freebsd-dev/usr.sbin/ndp/ndp.c
Qing Li 8eca593c5a This checkin addresses a couple of issues:
1. The "route" command allows route insertion through the interface-direct
   option "-iface". During if_attach(), an sockaddr_dl{} entry is created
   for the interface and is part of the interface address list. This
   sockaddr_dl{} entry describes the interface in detail. The "route"
   command selects this entry as the "gateway" object when the "-iface"
   option is present. The "arp" and "ndp" commands also interact with the
   kernel through the routing socket when adding and removing static L2
   entries. The static L2 information is also provided through the
   "gateway" object with an AF_LINK family type, similar to what is
   provided by the "route" command. In order to differentiate between
   these two types of operations, a RTF_LLDATA flag is introduced. This
   flag is set by the "arp" and "ndp" commands when issuing the add and
   delete commands. This flag is also set in each L2 entry returned by the
   kernel. The "arp" and "ndp" command follows a convention where a RTM_GET
   is issued first followed by a RTM_ADD/DELETE. This RTM_GET request fills
   in the fields for a "rtm" object, which is reinjected into the kernel by
   a subsequent RTM_ADD/DELETE command. The entry returend from RTM_GET
   is a prefix route, so the RTF_LLDATA flag must be specified when issuing
   the RTM_ADD/DELETE messages.

2. Enforce the convention that NET_RT_FLAGS with a 0 w_arg is the
   specification for retrieving L2 information. Also optimized the
   code logic.

Reviewed by:   julian
2008-12-26 19:45:24 +00:00

1632 lines
38 KiB
C

/* $FreeBSD$ */
/* $KAME: ndp.c,v 1.104 2003/06/27 07:48:39 itojun Exp $ */
/*
* 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.
* 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 <sys/queue.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#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"
/* packing rule for routing socket */
#define ROUNDUP(a) \
((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
#define NEXTADDR(w, s) \
if (rtm->rtm_addrs & (w)) { \
bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);}
static pid_t pid;
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 host_buf[NI_MAXHOST]; /* getnameinfo() */
char ifix_buf[IFNAMSIZ]; /* if_indextoname() */
int main(int, char **);
int file(char *);
void getsocket(void);
int set(int, char **);
void get(char *);
int delete(char *);
void dump(struct in6_addr *, int);
static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int);
static char *ether_str(struct sockaddr_dl *);
int ndp_ether_aton(char *, u_char *);
void usage(void);
int rtmsg(int);
void ifinfo(char *, int, char **);
void rtrlist(void);
void plist(void);
void pfx_flush(void);
void rtr_flush(void);
void harmonize_rtr(void);
#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
static void getdefif(void);
static void setdefif(char *);
#endif
static char *sec2str(time_t);
static char *ether_str(struct sockaddr_dl *);
static void ts_print(const struct timeval *);
#ifdef ICMPV6CTL_ND6_DRLIST
static char *rtpref_str[] = {
"medium", /* 00 */
"high", /* 01 */
"rsv", /* 10 */
"low" /* 11 */
};
#endif
int mode = 0;
char *arg = NULL;
int
main(argc, argv)
int argc;
char **argv;
{
int ch;
pid = getpid();
thiszone = gmt2local(0);
while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
switch (ch) {
case 'a':
case 'c':
case 'p':
case 'r':
case 'H':
case 'P':
case 'R':
case 's':
case 'I':
if (mode) {
usage();
/*NOTREACHED*/
}
mode = ch;
arg = NULL;
break;
case 'd':
case 'f':
case 'i' :
if (mode) {
usage();
/*NOTREACHED*/
}
mode = ch;
arg = optarg;
break;
case 'n':
nflag = 1;
break;
case 't':
tflag = 1;
break;
case 'A':
if (mode) {
usage();
/*NOTREACHED*/
}
mode = 'a';
repeat = atoi(optarg);
if (repeat < 0) {
usage();
/*NOTREACHED*/
}
break;
default:
usage();
}
argc -= optind;
argv += optind;
switch (mode) {
case 'a':
case 'c':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
dump(0, mode == 'c');
break;
case 'd':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
delete(arg);
break;
case 'I':
#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
if (argc > 1) {
usage();
/*NOTREACHED*/
} else if (argc == 1) {
if (strcmp(*argv, "delete") == 0 ||
if_nametoindex(*argv))
setdefif(*argv);
else
errx(1, "invalid interface %s", *argv);
}
getdefif(); /* always call it to print the result */
break;
#else
errx(1, "not supported yet");
/*NOTREACHED*/
#endif
case 'p':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
plist();
break;
case 'i':
ifinfo(arg, argc, argv);
break;
