1 /* $KAME: ping6.c,v 1.169 2003/07/25 06:01:47 itojun Exp $ */
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved.
32 * @(#)ping.c 8.1 (Berkeley) 6/5/93
33 * $FreeBSD: src/sbin/ping6/ping6.c,v 1.30 2007/04/19 15:41:00 mtm Exp $
34 * $DragonFly: src/sbin/ping6/ping6.c,v 1.10 2008/09/04 10:13:10 hasso Exp $
37 /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */
40 * Copyright (c) 1989, 1993
41 * The Regents of the University of California. All rights reserved.
43 * This code is derived from software contributed to Berkeley by
46 * Redistribution and use in source and binary forms, with or without
47 * modification, are permitted provided that the following conditions
49 * 1. Redistributions of source code must retain the above copyright
50 * notice, this list of conditions and the following disclaimer.
51 * 2. Redistributions in binary form must reproduce the above copyright
52 * notice, this list of conditions and the following disclaimer in the
53 * documentation and/or other materials provided with the distribution.
54 * 3. All advertising materials mentioning features or use of this software
55 * must display the following acknowledgement:
56 * This product includes software developed by the University of
57 * California, Berkeley and its contributors.
58 * 4. Neither the name of the University nor the names of its contributors
59 * may be used to endorse or promote products derived from this software
60 * without specific prior written permission.
62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
76 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
77 * measure round-trip-delays and packet loss across network paths.
81 * U. S. Army Ballistic Research Laboratory
85 * Public Domain. Distribution Unlimited.
87 * More statistics could always be gathered.
88 * This program has to run SUID to ROOT to access the ICMP socket.
92 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
93 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
94 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
95 * network attached to 1 or more interfaces)
98 #include <sys/param.h>
100 #include <sys/socket.h>
101 #include <sys/time.h>
104 #include <net/route.h>
106 #include <netinet/in.h>
107 #include <netinet/ip6.h>
108 #include <netinet/icmp6.h>
109 #include <arpa/inet.h>
110 #include <arpa/nameser.h>
128 #include <netinet6/ah.h>
129 #include <netinet6/ipsec.h>
139 #define MAXPACKETLEN 131072
141 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
142 #define ICMP6ECHOTMLEN sizeof(struct tv32)
143 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
144 #define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */
145 /* FQDN case, 64 bits of nonce + 32 bits ttl */
146 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
147 #define EXTRA 256 /* for AH and various other headers. weird. */
148 #define DEFDATALEN ICMP6ECHOTMLEN
149 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
150 #define NROUTES 9 /* number of record route slots */
152 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
153 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
154 #define SET(bit) (A(bit) |= B(bit))
155 #define CLR(bit) (A(bit) &= (~B(bit)))
156 #define TST(bit) (A(bit) & B(bit))
158 #define F_FLOOD 0x0001
159 #define F_INTERVAL 0x0002
160 #define F_PINGFILLED 0x0008
161 #define F_QUIET 0x0010
162 #define F_RROUTE 0x0020
163 #define F_SO_DEBUG 0x0040
164 #define F_VERBOSE 0x0100
166 #ifdef IPSEC_POLICY_IPSEC
167 #define F_POLICY 0x0400
169 #define F_AUTHHDR 0x0200
170 #define F_ENCRYPT 0x0400
171 #endif /*IPSEC_POLICY_IPSEC*/
173 #define F_NODEADDR 0x0800
174 #define F_FQDN 0x1000
175 #define F_INTERFACE 0x2000
176 #define F_SRCADDR 0x4000
177 #define F_HOSTNAME 0x10000
178 #define F_FQDNOLD 0x20000
179 #define F_NIGROUP 0x40000
180 #define F_SUPTYPES 0x80000
181 #define F_NOMINMTU 0x100000
182 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
185 #define IN6LEN sizeof(struct in6_addr)
186 #define SA6LEN sizeof(struct sockaddr_in6)
187 #define DUMMY_PORT 10101
189 #define SIN6(s) ((struct sockaddr_in6 *)(s))
192 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
193 * number of received sequence numbers we can keep track of. Change 128
194 * to 8192 for complete accuracy...
