg[3], arg[4]);
if (i < 2) {
fprintf(stderr, "ndp: bad line: %s\n", line);
retval = 1;
continue;
}
if (set(i, args))
retval = 1;
}
fclose(fp);
return (retval);
}
void
getsocket()
{
if (s < 0) {
s = socket(PF_ROUTE, SOCK_RAW, 0);
if (s < 0) {
perror("ndp: socket");
exit(1);
}
}
}
struct sockaddr_in so_mask = {8, 0, 0, { 0xffffffff}};
struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
int expire_time, flags, found_entry;
struct {
struct rt_msghdr m_rtm;
char m_space[512];
} m_rtmsg;
/*
* Set an individual neighbor cache entry
*/
int
set(argc, argv)
int argc;
char **argv;
{
register struct sockaddr_in6 *sin = &sin_m;
register struct sockaddr_dl *sdl;
register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
struct addrinfo hints, *res;
int gai_error;
u_char *ea;
char *host = argv[0], *eaddr = argv[1];
getsocket();
argc -= 2;
argv += 2;
sdl_m = blank_sdl;
sin_m = blank_sin;
bzero(&hints, sizeof(hints));
hints.ai_family = AF_INET6;
gai_error = getaddrinfo(host, NULL, &hints, &res);
if (gai_error) {
fprintf(stderr, "ndp: %s: %s\n", host,
gai_strerror(gai_error));
return 1;
}
sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
ea = (u_char *)LLADDR(&sdl_m);
if (ndp_ether_aton(eaddr, ea) == 0)
sdl_m.sdl_alen = 6;
flags = expire_time = 0;
while (argc-- > 0) {
if (strncmp(argv[0], "temp", 4) == 0) {
struct timeval time;
gettimeofday(&time, 0);
expire_time = time.tv_sec + 20 * 60;
}
argv++;
}
tryagain:
if (rtmsg(RTM_GET) < 0) {
perror(host);
return (1);
}
sin = (struct sockaddr_in6 *)(rtm + 1);
sdl = (struct sockaddr_dl *)(sin->sin6_len + (char *)sin);
if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
if (sdl->sdl_family == AF_LINK &&
(rtm->rtm_flags & RTF_LLINFO) &&
!(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) {
case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
case IFT_ISO88024: case IFT_ISO88025:
goto overwrite;
}
goto tryagain;
}
overwrite:
if (sdl->sdl_family != AF_LINK) {
printf("cannot intuit interface index and type for %s\n", host);
return (1);
}
sdl_m.sdl_type = sdl->sdl_type;
sdl_m.sdl_index = sdl->sdl_index;
return (rtmsg(RTM_ADD));
}
/*
* Display an individual neighbor cache entry
*/
void
get(host)
char *host;
{
struct sockaddr_in6 *sin = &sin_m;
struct addrinfo hints, *res;
int gai_error;
sin_m = blank_sin;
bzero(&hints, sizeof(hints));
hints.ai_family = AF_INET6;
gai_error = getaddrinfo(host, NULL, &hints, &res);
if (gai_error) {
fprintf(stderr, "ndp: %s: %s\n", host,
gai_strerror(gai_error));
return;
}
sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
dump(&sin->sin6_addr);
if (found_entry == 0) {
printf("%s (%s) -- no entry\n",
host, inet_ntop(AF_INET6, &sin->sin6_addr, ntop_buf,
sizeof(ntop_buf)));
exit(1);
}
}
/*
* Delete a neighbor cache entry
*/
int
delete(host)
char *host;
{
register struct sockaddr_in6 *sin = &sin_m;
register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
struct sockaddr_dl *sdl;
struct addrinfo hints, *res;
int gai_error;
getsocket();
sin_m = blank_sin;
bzero(&hints, sizeof(hints));
hints.ai_family = AF_INET6;
gai_error = getaddrinfo(host, NULL, &hints, &res);
if (gai_error) {
fprintf(stderr, "ndp: %s: %s\n", host,
gai_strerror(gai_error));
return 1;
}
sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
/*tryagain:*/
if (rtmsg(RTM_GET) < 0) {
perror(host);
return (1);
}
sin = (struct sockaddr_in6 *)(rtm + 1);