case 'r':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
rtrlist();
break;
case 's':
if (argc < 2 || argc > 4)
usage();
exit(set(argc, argv) ? 1 : 0);
case 'H':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
harmonize_rtr();
break;
case 'P':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
pfx_flush();
break;
case 'R':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
rtr_flush();
break;
case 0:
if (argc != 1) {
usage();
/*NOTREACHED*/
}
get(argv[0]);
break;
}
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, sizeof(line), fp) != NULL) {
i = sscanf(line, "%49s %49s %49s %49s %49s",
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) {
err(1, "socket");
/* NOTREACHED */
}
}
}
struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
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;
#ifdef __KAME__
if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
}
#endif
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;
} else if (strncmp(argv[0], "proxy", 5) == 0)
flags |= RTF_ANNOUNCE;
argv++;
}
if (rtmsg(RTM_GET) < 0) {
errx(1, "RTM_GET(%s) failed", host);
/* NOTREACHED */
}
sin = (struct sockaddr_in6 *)(rtm + 1);
sdl = (struct sockaddr_dl *)(ROUNDUP(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_GATEWAY)) {
switch (sdl->sdl_type) {
case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
case IFT_ISO88024: case IFT_ISO88025:
goto overwrite;
}
}
/*
* IPv4 arp command retries with sin_other = SIN_PROXY here.
*/
fprintf(stderr, "set: cannot configure a new entry\n");
return 1;
}
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;
#ifdef __KAME__
if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
}
#endif
dump(&sin->sin6_addr, 0);
if (found_entry == 0) {
getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
sizeof(host_buf), NULL ,0,
(nflag ? NI_NUMERICHOST : 0));
printf("%s (%s) -- no entry\n", host, host_buf);
exit(1);
}
}
/*
* Delete a neighbor cache entry
*/
int
delete(host)
char *host;
{
struct sockaddr_in6 *sin = &sin_m;
register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
register char *cp = m_rtmsg.m_space;
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;
#ifdef __KAME__
if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
}
#endif
if (rtmsg(RTM_GET) < 0) {
errx(1, "RTM_GET(%s) failed", host);
/* NOTREACHED */
}
sin = (struct sockaddr_in6 *)(rtm + 1);
sdl = (struct sockaddr_dl *)(ROUNDUP(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_GATEWAY)) {
goto delete;
}
/*
* IPv4 arp command retries with sin_other = SIN_PROXY here.
*/
fprintf(stderr, "delete: cannot delete non-NDP entry\n");
return 1;
}
delete:
if (sdl->sdl_family != AF_LINK) {
printf("cannot locate %s\n", host);
return (1);
}
/*
* need to reinit the field because it has rt_key
* but we want the actual address
*/
NEXTADDR(RTA_DST, sin_m);
rtm->rtm_flags |= RTF_LLDATA;
if (rtmsg(RTM_DELETE) == 0) {
struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
#ifdef __KAME__
if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
*(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
}
#endif
getnameinfo((struct sockaddr *)&s6,
s6.sin6_len, host_buf,
sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0));
printf("%s (%s) deleted\n", host, host_buf);
}
return 0;
}
#define W_ADDR 36
#define W_LL 17
#define W_IF 6
/*
* Dump the entire neighbor cache
*/
void
dump(addr, cflag)
struct in6_addr *addr;
int cflag;
{
int mib[6];
size_t needed;
char *lim, *buf, *next;
struct rt_msghdr *rtm;
struct sockaddr_in6 *sin;
struct sockaddr_dl *sdl;
extern int h_errno;
struct in6_nbrinfo *nbi;
struct timeval time;
int addrwidth;
int llwidth;
int ifwidth;
char flgbuf[8];
char *ifname;
/* Print header */
if (!tflag && !cflag)
printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
W_IF, W_IF, "Netif", "Expire", "S", "Flags");
again:;
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = AF_INET6;
mib[4] = NET_RT_FLAGS;
#ifdef RTF_LLINFO
mib[5] = RTF_LLINFO;
#else
mib[5] = 0;
#endif
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
err(1, "sysctl(PF_ROUTE estimate)");
if (needed > 0) {
if ((buf = malloc(needed)) == NULL)
err(1, "malloc");
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
lim = buf + needed;
} else
buf = lim = NULL;
for (next = buf; next && 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 *)((char *)sin + ROUNDUP(sin->sin6_len));
/*
* Some OSes can produce a route that has the LINK flag but
* has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
* and BSD/OS, where xx is not the interface identifier on
* lo0). Such routes entry would annoy getnbrinfo() below,
* so we skip them.