196 #define MAX_DUP_CHK (8 * 8192)
197 int mx_dup_ck = MAX_DUP_CHK;
198 char rcvd_tbl[MAX_DUP_CHK / 8];
200 struct addrinfo *res;
201 struct sockaddr_in6 dst; /* who to ping6 */
202 struct sockaddr_in6 src; /* src addr of this packet */
204 int datalen = DEFDATALEN;
205 int s; /* socket file descriptor */
206 u_char outpack[MAXPACKETLEN];
207 char BSPACE = '\b'; /* characters written for flood */
210 int ident; /* process id to identify our packets */
211 u_int8_t nonce[8]; /* nonce field for node information */
212 int hoplimit = -1; /* hoplimit */
213 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
216 long npackets; /* max packets to transmit */
217 long nreceived; /* # of packets we got back */
218 long nrepeats; /* number of duplicates */
219 long ntransmitted; /* sequence # for outbound packets = #sent */
220 struct timeval interval = {1, 0}; /* interval between packets */
223 int timing; /* flag to do timing */
224 double tmin = 999999999.0; /* minimum round trip time */
225 double tmax = 0.0; /* maximum round trip time */
226 double tsum = 0.0; /* sum of all times, for doing average */
227 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
229 /* for node addresses */
232 /* for ancillary data(advanced API) */
233 struct msghdr smsghdr;
234 struct iovec smsgiov;
237 volatile sig_atomic_t seenalrm;
238 volatile sig_atomic_t seenint;
240 volatile sig_atomic_t seeninfo;
243 int main(int, char *[]);
244 void fill(char *, char *);
245 int get_hoplim(struct msghdr *);
246 #ifdef IPV6_RECVPATHMTU
247 int get_pathmtu(struct msghdr *);
249 #define get_pathmtu(mhdr) (0)
251 struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
253 void retransmit(void);
255 size_t pingerlen(void);
257 const char *pr_addr(struct sockaddr *, int);
258 void pr_icmph(struct icmp6_hdr *, u_char *);
259 void pr_iph(struct ip6_hdr *);
260 void pr_suptypes(struct icmp6_nodeinfo *, size_t);
261 void pr_nodeaddr(struct icmp6_nodeinfo *, int);
262 int myechoreply(const struct icmp6_hdr *);
263 int mynireply(const struct icmp6_nodeinfo *);
264 char *dnsdecode(const u_char **, const u_char *, const u_char *,
266 void pr_pack(u_char *, int, struct msghdr *);
267 void pr_exthdrs(struct msghdr *);
268 void pr_ip6opt(void *, size_t);
269 void pr_rthdr(void *, size_t);
270 int pr_bitrange(u_int32_t, int, int);
271 void pr_retip(struct ip6_hdr *, u_char *);
273 void tvsub(struct timeval *, struct timeval *);
274 int setpolicy(int, char *);
275 char *nigroup(char *);
279 main(int argc, char **argv)
281 struct itimerval itimer;
282 struct sockaddr_in6 from;
283 #ifndef HAVE_ARC4RANDOM
289 struct timeval timeout, *tv;
291 struct addrinfo hints;
293 struct pollfd fdmaskp[1];
299 int ch, hold, packlen, preload, optval, ret_ga;
300 u_char *datap, *packet;
301 char *e, *target, *ifname = NULL, *gateway = NULL;
303 struct cmsghdr *scmsgp = NULL;
305 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
310 struct in6_pktinfo *pktinfo = NULL;
312 struct ip6_rthdr *rthdr = NULL;
314 #ifdef IPSEC_POLICY_IPSEC
315 char *policy_in = NULL;
316 char *policy_out = NULL;
318 #ifdef IPV6_USE_MIN_MTU
323 /* just to be sure */
324 memset(&smsghdr, 0, sizeof(smsghdr));
325 memset(&smsgiov, 0, sizeof(smsgiov));
328 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
332 #ifdef IPSEC_POLICY_IPSEC
336 #endif /*IPSEC_POLICY_IPSEC*/
338 while ((ch = getopt(argc, argv,
339 "a:b:c:dfHg:h:I:i:l:mnNp:qS:s:tvwW" ADDOPTS)) != -1) {
346 options &= ~F_NOUSERDATA;
347 options |= F_NODEADDR;
348 for (cp = optarg; *cp != '\0'; cp++) {
351 naflags |= NI_NODEADDR_FLAG_ALL;
355 naflags |= NI_NODEADDR_FLAG_COMPAT;
359 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
363 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
367 naflags |= NI_NODEADDR_FLAG_GLOBAL;
369 case 'A': /* experimental. not in the spec */
370 #ifdef NI_NODEADDR_FLAG_ANYCAST
371 naflags |= NI_NODEADDR_FLAG_ANYCAST;
375 "-a A is not supported on the platform");
386 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
389 lsockbufsize = strtoul(optarg, &e, 10);
390 sockbufsize = lsockbufsize;
391 if (errno || !*optarg || *e ||
