oneechanhax/phunix
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
phunix/usr.sbin/ndp/ndp.c
David van Moolenbroek 5de448e315 Import NetBSD ndp(8) 
Like arp(8), this utility already uses the NetBSD 8 protocol for
talking to the operating system through routing sockets.

Like arp(8), this utility is not fully functional, due to limitations
of lwIP.  While ndp(8) should provide a proper (read-only) view of the
contents of the Neighbor Discovery table, any attempts to modify the
table will fail.  In addition, various other ndp(8) features are not
supported.  On MINIX 3, the prefix and default router lists are not
managed by the operating system however, but rather by dhcpcd(8);
therefore, an implementation of the features related to those lists
would not provide any actual functionality.

Change-Id: I479bfc8141ba69fe50c1b2f7091933267ce6fa3e
2017-03-21 22:00:25 +00:00

1557 lines
39 KiB
C
Raw Permalink Blame History

/* $NetBSD: ndp.c,v 1.45 2015/08/03 09:51:40 ozaki-r Exp $ */
/* $KAME: ndp.c,v 1.121 2005/07/13 11:30:13 keiichi 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.
* 3. 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>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.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"
#include "prog_ops.h"
static pid_t pid;
static int nflag;
static int tflag;
static int32_t thiszone; /* time difference with gmt */
static int my_s = -1;
static unsigned int repeat = 0;
static char host_buf[NI_MAXHOST]; /* getnameinfo() */
static char ifix_buf[IFNAMSIZ]; /* if_indextoname() */
static void getsocket(void);
static int set(int, char **);
static void get(char *);
static int delete(char *);
static void dump(struct in6_addr *, int);
static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, unsigned int, int);
static char *ether_str(struct sockaddr_dl *);
static int ndp_ether_aton(char *, u_char *);
__dead static void usage(void);
static int rtmsg(int);
static void ifinfo(char *, int, char **);
static void rtrlist(void);
static void plist(void);
static void pfx_flush(void);
static void rtrlist(void);
static void rtr_flush(void);
static void harmonize_rtr(void);
#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
static void getdefif(void);
static void setdefif(char *);
#endif
static const char *sec2str(time_t);
static char *ether_str(struct sockaddr_dl *);
static void ts_print(const struct timeval *);
#ifdef ICMPV6CTL_ND6_DRLIST
static const char *rtpref_str[] = {
"medium", /* 00 */
"high", /* 01 */
"rsv", /* 10 */
"low" /* 11 */
};
#endif
static int mode = 0;
static char *arg = NULL;
int
main(int argc, char **argv)
{
int ch;
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);
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (prog_init && prog_init() == -1)
err(1, "init failed");
pid = prog_getpid();
thiszone = gmt2local(0L);
switch (mode) {
case 'a':
case 'c':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
dump(0, mode == 'c');
break;
case 'd':
if (argc != 0) {
usage();
/*NOTREACHED*/
}
(void)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();
return(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;
}
return(0);
}
static void
getsocket(void)
{
if (my_s < 0) {
my_s = prog_socket(PF_ROUTE, SOCK_RAW, 0);
if (my_s < 0)
err(1, "socket");
}
}
#ifdef notdef
static struct sockaddr_in6 so_mask = {
.sin6_len = sizeof(so_mask),
.sin6_family = AF_INET6
};
#endif
static struct sockaddr_in6 blank_sin = {
.sin6_len = sizeof(blank_sin),
.sin6_family = AF_INET6
};
static struct sockaddr_in6 sin_m;
static struct sockaddr_dl blank_sdl = {
.sdl_len = sizeof(blank_sdl),
.sdl_family = AF_LINK,
};
static struct sockaddr_dl sdl_m;
static int expire_time, flags, found_entry;
static struct {
struct rt_msghdr m_rtm;
char m_space[512];
} m_rtmsg;
/*
* Set an individual neighbor cache entry
*/
static int
set(int argc, char **argv)
{
register struct sockaddr_in6 *mysin = &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;
(void)memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
gai_error = getaddrinfo(host, NULL, &hints, &res);
if (gai_error) {
warnx("%s: %s", host, gai_strerror(gai_error));
return 1;
}
mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr;
inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL);
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 tim;
(void)gettimeofday(&tim, 0);
expire_time = tim.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 */
}
mysin = (struct sockaddr_in6 *)(void *)(rtm + 1);
sdl = (struct sockaddr_dl *)(void *)(RT_ROUNDUP(mysin->sin6_len) + (char *)(void *)mysin);
if (IN6_ARE_ADDR_EQUAL(&mysin->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;
}
}
/*
* IPv4 arp command retries with sin_other = SIN_PROXY here.