* XXX: such routes should have the GATEWAY flag, not the
* LINK flag. However, there is rotten routing software
* that advertises all routes that have the GATEWAY flag.
* Thus, KAME kernel intentionally does not set the LINK flag.
* What is to be fixed is not ndp, but such routing software
* (and the kernel workaround)...
*/
if (sdl->sdl_family != AF_LINK)
continue;
if (!(rtm->rtm_flags & RTF_HOST))
continue;
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 (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
/* XXX: should scope id be filled in the kernel? */
if (sin->sin6_scope_id == 0)
sin->sin6_scope_id = sdl->sdl_index;
#ifdef __KAME__
/* KAME specific hack; removed the embedded id */
*(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
#endif
}
getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
if (cflag) {
#ifdef RTF_WASCLONED
if (rtm->rtm_flags & RTF_WASCLONED)
delete(host_buf);
#elif defined(RTF_CLONED)
if (rtm->rtm_flags & RTF_CLONED)
delete(host_buf);
#else
delete(host_buf);
#endif
continue;
}
gettimeofday(&time, 0);
if (tflag)
ts_print(&time);
addrwidth = strlen(host_buf);
if (addrwidth < W_ADDR)
addrwidth = W_ADDR;
llwidth = strlen(ether_str(sdl));
if (W_ADDR + W_LL - addrwidth > llwidth)
llwidth = W_ADDR + W_LL - addrwidth;
ifname = if_indextoname(sdl->sdl_index, ifix_buf);
if (!ifname)
ifname = "?";
ifwidth = strlen(ifname);
if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
/* Print neighbor discovery specific informations */
nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
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;
#ifdef ND6_LLINFO_WAITDELETE
case ND6_LLINFO_WAITDELETE:
printf(" W");
break;
#endif
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. R: router, P: proxy, W: ??
*/
if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
snprintf(flgbuf, sizeof(flgbuf), "%s%s",
isrouter ? "R" : "",
(rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
} else {
sin = (struct sockaddr_in6 *)
(sdl->sdl_len + (char *)sdl);
#if 0 /* W and P are mystery even for us */
snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
isrouter ? "R" : "",
!IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
(sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
(rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
#else
snprintf(flgbuf, sizeof(flgbuf), "%s%s",
isrouter ? "R" : "",
(rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
#endif
}
printf(" %s", flgbuf);
if (prbs)
printf(" %d", prbs);
printf("\n");
}
if (buf != NULL)
free(buf);
if (repeat) {
printf("\n");
fflush(stdout);
sleep(repeat);
goto again;
}
}
static struct in6_nbrinfo *
getnbrinfo(addr, ifindex, warning)
struct in6_addr *addr;
int ifindex;
int warning;
{
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) {
if (warning)
warn("ioctl(SIOCGNBRINFO_IN6)");
close(s);
return(NULL);
}
close(s);
return(&nbi);
}
static char *
ether_str(sdl)
struct sockaddr_dl *sdl;
{
static char hbuf[NI_MAXHOST];
u_char *cp;
if (sdl->sdl_alen) {
cp = (u_char *)LLADDR(sdl);
snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x",
cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
} else
snprintf(hbuf, sizeof(hbuf), "(incomplete)");
return(hbuf);
}
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 [-nt] hostname\n");
printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
printf(" ndp [-nt] -A wait\n");
printf(" ndp [-nt] -d hostname\n");
printf(" ndp [-nt] -f filename\n");
printf(" ndp [-nt] -i interface [flags...]\n");