sdl = (struct sockaddr_dl *)(sin->sin6_len + (char *)sin);
if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
if (sdl->sdl_family == AF_LINK &&
(rtm->rtm_flags & RTF_LLINFO) &&
!(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) {
case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
case IFT_ISO88024: case IFT_ISO88025:
goto delete;
}
}
delete:
if (sdl->sdl_family != AF_LINK) {
printf("cannot locate %s\n", host);
return (1);
}
if (rtmsg(RTM_DELETE) == 0)
printf("%s (%s) deleted\n", host,
inet_ntop(AF_INET6, &sin->sin6_addr, ntop_buf,
sizeof(ntop_buf)));
return 0;
}
/*
* Dump the entire neighbor cache
*/
void
dump(addr)
struct in6_addr *addr;
{
int mib[6];
size_t needed;
char *host, *lim, *buf, *next;
struct rt_msghdr *rtm;
struct sockaddr_in6 *sin;
struct sockaddr_dl *sdl;
extern int h_errno;
struct hostent *hp;
struct in6_nbrinfo *nbi;
struct timeval time;
/* Print header */
if (!tflag)
printf("%-29.29s %-18.18s %6.6s %-9.9s %2s %4s %4s\n",
"Neighbor", "Linklayer Address", "Netif", "Expire",
"St", "Flgs", "Prbs");
again:;
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = AF_INET6;
mib[4] = NET_RT_FLAGS;
mib[5] = RTF_LLINFO;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
quit("route-sysctl-estimate");
if ((buf = malloc(needed)) == NULL)
quit("malloc");
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
quit("actual retrieval of routing table");
lim = buf + needed;
for (next = buf; next < lim; next += rtm->rtm_msglen) {
int isrouter = 0, prbs = 0;
rtm = (struct rt_msghdr *)next;
sin = (struct sockaddr_in6 *)(rtm + 1);
sdl = (struct sockaddr_dl *)(sin + 1);
if (addr) {
if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
continue;
found_entry = 1;
} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
continue;
if (fflag == 1) {
delete((char *)inet_ntop(AF_INET6, &sin->sin6_addr,
ntop_buf, sizeof(ntop_buf)));
continue;
}
host = NULL;
if (nflag == 0) {
hp = gethostbyaddr((char *)&sin->sin6_addr,
sizeof(struct in6_addr), AF_INET6);
if (hp)
host = hp->h_name;
}
if (host == NULL) {
inet_ntop(AF_INET6, &sin->sin6_addr,
ntop_buf, sizeof(ntop_buf));
host = ntop_buf;
}
gettimeofday(&time, 0);
if (tflag)
ts_print(&time);
printf("%-29.29s %-18.18s %6.6s", host,
ether_str(sdl),
if_indextoname(sdl->sdl_index, ifix_buf));
/* Print neighbor discovery specific informations */
putchar(' ');
nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index);
if (nbi) {
if (nbi->expire > time.tv_sec) {
printf(" %-9.9s",
sec2str(nbi->expire - time.tv_sec));
}
else if (nbi->expire == 0)
printf(" %-9.9s", "permanent");
else
printf(" %-9.9s", "expired");
switch(nbi->state) {
case ND6_LLINFO_NOSTATE:
printf(" N");
break;
case ND6_LLINFO_WAITDELETE:
printf(" W");
break;
case ND6_LLINFO_INCOMPLETE:
printf(" I");
break;
case ND6_LLINFO_REACHABLE:
printf(" R");
break;
case ND6_LLINFO_STALE:
printf(" S");
break;
case ND6_LLINFO_DELAY:
printf(" D");
break;
case ND6_LLINFO_PROBE:
printf(" P");
break;
default:
printf(" ?");
break;
}
isrouter = nbi->isrouter;
prbs = nbi->asked;
}
else {
warnx("failed to get neighbor information");
printf(" ");
}
/* other flags */
putchar(' ');
{
u_char flgbuf[8], *p = flgbuf;
flgbuf[0] = '\0';
if (isrouter)
p += sprintf((char *)p, "R");
#ifndef RADISH
if (rtm->rtm_addrs & RTA_NETMASK) {
sin = (struct sockaddr_in6 *)
(sdl->sdl_len + (char *)sdl);
if (!IN6_IS_ADDR_ANY(&sin->sin6_addr))