*/
(void)fprintf(stderr, "set: cannot configure a new entry\n");
return 1;
}
overwrite:
if (sdl->sdl_family != AF_LINK) {
warnx("cannot intuit interface index and type for %s", 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
*/
static void
get(char *host)
{
struct sockaddr_in6 *mysin = &sin_m;
struct addrinfo hints, *res;
int gai_error;
sin_m = blank_sin;
(void)memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
gai_error = getaddrinfo(host, NULL, &hints, &res);
if (gai_error) {
warnx("%s: %s", host, gai_strerror(gai_error));
return;
}
mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr;
inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL);
dump(&mysin->sin6_addr, 0);
if (found_entry == 0) {
(void)getnameinfo((struct sockaddr *)(void *)mysin,
(socklen_t)mysin->sin6_len,
host_buf, sizeof(host_buf), NULL ,0,
(nflag ? NI_NUMERICHOST : 0));
errx(1, "%s (%s) -- no entry", host, host_buf);
}
}
/*
* Delete a neighbor cache entry
*/
static int
delete(char *host)
{
struct sockaddr_in6 *mysin = &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) {
warnx("%s: %s", host, gai_strerror(gai_error));
return 1;
}
mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr;
inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL);
if (rtmsg(RTM_GET) < 0)
errx(1, "RTM_GET(%s) failed", host);
mysin = (struct sockaddr_in6 *)(void *)(rtm + 1);
sdl = (struct sockaddr_dl *)(void *)(RT_ROUNDUP(mysin->sin6_len) +
(char *)(void *)mysin);
if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) {
if (sdl->sdl_family == AF_LINK &&
(rtm->rtm_flags & RTF_LLINFO) &&
!(rtm->rtm_flags & RTF_GATEWAY)) {
goto delete;
}
/*
* IPv4 arp command retries with sin_other = SIN_PROXY here.
*/
warnx("delete: cannot delete non-NDP entry");
return 1;
}
delete:
if (sdl->sdl_family != AF_LINK) {
(void)printf("cannot locate %s\n", host);
return (1);
}
if (rtmsg(RTM_DELETE) == 0) {
struct sockaddr_in6 s6 = *mysin; /* XXX: for safety */
mysin->sin6_scope_id = 0;
inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL);
(void)getnameinfo((struct sockaddr *)(void *)&s6,
(socklen_t)s6.sin6_len, host_buf,
sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0));
(void)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
*/
static void
dump(struct in6_addr *addr, int cflag)
{
int mib[6];
size_t needed;
char *lim, *buf, *next;
struct rt_msghdr *rtm;
struct sockaddr_in6 *mysin;
struct sockaddr_dl *sdl;
struct in6_nbrinfo *nbi;
struct timeval tim;
int addrwidth;
int llwidth;
int ifwidth;
char flgbuf[8];
const char *ifname;
/* Print header */
if (!tflag && !cflag)
(void)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;
mib[5] = RTF_LLINFO;
if (prog_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 (prog_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 *)(void *)next;
mysin = (struct sockaddr_in6 *)(void *)(rtm + 1);
sdl = (struct sockaddr_dl *)(void *)((char *)(void *)mysin + RT_ROUNDUP(mysin->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, &mysin->sin6_addr))
continue;
found_entry = 1;
} else if (IN6_IS_ADDR_MULTICAST(&mysin->sin6_addr))
continue;
if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr) ||
IN6_IS_ADDR_MC_LINKLOCAL(&mysin->sin6_addr)) {
uint16_t scopeid = mysin->sin6_scope_id;
inet6_getscopeid(mysin, INET6_IS_ADDR_LINKLOCAL|
INET6_IS_ADDR_MC_LINKLOCAL);
if (scopeid == 0)
mysin->sin6_scope_id = sdl->sdl_index;
}
(void)getnameinfo((struct sockaddr *)(void *)mysin,
(socklen_t)mysin->sin6_len,
host_buf, sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0));
if (cflag) {
#ifdef RTF_WASCLONED
if (rtm->rtm_flags & RTF_WASCLONED)
(void)delete(host_buf);
#elif defined(RTF_CLONED)
if (rtm->rtm_flags & RTF_CLONED)
(void)delete(host_buf);