#ifdef SIOCSDEFIFACE_IN6
printf(" ndp [-nt] -I [interface|delete]\n");
#endif
printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\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;
if (expire_time) {
rtm->rtm_rmx.rmx_expire = expire_time;
rtm->rtm_inits = RTV_EXPIRE;
}
rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
#if 0 /* we don't support ipv6addr/128 type proxying */
if (rtm->rtm_flags & RTF_ANNOUNCE) {
rtm->rtm_flags &= ~RTF_HOST;
rtm->rtm_addrs |= RTA_NETMASK;
}
#endif
/* FALLTHROUGH */
case RTM_GET:
rtm->rtm_addrs |= RTA_DST;
}
NEXTADDR(RTA_DST, sin_m);
NEXTADDR(RTA_GATEWAY, sdl_m);
#if 0 /* we don't support ipv6addr/128 type proxying */
memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
NEXTADDR(RTA_NETMASK, so_mask);
#endif
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) {
err(1, "writing to routing socket");
/* NOTREACHED */
}
}
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, argc, argv)
char *ifname;
int argc;
char **argv;
{
struct in6_ndireq nd;
int i, s;
u_int32_t newflags;
#ifdef IPV6CTL_USETEMPADDR
u_int8_t nullbuf[8];
#endif
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/* NOTREACHED */
}
bzero(&nd, sizeof(nd));
strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
err(1, "ioctl(SIOCGIFINFO_IN6)");
/* NOTREACHED */
}
#define ND nd.ndi
newflags = ND.flags;
for (i = 0; i < argc; i++) {
int clear = 0;
char *cp = argv[i];
if (*cp == '-') {
clear = 1;
cp++;
}
#define SETFLAG(s, f) \
do {\
if (strcmp(cp, (s)) == 0) {\
if (clear)\
newflags &= ~(f);\
else\
newflags |= (f);\
}\
} while (0)
/*
* XXX: this macro is not 100% correct, in that it matches "nud" against
* "nudbogus". But we just let it go since this is minor.
*/
#define SETVALUE(f, v) \
do { \
char *valptr; \
unsigned long newval; \
v = 0; /* unspecified */ \
if (strncmp(cp, f, strlen(f)) == 0) { \
valptr = strchr(cp, '='); \
if (valptr == NULL) \
err(1, "syntax error in %s field", (f)); \
errno = 0; \
newval = strtoul(++valptr, NULL, 0); \
if (errno) \
err(1, "syntax error in %s's value", (f)); \
v = newval; \
} \
} while (0)
SETFLAG("disabled", ND6_IFF_IFDISABLED);
SETFLAG("nud", ND6_IFF_PERFORMNUD);
#ifdef ND6_IFF_ACCEPT_RTADV
SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
#endif
#ifdef ND6_IFF_PREFER_SOURCE
SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
#endif
SETVALUE("basereachable", ND.basereachable);
SETVALUE("retrans", ND.retrans);
SETVALUE("curhlim", ND.chlim);
ND.flags = newflags;
if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
err(1, "ioctl(SIOCSIFINFO_IN6)");
/* NOTREACHED */
}
#undef SETFLAG
#undef SETVALUE
}
if (!ND.initialized) {
errx(1, "%s: not initialized yet", ifname);
/* NOTREACHED */
}
if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
err(1, "ioctl(SIOCGIFINFO_IN6)");
/* NOTREACHED */
}
printf("linkmtu=%d", ND.linkmtu);
printf(", maxmtu=%d", ND.maxmtu);
printf(", curhlim=%d", ND.chlim);
printf(", basereachable=%ds%dms",
ND.basereachable / 1000, ND.basereachable % 1000);
printf(", reachable=%ds", ND.reachable);
printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
#ifdef IPV6CTL_USETEMPADDR
memset(nullbuf, 0, sizeof(nullbuf));
if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
int j;
u_int8_t *rbuf;
for (i = 0; i < 3; i++) {
switch (i) {
case 0:
printf("\nRandom seed(0): ");
rbuf = ND.randomseed0;
break;
case 1:
printf("\nRandom seed(1): ");
rbuf = ND.randomseed1;
break;
case 2:
printf("\nRandom ID: ");
rbuf = ND.randomid;