p += sprintf((char *)p, "P");
if (sin->sin6_len != sizeof(struct sockaddr_in6))
p += sprintf((char *)p, "W");
}
#endif /*RADISH*/
printf("%4s", flgbuf);
}
putchar(' ');
if (prbs)
printf("% 4d", prbs);
printf("\n");
}
if (repeat) {
printf("\n");
sleep(repeat);
goto again;
}
}
static struct in6_nbrinfo *
getnbrinfo(addr, ifindex)
struct in6_addr *addr;
int ifindex;
{
static struct in6_nbrinfo nbi;
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
bzero(&nbi, sizeof(nbi));
if_indextoname(ifindex, nbi.ifname);
nbi.addr = *addr;
if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
warn("ioctl");
close(s);
return(NULL);
}
close(s);
return(&nbi);
}
static char *
ether_str(sdl)
struct sockaddr_dl *sdl;
{
static char ebuf[32];
u_char *cp;
if (sdl->sdl_alen) {
cp = (u_char *)LLADDR(sdl);
sprintf(ebuf, "%x:%x:%x:%x:%x:%x",
cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
}
else {
sprintf(ebuf, "(incomplete)");
}
return(ebuf);
}
int
ndp_ether_aton(a, n)
char *a;
u_char *n;
{
int i, o[6];
i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
&o[3], &o[4], &o[5]);
if (i != 6) {
fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
return (1);
}
for (i=0; i<6; i++)
n[i] = o[i];
return (0);
}
void
usage()
{
printf("usage: ndp hostname\n");
printf(" ndp -a[nt]\n");
printf(" ndp [-nt] -A wait\n");
printf(" ndp -c[nt]\n");
printf(" ndp -d[nt] hostname\n");
printf(" ndp -f[nt] filename\n");
printf(" ndp -i interface\n");
printf(" ndp -p\n");
printf(" ndp -r\n");
printf(" ndp -s hostname ether_addr [temp]\n");
printf(" ndp -H\n");
printf(" ndp -P\n");
printf(" ndp -R\n");
exit(1);
}
int
rtmsg(cmd)
int cmd;
{
static int seq;
int rlen;
register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
register char *cp = m_rtmsg.m_space;
register int l;
errno = 0;
if (cmd == RTM_DELETE)
goto doit;
bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
rtm->rtm_flags = flags;
rtm->rtm_version = RTM_VERSION;
switch (cmd) {
default:
fprintf(stderr, "ndp: internal wrong cmd\n");
exit(1);
case RTM_ADD:
rtm->rtm_addrs |= RTA_GATEWAY;
rtm->rtm_rmx.rmx_expire = expire_time;
rtm->rtm_inits = RTV_EXPIRE;
rtm->rtm_flags |= (RTF_HOST | RTF_STATIC);
/* FALLTHROUGH */
case RTM_GET:
rtm->rtm_addrs |= RTA_DST;
}
#define NEXTADDR(w, s) \
if (rtm->rtm_addrs & (w)) { \
bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);}
NEXTADDR(RTA_DST, sin_m);
NEXTADDR(RTA_GATEWAY, sdl_m);
NEXTADDR(RTA_NETMASK, so_mask);
rtm->rtm_msglen = cp - (char *)&m_rtmsg;
doit:
l = rtm->rtm_msglen;
rtm->rtm_seq = ++seq;
rtm->rtm_type = cmd;
if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
if (errno != ESRCH || cmd != RTM_DELETE) {
perror("writing to routing socket");
return (-1);
}
}
do {
l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
if (l < 0)
(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
strerror(errno));
return (0);
}
void
ifinfo(ifname)
char *ifname;
{
struct in6_ndireq nd;
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("ndp: socket");
exit(1);
}
bzero(&nd, sizeof(nd));
strcpy(nd.ifname, ifname);
if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
perror("ioctl (SIOCGIFINFO_IN6)");
exit(1);
}
#define ND nd.ndi
printf("linkmtu=%d", ND.linkmtu);
printf(", curhlim=%d", ND.chlim);
printf(", basereachable=%ds%dms",
ND.basereachable / 1000, ND.basereachable % 1000);
printf(", reachable=%ds", ND.reachable);