#else
(void)delete(host_buf);
#endif
continue;
}
(void)gettimeofday(&tim, 0);
if (tflag)
ts_print(&tim);
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((unsigned int)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;
(void)printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth,
host_buf, llwidth, llwidth, ether_str(sdl), ifwidth,
ifwidth, ifname);
/* Print neighbor discovery specific informations */
nbi = getnbrinfo(&mysin->sin6_addr,
(unsigned int)sdl->sdl_index, 1);
if (nbi) {
if (nbi->expire > tim.tv_sec) {
(void)printf(" %-9.9s",
sec2str(nbi->expire - tim.tv_sec));
} else if (nbi->expire == 0)
(void)printf(" %-9.9s", "permanent");
else
(void)printf(" %-9.9s", "expired");
switch (nbi->state) {
case ND6_LLINFO_NOSTATE:
(void)printf(" N");
break;
#ifdef ND6_LLINFO_WAITDELETE
case ND6_LLINFO_WAITDELETE:
(void)printf(" W");
break;
#endif
case ND6_LLINFO_INCOMPLETE:
(void)printf(" I");
break;
case ND6_LLINFO_REACHABLE:
(void)printf(" R");
break;
case ND6_LLINFO_STALE:
(void)printf(" S");
break;
case ND6_LLINFO_DELAY:
(void)printf(" D");
break;
case ND6_LLINFO_PROBE:
(void)printf(" P");
break;
default:
(void)printf(" ?");
break;
}
isrouter = nbi->isrouter;
prbs = nbi->asked;
} else {
warnx("failed to get neighbor information");
(void)printf(" ");
}
/*
* other flags. R: router, P: proxy, W: ??
*/
if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
(void)snprintf(flgbuf, sizeof(flgbuf), "%s%s",
isrouter ? "R" : "",
(rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
} else {
mysin = (struct sockaddr_in6 *)(void *)
(sdl->sdl_len + (char *)(void *)sdl);
#if 0 /* W and P are mystery even for us */
(void)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
(void)snprintf(flgbuf, sizeof(flgbuf), "%s%s",
isrouter ? "R" : "",
(rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
#endif
}
(void)printf(" %s", flgbuf);
if (prbs)
(void)printf(" %d", prbs);
(void)printf("\n");
}
if (buf != NULL)
free(buf);
if (repeat) {
(void)printf("\n");
(void)fflush(stdout);
(void)sleep(repeat);
goto again;
}
}
static struct in6_nbrinfo *
getnbrinfo(struct in6_addr *addr, unsigned int ifindex, int warning)
{
static struct in6_nbrinfo nbi;
int s;
if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
(void)memset(&nbi, 0, sizeof(nbi));
(void)if_indextoname(ifindex, nbi.ifname);
nbi.addr = *addr;
if (prog_ioctl(s, SIOCGNBRINFO_IN6, &nbi) < 0) {
if (warning)
warn("ioctl(SIOCGNBRINFO_IN6)");
(void)prog_close(s);
return(NULL);
}
(void)prog_close(s);
return(&nbi);
}
static char *
ether_str(struct sockaddr_dl *sdl)
{
static char hbuf[NI_MAXHOST];
if (sdl->sdl_alen) {
if (getnameinfo((struct sockaddr *)(void *)sdl,
(socklen_t)sdl->sdl_len,
hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
(void)snprintf(hbuf, sizeof(hbuf), "<invalid>");
} else
(void)snprintf(hbuf, sizeof(hbuf), "(incomplete)");
return(hbuf);
}
static int
ndp_ether_aton(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) {
warnx("invalid Ethernet address '%s'", a);
return (1);
}
for (i = 0; i < 6; i++)
n[i] = o[i];
return (0);
}
static void
usage(void)
{
const char *pn = getprogname();
(void)fprintf(stderr, "Usage: %s [-nt] hostname\n", pn);
(void)fprintf(stderr,
" %s [-nt] -a | -c | -p | -r | -H | -P | -R\n", pn);
(void)fprintf(stderr, " %s [-nt] -A wait\n", pn);
(void)fprintf(stderr, " %s [-nt] -d hostname\n", pn);
(void)fprintf(stderr, " %s [-nt] -f filename\n", pn);
(void)fprintf(stderr, " %s [-nt] -i interface [flags...]\n", pn);
#ifdef SIOCSDEFIFACE_IN6
(void)fprintf(stderr, " %s [-nt] -I [interface|delete]\n", pn);
#endif
(void)fprintf(stderr,
" %s [-nt] -s nodename etheraddr [temp] [proxy]\n", pn);
exit(1);
}
static int
rtmsg(int cmd)
{
static int seq;