break;
default:
errx(1, "impossible case for tempaddr display");
}
for (j = 0; j < 8; j++)
printf("%02x", rbuf[j]);
}
}
#endif
if (ND.flags) {
printf("\nFlags: ");
#ifdef ND6_IFF_IFDISABLED
if ((ND.flags & ND6_IFF_IFDISABLED))
printf("disabled ");
#endif
if ((ND.flags & ND6_IFF_PERFORMNUD))
printf("nud ");
#ifdef ND6_IFF_ACCEPT_RTADV
if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
printf("accept_rtadv ");
#endif
#ifdef ND6_IFF_PREFER_SOURCE
if ((ND.flags & ND6_IFF_PREFER_SOURCE))
printf("prefer_source ");
#endif
}
putc('\n', stdout);
#undef ND
close(s);
}
#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */
#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
#endif
void
rtrlist()
{
#ifdef ICMPV6CTL_ND6_DRLIST
int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
char *buf;
struct in6_defrouter *p, *ep;
size_t l;
struct timeval time;
if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
/*NOTREACHED*/
}
if (l == 0)
return;
buf = malloc(l);
if (!buf) {
err(1, "malloc");
/*NOTREACHED*/
}
if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
/*NOTREACHED*/
}
ep = (struct in6_defrouter *)(buf + l);
for (p = (struct in6_defrouter *)buf; p < ep; p++) {
int rtpref;
if (getnameinfo((struct sockaddr *)&p->rtaddr,
p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0)) != 0)
strlcpy(host_buf, "?", sizeof(host_buf));
printf("%s if=%s", host_buf,
if_indextoname(p->if_index, ifix_buf));
printf(", flags=%s%s",
p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
p->flags & ND_RA_FLAG_OTHER ? "O" : "");
rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
printf(", pref=%s", rtpref_str[rtpref]);
gettimeofday(&time, 0);
if (p->expire == 0)
printf(", expire=Never\n");
else
printf(", expire=%s\n",
sec2str(p->expire - time.tv_sec));
}
free(buf);
#else
struct in6_drlist dr;
int s, i;
struct timeval time;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/* NOTREACHED */
}
bzero(&dr, sizeof(dr));
strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
err(1, "ioctl(SIOCGDRLST_IN6)");
/* NOTREACHED */
}
#define DR dr.defrouter[i]
for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
struct sockaddr_in6 sin6;
bzero(&sin6, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(sin6);
sin6.sin6_addr = DR.rtaddr;
getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0));
printf("%s if=%s", host_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);
#endif
}
void
plist()
{
#ifdef ICMPV6CTL_ND6_PRLIST
int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
char *buf;
struct in6_prefix *p, *ep, *n;
struct sockaddr_in6 *advrtr;
size_t l;
struct timeval time;
const int niflags = NI_NUMERICHOST;
int ninflags = nflag ? NI_NUMERICHOST : 0;
char namebuf[NI_MAXHOST];
if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
/*NOTREACHED*/
}
buf = malloc(l);
if (!buf) {
err(1, "malloc");
/*NOTREACHED*/
}
if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
/*NOTREACHED*/
}
ep = (struct in6_prefix *)(buf + l);
for (p = (struct in6_prefix *)buf; p < ep; p = n) {
advrtr = (struct sockaddr_in6 *)(p + 1);
n = (struct in6_prefix *)&advrtr[p->advrtrs];
if (getnameinfo((struct sockaddr *)&p->prefix,
p->prefix.sin6_len, namebuf, sizeof(namebuf),
NULL, 0, niflags) != 0)
strlcpy(namebuf, "?", sizeof(namebuf));
printf("%s/%d if=%s\n", namebuf, p->prefixlen,
if_indextoname(p->if_index, ifix_buf));
gettimeofday(&time, 0);
/*
* meaning of fields, especially flags, is very different
* by origin. notify the difference to the users.