printf(", retrans=%ds%dms\n", ND.retrans / 1000, ND.retrans % 1000);
#undef ND
close(s);
}
void
rtrlist()
{
struct in6_drlist dr;
int s, i;
struct timeval time;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("ndp: socket");
exit(1);
}
bzero(&dr, sizeof(dr));
strcpy(dr.ifname, "lo0"); /* dummy */
if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
perror("ioctl (SIOCGDRLST_IN6)");
exit(1);
}
#define DR dr.defrouter[i]
for (i = 0 ; DR.if_index && i < PRLSTSIZ ; i++) {
printf("%s if=%s", inet_ntop(AF_INET6, &DR.rtaddr,
ntop_buf, sizeof(ntop_buf)),
if_indextoname(DR.if_index, ifix_buf));
printf(", flags=%s%s",
DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
DR.flags & ND_RA_FLAG_OTHER ? "O" : "");
gettimeofday(&time, 0);
if (DR.expire == 0)
printf(", expire=Never\n");
else
printf(", expire=%s\n",
sec2str(DR.expire - time.tv_sec));
}
#undef DR
close(s);
}
void
plist()
{
struct in6_prlist pr;
int s, i;
struct timeval time;
gettimeofday(&time, 0);
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("ndp: socket");
exit(1);
}
bzero(&pr, sizeof(pr));
strcpy(pr.ifname, "lo0"); /* dummy */
if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
perror("ioctl (SIOCGPRLST_IN6)");
exit(1);
}
#define PR pr.prefix[i]
for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
printf("%s/%d if=%s\n",
inet_ntop(AF_INET6, &PR.prefix, ntop_buf,
sizeof(ntop_buf)), PR.prefixlen,
if_indextoname(PR.if_index, ifix_buf));
gettimeofday(&time, 0);
printf(" flags=%s%s",
PR.raflags.onlink ? "L" : "",
PR.raflags.autonomous ? "A" : "");
if (PR.vltime == ND6_INFINITE_LIFETIME)
printf(" vltime=infinity");
else
printf(" vltime=%ld", (long)PR.vltime);
if (PR.pltime == ND6_INFINITE_LIFETIME)
printf(", pltime=infinity");
else
printf(", pltime=%ld", (long)PR.pltime);
if (PR.expire == 0)
printf(", expire=Never\n");
else if (PR.expire >= time.tv_sec)
printf(", expire=%s\n",
sec2str(PR.expire - time.tv_sec));
else
printf(", expired\n");
if (PR.advrtrs) {
int j;
printf(" advertised by\n");
for (j = 0; j < PR.advrtrs; j++) {
printf(" %s\n",
inet_ntop(AF_INET6, &PR.advrtr[j],
ntop_buf,
sizeof(ntop_buf)));
}
if (PR.advrtrs > DRLSTSIZ)
printf(" and %d routers\n",
PR.advrtrs - DRLSTSIZ);
}
else
printf(" No advertising router\n");
}
#undef PR
close(s);
}
void
pfx_flush()
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
strcpy(dummyif, "lo0"); /* dummy */
if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
}
void
rtr_flush()
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
strcpy(dummyif, "lo0"); /* dummy */
if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
}
void
harmonize_rtr()
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("ndp: socket");
exit(1);
}
strcpy(dummyif, "lo0"); /* dummy */
if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) {
perror("ioctl (SIOCSNDFLUSH_IN6)");
exit(1);
}
}
void
quit(msg)
char *msg;
{
fprintf(stderr, "%s\n", msg);
exit(1);
}
static char *
sec2str(total)
time_t total;
{
static char result[256];
int days, hours, mins, secs;
int first = 1;
char *p = result;
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);
return(result);
}
/*
* Print the timestamp
* from tcpdump/util.c
*/
static void
ts_print(tvp)
const struct timeval *tvp;
{
int s;
/* Default */
s = (tvp->tv_sec + thiszone) % 86400;
(void)printf("%02d:%02d:%02d.%06u ",
s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
}