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;
(void)memset(&m_rtmsg, 0, sizeof(m_rtmsg));
rtm->rtm_flags = flags;
rtm->rtm_version = RTM_VERSION;
switch (cmd) {
default:
errx(1, "internal wrong cmd");
/*NOTREACHED*/
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);
#ifdef notdef /* 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;
}
#define NEXTADDR(w, s) \
if (rtm->rtm_addrs & (w)) { \
(void)memcpy(cp, &s, sizeof(s)); \
RT_ADVANCE(cp, (struct sockaddr *)(void *)&s); \
}
NEXTADDR(RTA_DST, sin_m);
NEXTADDR(RTA_GATEWAY, sdl_m);
#ifdef notdef /* we don't support ipv6addr/128 type proxying. */
(void)memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
NEXTADDR(RTA_NETMASK, so_mask);
#endif
rtm->rtm_msglen = cp - (char *)(void *)&m_rtmsg;
doit:
l = rtm->rtm_msglen;
rtm->rtm_seq = ++seq;
rtm->rtm_type = cmd;
#ifdef __minix
/*
* Borrow from the future by setting the "this is a link-local request"
* flag on all routing socket requests. IMPORTANT: this change may be
* dropped with the resync to NetBSD 8 as it will do the same thing,
* although slightly differently (and hence may not create a conflict).
*/
rtm->rtm_flags |= RTF_LLDATA;
#endif /* __minix */
if (prog_write(my_s, &m_rtmsg, (size_t)l) == -1) {
if (errno != ESRCH || cmd != RTM_DELETE)
err(1, "writing to routing socket");
}
do {
l = prog_read(my_s, &m_rtmsg, sizeof(m_rtmsg));
} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
if (l < 0)
warn("read from routing socket");
return (0);
}
static void
ifinfo(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 = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
(void)memset(&nd, 0, sizeof(nd));
(void)strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
if (prog_ioctl(s, SIOCGIFINFO_IN6, &nd) < 0)
err(1, "ioctl(SIOCGIFINFO_IN6)");
#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 (/*CONSTCOND*/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 (/*CONSTCOND*/0)
#ifdef ND6_IFF_IFDISABLED
SETFLAG("disabled", ND6_IFF_IFDISABLED);
#endif
SETFLAG("nud", ND6_IFF_PERFORMNUD);
#ifdef ND6_IFF_ACCEPT_RTADV
SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
#endif
#ifdef ND6_IFF_OVERRIDE_RTADV
SETFLAG("override_rtadv", ND6_IFF_OVERRIDE_RTADV);
#endif
#ifdef ND6_IFF_AUTO_LINKLOCAL
SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL);
#endif
#ifdef ND6_IFF_PREFER_SOURCE
SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
#endif
#ifdef ND6_IFF_DONT_SET_IFROUTE
SETFLAG("dont_set_ifroute", ND6_IFF_DONT_SET_IFROUTE);
#endif
SETVALUE("basereachable", ND.basereachable);
SETVALUE("retrans", ND.retrans);
SETVALUE("curhlim", ND.chlim);
ND.flags = newflags;
#ifdef SIOCSIFINFO_IN6
if (prog_ioctl(s, SIOCSIFINFO_IN6, &nd) < 0)
err(1, "ioctl(SIOCSIFINFO_IN6)");
#else
if (prog_ioctl(s, SIOCSIFINFO_FLAGS, &nd) < 0)
err(1, "ioctl(SIOCSIFINFO_FLAGS)");
#endif
#undef SETFLAG
#undef SETVALUE
}
if (!ND.initialized)
errx(1, "%s: not initialized yet", ifname);
if (prog_ioctl(s, SIOCGIFINFO_IN6, &nd) < 0)
err(1, "ioctl(SIOCGIFINFO_IN6)");
(void)printf("linkmtu=%d", ND.linkmtu);
(void)printf(", maxmtu=%d", ND.maxmtu);
(void)printf(", curhlim=%d", ND.chlim);
(void)printf(", basereachable=%ds%dms",
ND.basereachable / 1000, ND.basereachable % 1000);
(void)printf(", reachable=%ds", ND.reachable);
(void)printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
#ifdef IPV6CTL_USETEMPADDR
(void)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:
(void)printf("\nRandom seed(0): ");
rbuf = ND.randomseed0;
break;
case 1:
(void)printf("\nRandom seed(1): ");
rbuf = ND.randomseed1;
break;
case 2:
(void)printf("\nRandom ID: ");
rbuf = ND.randomid;
break;
default:
errx(1, "impossible case for tempaddr display");
}
for (j = 0; j < 8; j++)