*/
printf("flags=%s%s%s%s%s",
p->raflags.onlink ? "L" : "",
p->raflags.autonomous ? "A" : "",
(p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
(p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
#ifdef NDPRF_HOME
(p->flags & NDPRF_HOME) != 0 ? "H" : ""
#else
""
#endif
);
if (p->vltime == ND6_INFINITE_LIFETIME)
printf(" vltime=infinity");
else
printf(" vltime=%lu", (unsigned long)p->vltime);
if (p->pltime == ND6_INFINITE_LIFETIME)
printf(", pltime=infinity");
else
printf(", pltime=%lu", (unsigned long)p->pltime);
if (p->expire == 0)
printf(", expire=Never");
else if (p->expire >= time.tv_sec)
printf(", expire=%s",
sec2str(p->expire - time.tv_sec));
else
printf(", expired");
printf(", ref=%d", p->refcnt);
printf("\n");
/*
* "advertising router" list is meaningful only if the prefix
* information is from RA.
*/
if (p->advrtrs) {
int j;
struct sockaddr_in6 *sin6;
sin6 = advrtr;
printf(" advertised by\n");
for (j = 0; j < p->advrtrs; j++) {
struct in6_nbrinfo *nbi;
if (getnameinfo((struct sockaddr *)sin6,
sin6->sin6_len, namebuf, sizeof(namebuf),
NULL, 0, ninflags) != 0)
strlcpy(namebuf, "?", sizeof(namebuf));
printf(" %s", namebuf);
nbi = getnbrinfo(&sin6->sin6_addr,
p->if_index, 0);
if (nbi) {
switch (nbi->state) {
case ND6_LLINFO_REACHABLE:
case ND6_LLINFO_STALE:
case ND6_LLINFO_DELAY:
case ND6_LLINFO_PROBE:
printf(" (reachable)\n");
break;
default:
printf(" (unreachable)\n");
}
} else
printf(" (no neighbor state)\n");
sin6++;
}
} else
printf(" No advertising router\n");
}
free(buf);
#else
struct in6_prlist pr;
int s, i;
struct timeval time;
gettimeofday(&time, 0);
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/* NOTREACHED */
}
bzero(&pr, sizeof(pr));
strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
err(1, "ioctl(SIOCGPRLST_IN6)");
/* NOTREACHED */
}
#define PR pr.prefix[i]
for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
struct sockaddr_in6 p6;
char namebuf[NI_MAXHOST];
int niflags;
#ifdef NDPRF_ONLINK
p6 = PR.prefix;
#else
memset(&p6, 0, sizeof(p6));
p6.sin6_family = AF_INET6;
p6.sin6_len = sizeof(p6);
p6.sin6_addr = PR.prefix;
#endif
/*
* copy link index to sin6_scope_id field.
* XXX: KAME specific.
*/
if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
u_int16_t linkid;
memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
sizeof(linkid));
linkid = ntohs(linkid);
p6.sin6_scope_id = linkid;
p6.sin6_addr.s6_addr[2] = 0;
p6.sin6_addr.s6_addr[3] = 0;
}
niflags = NI_NUMERICHOST;
if (getnameinfo((struct sockaddr *)&p6,
sizeof(p6), namebuf, sizeof(namebuf),
NULL, 0, niflags)) {
warnx("getnameinfo failed");
continue;
}
printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
if_indextoname(PR.if_index, ifix_buf));
gettimeofday(&time, 0);
/*
* meaning of fields, especially flags, is very different
* by origin. notify the difference to the users.
*/
#if 0
printf(" %s",
PR.origin == PR_ORIG_RA ? "" : "advertise: ");
#endif
#ifdef NDPRF_ONLINK
printf("flags=%s%s%s%s%s",
PR.raflags.onlink ? "L" : "",
PR.raflags.autonomous ? "A" : "",
(PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
(PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
#ifdef NDPRF_HOME
(PR.flags & NDPRF_HOME) != 0 ? "H" : ""
#else
""
#endif
);
#else
printf("flags=%s%s",
PR.raflags.onlink ? "L" : "",
PR.raflags.autonomous ? "A" : "");
#endif
if (PR.vltime == ND6_INFINITE_LIFETIME)
printf(" vltime=infinity");
else
printf(" vltime=%lu", PR.vltime);
if (PR.pltime == ND6_INFINITE_LIFETIME)
printf(", pltime=infinity");
else
printf(", pltime=%lu", PR.pltime);
if (PR.expire == 0)
printf(", expire=Never");
else if (PR.expire >= time.tv_sec)
printf(", expire=%s",
sec2str(PR.expire - time.tv_sec));
else
printf(", expired");
#ifdef NDPRF_ONLINK
printf(", ref=%d", PR.refcnt);
#endif
#if 0
switch (PR.origin) {
case PR_ORIG_RA:
printf(", origin=RA");
break;
case PR_ORIG_RR:
printf(", origin=RR");
break;
case PR_ORIG_STATIC:
printf(", origin=static");
break;
case PR_ORIG_KERNEL:
printf(", origin=kernel");
break;
default:
printf(", origin=?");
break;
}
#endif
printf("\n");
/*
* "advertising router" list is meaningful only if the prefix
* information is from RA.