(void)printf("%02x", rbuf[j]);
}
}
#endif
if (ND.flags) {
(void)printf("\nFlags: ");
if ((ND.flags & ND6_IFF_PERFORMNUD))
(void)printf("nud ");
#ifdef ND6_IFF_IFDISABLED
if ((ND.flags & ND6_IFF_IFDISABLED))
(void)printf("disabled ");
#endif
#ifdef ND6_IFF_ACCEPT_RTADV
if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
(void)printf("accept_rtadv ");
#endif
#ifdef ND6_IFF_OVERRIDE_RTADV
if ((ND.flags & ND6_IFF_OVERRIDE_RTADV))
(void)printf("override_rtadv ");
#endif
#ifdef ND6_IFF_AUTO_LINKLOCAL
if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL))
(void)printf("auto_linklocal ");
#endif
#ifdef ND6_IFF_PREFER_SOURCE
if ((ND.flags & ND6_IFF_PREFER_SOURCE))
(void)printf("prefer_source ");
#endif
}
(void)putc('\n', stdout);
#undef ND
(void)prog_close(s);
}
#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */
#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
#endif
static void
rtrlist(void)
{
#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 tim;
if (prog_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 (prog_sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
/*NOTREACHED*/
}
ep = (struct in6_defrouter *)(void *)(buf + l);
for (p = (struct in6_defrouter *)(void *)buf; p < ep; p++) {
int rtpref;
if (getnameinfo((struct sockaddr *)(void *)&p->rtaddr,
(socklen_t)p->rtaddr.sin6_len, host_buf, sizeof(host_buf),
NULL, 0, (nflag ? NI_NUMERICHOST : 0)) != 0)
(void)strlcpy(host_buf, "?", sizeof(host_buf));
(void)printf("%s if=%s", host_buf,
if_indextoname((unsigned int)p->if_index, ifix_buf));
(void)printf(", flags=%s%s",
p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
p->flags & ND_RA_FLAG_OTHER ? "O" : "");
rtpref = ((uint32_t)(p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
(void)printf(", pref=%s", rtpref_str[rtpref]);
(void)gettimeofday(&tim, 0);
if (p->expire == 0)
(void)printf(", expire=Never\n");
else
(void)printf(", expire=%s\n",
sec2str((time_t)(p->expire - tim.tv_sec)));
}
free(buf);
#else
struct in6_drlist dr;
int s, i;
struct timeval time;
if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/* NOTREACHED */
}
(void)memset(&dr, 0, sizeof(dr));
(void)strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
if (prog_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;
(void)memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(sin6);
sin6.sin6_addr = DR.rtaddr;
(void)getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
host_buf, sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0));
(void)printf("%s if=%s", host_buf,
if_indextoname(DR.if_index, ifix_buf));
(void)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)
(void)printf(", expire=Never\n");
else
(void)printf(", expire=%s\n",
sec2str(DR.expire - time.tv_sec));
}
#undef DR
(void)prog_close(s);
#endif
}
static void
plist(void)
{
#ifdef ICMPV6CTL_ND6_PRLIST
int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
char *buf, *p, *ep;
struct in6_prefix pfx;
size_t l;
struct timeval tim;
const int niflags = NI_NUMERICHOST;
int ninflags = nflag ? NI_NUMERICHOST : 0;
char namebuf[NI_MAXHOST];
if (prog_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 (prog_sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
/*NOTREACHED*/
}
ep = buf + l;
for (p = buf; p < ep; ) {
memcpy(&pfx, p, sizeof(pfx));
p += sizeof(pfx);
if (getnameinfo((struct sockaddr*)&pfx.prefix,
(socklen_t)pfx.prefix.sin6_len, namebuf, sizeof(namebuf),
NULL, 0, niflags) != 0)
(void)strlcpy(namebuf, "?", sizeof(namebuf));
(void)printf("%s/%d if=%s\n", namebuf, pfx.prefixlen,
if_indextoname((unsigned int)pfx.if_index, ifix_buf));
(void)gettimeofday(&tim, 0);
/*
* meaning of fields, especially flags, is very different
* by origin. notify the difference to the users.
*/
(void)printf("flags=%s%s%s%s%s",
pfx.raflags.onlink ? "L" : "",
pfx.raflags.autonomous ? "A" : "",
(pfx.flags & NDPRF_ONLINK) != 0 ? "O" : "",
(pfx.flags & NDPRF_DETACHED) != 0 ? "D" : "",
#ifdef NDPRF_HOME
(pfx.flags & NDPRF_HOME) != 0 ? "H" : ""
#else
""
#endif
);
if (pfx.vltime == ND6_INFINITE_LIFETIME)
(void)printf(" vltime=infinity");
else
(void)printf(" vltime=%lu", (unsigned long)pfx.vltime);
if (pfx.pltime == ND6_INFINITE_LIFETIME)
(void)printf(", pltime=infinity");
else
(void)printf(", pltime=%lu", (unsigned long)pfx.pltime);
if (pfx.expire == 0)
(void)printf(", expire=Never");
else if (pfx.expire >= tim.tv_sec)
(void)printf(", expire=%s",
sec2str(pfx.expire - tim.tv_sec));
else
(void)printf(", expired");
(void)printf(", ref=%d", pfx.refcnt);
(void)printf("\n");
/*
* "advertising router" list is meaningful only if the prefix
* information is from RA.
*/
if (pfx.advrtrs) {
int j;
struct sockaddr_in6 sin6;
(void)printf(" advertised by\n");
for (j = 0; j < pfx.advrtrs && p <= ep; j++) {
struct in6_nbrinfo *nbi;
memcpy(&sin6, p, sizeof(sin6));
p += sizeof(sin6);
if (getnameinfo((struct sockaddr *)&sin6,
(socklen_t)sin6.sin6_len, namebuf,
sizeof(namebuf), NULL, 0, ninflags) != 0)
(void)strlcpy(namebuf, "?", sizeof(namebuf));
(void)printf(" %s", namebuf);
nbi = getnbrinfo(&sin6.sin6_addr,
(unsigned int)pfx.if_index, 0);
if (nbi) {
switch (nbi->state) {
case ND6_LLINFO_REACHABLE:
case ND6_LLINFO_STALE:
case ND6_LLINFO_DELAY:
case ND6_LLINFO_PROBE:
(void)printf(" (reachable)\n");
break;
default:
(void)printf(" (unreachable)\n");
}
} else
(void)printf(" (no neighbor state)\n");
}
} else
(void)printf(" No advertising router\n");
}
free(buf);
#else
struct in6_prlist pr;
int s, i;
struct timeval time;
(void)gettimeofday(&time, 0);
if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/* NOTREACHED */
}
(void)memset(&pr, 0, sizeof(pr));
(void)strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
if (prog_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
(void)memset(&p6, 0, sizeof(p6));
p6.sin6_family = AF_INET6;
p6.sin6_len = sizeof(p6);
p6.sin6_addr = PR.prefix;
#endif
niflags = NI_NUMERICHOST;
if (getnameinfo((struct sockaddr *)&p6,
sizeof(p6), namebuf, sizeof(namebuf),
NULL, 0, niflags)) {
warnx("getnameinfo failed");
continue;
}
(void)printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
if_indextoname(PR.if_index, ifix_buf));
(void)gettimeofday(&time, 0);
/*
* meaning of fields, especially flags, is very different
* by origin. notify the difference to the users.