*/
if (0 && /* prefix origin is almost obsolted */
PR.origin != PR_ORIG_RA)
;
else if (PR.advrtrs) {
int j;
printf(" advertised by\n");
for (j = 0; j < PR.advrtrs; j++) {
struct sockaddr_in6 sin6;
struct in6_nbrinfo *nbi;
bzero(&sin6, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(sin6);
sin6.sin6_addr = PR.advrtr[j];
sin6.sin6_scope_id = PR.if_index; /* XXX */
getnameinfo((struct sockaddr *)&sin6,
sin6.sin6_len, host_buf,
sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0));
printf(" %s", host_buf);
nbi = getnbrinfo(&sin6.sin6_addr,
PR.if_index, 0);
if (nbi) {
switch (nbi->state) {
case ND6_LLINFO_REACHABLE:
case ND6_LLINFO_STALE:
case ND6_LLINFO_DELAY:
case ND6_LLINFO_PROBE:
printf(" (reachable)\n");
break;
default:
printf(" (unreachable)\n");
}
} else
printf(" (no neighbor state)\n");
}
if (PR.advrtrs > DRLSTSIZ)
printf(" and %d routers\n",
PR.advrtrs - DRLSTSIZ);
} else
printf(" No advertising router\n");
}
#undef PR
close(s);
#endif
}
void
pfx_flush()
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
strlcpy(dummyif, "lo0", sizeof(dummyif)); /* 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");
strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
close(s);
}
void
harmonize_rtr()
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
err(1, "ioctl(SIOCSNDFLUSH_IN6)");
close(s);
}
#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
static void
setdefif(ifname)
char *ifname;
{
struct in6_ndifreq ndifreq;
unsigned int ifindex;
if (strcasecmp(ifname, "delete") == 0)
ifindex = 0;
else {
if ((ifindex = if_nametoindex(ifname)) == 0)
err(1, "failed to resolve i/f index for %s", ifname);
}
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
ndifreq.ifindex = ifindex;
if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
err(1, "ioctl(SIOCSDEFIFACE_IN6)");
close(s);
}
static void
getdefif()
{
struct in6_ndifreq ndifreq;
char ifname[IFNAMSIZ+8];
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
memset(&ndifreq, 0, sizeof(ndifreq));
strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
err(1, "ioctl(SIOCGDEFIFACE_IN6)");
if (ndifreq.ifindex == 0)
printf("No default interface.\n");
else {
if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
err(1, "failed to resolve ifname for index %lu",
ndifreq.ifindex);
printf("ND default interface = %s\n", ifname);
}
close(s);
}
#endif
static char *
sec2str(total)
time_t total;
{
static char result[256];
int days, hours, mins, secs;
int first = 1;
char *p = result;
char *ep = &result[sizeof(result)];
int n;
days = total / 3600 / 24;
hours = (total / 3600) % 24;
mins = (total / 60) % 60;
secs = total % 60;
if (days) {
first = 0;
n = snprintf(p, ep - p, "%dd", days);
if (n < 0 || n >= ep - p)
return "?";
p += n;
}
if (!first || hours) {
first = 0;
n = snprintf(p, ep - p, "%dh", hours);
if (n < 0 || n >= ep - p)
return "?";
p += n;
}
if (!first || mins) {
first = 0;
n = snprintf(p, ep - p, "%dm", mins);
if (n < 0 || n >= ep - p)
return "?";
p += n;
}
snprintf(p, ep - 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);
}
#undef NEXTADDR