*/
#if 0
(void)printf(" %s",
PR.origin == PR_ORIG_RA ? "" : "advertise: ");
#endif
#ifdef NDPRF_ONLINK
(void)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
(void)printf("flags=%s%s",
PR.raflags.onlink ? "L" : "",
PR.raflags.autonomous ? "A" : "");
#endif
if (PR.vltime == ND6_INFINITE_LIFETIME)
(void)printf(" vltime=infinity");
else
(void)printf(" vltime=%lu", PR.vltime);
if (PR.pltime == ND6_INFINITE_LIFETIME)
(void)printf(", pltime=infinity");
else
(void)printf(", pltime=%lu", PR.pltime);
if (PR.expire == 0)
(void)printf(", expire=Never");
else if (PR.expire >= time.tv_sec)
(void)printf(", expire=%s",
sec2str(PR.expire - time.tv_sec));
else
(void)printf(", expired");
#ifdef NDPRF_ONLINK
(void)printf(", ref=%d", PR.refcnt);
#endif
#if 0
switch (PR.origin) {
case PR_ORIG_RA:
(void)printf(", origin=RA");
break;
case PR_ORIG_RR:
(void)printf(", origin=RR");
break;
case PR_ORIG_STATIC:
(void)printf(", origin=static");
break;
case PR_ORIG_KERNEL:
(void)printf(", origin=kernel");
break;
default:
(void)printf(", origin=?");
break;
}
#endif
(void)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;
(void)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 */
(void)getnameinfo((struct sockaddr *)&sin6,
sin6.sin6_len, host_buf,
sizeof(host_buf), NULL, 0,
(nflag ? NI_NUMERICHOST : 0));
(void)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:
(void)printf(" (reachable)\n");
break;
default:
(void)printf(" (unreachable)\n");
}
} else
(void)printf(" (no neighbor state)\n");
}
if (PR.advrtrs > DRLSTSIZ)
(void)printf(" and %d routers\n",
PR.advrtrs - DRLSTSIZ);
} else
(void)printf(" No advertising router\n");
}
#undef PR
(void)prog_close(s);
#endif
}
static void
pfx_flush(void)
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
(void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
if (prog_ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
(void)prog_close(s);
}
static void
rtr_flush(void)
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
(void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
if (prog_ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
(void)prog_close(s);
}
static void
harmonize_rtr(void)
{
char dummyif[IFNAMSIZ+8];
int s;
if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
(void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
if (prog_ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
err(1, "ioctl(SIOCSNDFLUSH_IN6)");
(void)prog_close(s);
}
#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */
static void
setdefif(char *ifname)
{
struct in6_ndifreq ndifreq;
unsigned int ifindex;
int s;
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 = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
(void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
ndifreq.ifindex = ifindex;
if (prog_ioctl(s, SIOCSDEFIFACE_IN6, &ndifreq) < 0)
err(1, "ioctl(SIOCSDEFIFACE_IN6)");
(void)prog_close(s);
}
static void
getdefif(void)
{
struct in6_ndifreq ndifreq;
char ifname[IFNAMSIZ+8];
int s;
if ((s = prog_socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "socket");
(void)memset(&ndifreq, 0, sizeof(ndifreq));
(void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
if (prog_ioctl(s, SIOCGDEFIFACE_IN6, &ndifreq) < 0)
err(1, "ioctl(SIOCGDEFIFACE_IN6)");
if (ndifreq.ifindex == 0)
(void)printf("No default interface.\n");
else {
if ((if_indextoname((unsigned int)ndifreq.ifindex, ifname)) == NULL)
err(1, "failed to resolve ifname for index %lu",
ndifreq.ifindex);
(void)printf("ND default interface = %s\n", ifname);
}
(void)prog_close(s);
}
#endif
static const char *
sec2str(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, (size_t)(ep - p), "%dd", days);
if (n < 0 || n >= ep - p)
return "?";
p += n;
}
if (!first || hours) {
first = 0;
n = snprintf(p, (size_t)(ep - p), "%dh", hours);
if (n < 0 || n >= ep - p)
return "?";
p += n;
}
if (!first || mins) {
first = 0;
n = snprintf(p, (size_t)(ep - p), "%dm", mins);
if (n < 0 || n >= ep - p)
return "?";
p += n;
}
(void)snprintf(p, (size_t)(ep - p), "%ds", secs);
return(result);
}
/*
* Print the timestamp
* from tcpdump/util.c
*/
static void
ts_print(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);
}
Reference in New Issue View Git Blame Copy Permalink