392 sockbufsize != (long)lsockbufsize)
393 errx(1, "invalid socket buffer size");
396 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
400 npackets = strtol(optarg, &e, 10);
401 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
403 "illegal number of packets -- %s", optarg);
406 options |= F_SO_DEBUG;
411 errx(1, "Must be superuser to flood ping");
414 setbuf(stdout, NULL);
420 options |= F_HOSTNAME;
422 case 'h': /* hoplimit */
423 hoplimit = strtol(optarg, &e, 10);
424 if (*optarg == '\0' || *e != '\0')
425 errx(1, "illegal hoplimit %s", optarg);
426 if (255 < hoplimit || hoplimit < -1)
428 "illegal hoplimit -- %s", optarg);
432 options |= F_INTERFACE;
433 #ifndef USE_SIN6_SCOPE_ID
437 case 'i': /* wait between sending packets */
438 intval = strtod(optarg, &e);
439 if (*optarg == '\0' || *e != '\0')
440 errx(1, "illegal timing interval %s", optarg);
441 if (intval < 1 && getuid()) {
442 errx(1, "%s: only root may use interval < 1s",
445 interval.tv_sec = (long)intval;
447 (long)((intval - interval.tv_sec) * 1000000);
448 if (interval.tv_sec < 0)
449 errx(1, "illegal timing interval %s", optarg);
450 /* less than 1/hz does not make sense */
451 if (interval.tv_sec == 0 && interval.tv_usec < 10000) {
452 warnx("too small interval, raised to 0.01");
453 interval.tv_usec = 10000;
455 options |= F_INTERVAL;
460 errx(1, "Must be superuser to preload");
462 preload = strtol(optarg, &e, 10);
463 if (preload < 0 || *optarg == '\0' || *e != '\0')
464 errx(1, "illegal preload value -- %s", optarg);
467 #ifdef IPV6_USE_MIN_MTU
471 errx(1, "-%c is not supported on this platform", ch);
475 options &= ~F_HOSTNAME;
478 options |= F_NIGROUP;
480 case 'p': /* fill buffer with user pattern */
481 options |= F_PINGFILLED;
482 fill((char *)datap, optarg);
488 memset(&hints, 0, sizeof(struct addrinfo));
489 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
490 hints.ai_family = AF_INET6;
491 hints.ai_socktype = SOCK_RAW;
492 hints.ai_protocol = IPPROTO_ICMPV6;
494 ret_ga = getaddrinfo(optarg, NULL, &hints, &res);
496 errx(1, "invalid source address: %s",
497 gai_strerror(ret_ga));
500 * res->ai_family must be AF_INET6 and res->ai_addrlen
501 * must be sizeof(src).
503 memcpy(&src, res->ai_addr, res->ai_addrlen);
504 srclen = res->ai_addrlen;
506 options |= F_SRCADDR;
508 case 's': /* size of packet to send */
509 datalen = strtol(optarg, &e, 10);
510 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
511 errx(1, "illegal datalen value -- %s", optarg);
512 if (datalen > MAXDATALEN) {
514 "datalen value too large, maximum is %d",
519 options &= ~F_NOUSERDATA;
520 options |= F_SUPTYPES;
523 options |= F_VERBOSE;
526 options &= ~F_NOUSERDATA;
530 options &= ~F_NOUSERDATA;
531 options |= F_FQDNOLD;
534 #ifdef IPSEC_POLICY_IPSEC
537 if (!strncmp("in", optarg, 2)) {
538 if ((policy_in = strdup(optarg)) == NULL)
540 } else if (!strncmp("out", optarg, 3)) {
541 if ((policy_out = strdup(optarg)) == NULL)
544 errx(1, "invalid security policy");
548 options |= F_AUTHHDR;
551 options |= F_ENCRYPT;
553 #endif /*IPSEC_POLICY_IPSEC*/
569 errx(1, "too many arguments");
573 if (options & F_NIGROUP) {
574 target = nigroup(argv[argc - 1]);
575 if (target == NULL) {
580 target = argv[argc - 1];
583 memset(&hints, 0, sizeof(struct addrinfo));
584 hints.ai_flags = AI_CANONNAME;
585 hints.ai_family = AF_INET6;
586 hints.ai_socktype = SOCK_RAW;
587 hints.ai_protocol = IPPROTO_ICMPV6;
589 ret_ga = getaddrinfo(target, NULL, &hints, &res);
591 errx(1, "%s", gai_strerror(ret_ga));
592 if (res->ai_canonname)
593 hostname = res->ai_canonname;
598 errx(1, "getaddrinfo failed");
600 memcpy(&dst, res->ai_addr, res->ai_addrlen);
602 if ((s = socket(res->ai_family, res->ai_socktype,
603 res->ai_protocol)) < 0)
606 /* set the source address if specified. */
607 if ((options & F_SRCADDR) &&
608 bind(s, (struct sockaddr *)&src, srclen) != 0) {
612 /* set the gateway (next hop) if specified */
614 struct addrinfo ghints, *gres;
617 memset(&ghints, 0, sizeof(ghints));
618 ghints.ai_family = AF_INET6;
619 ghints.ai_socktype = SOCK_RAW;
620 ghints.ai_protocol = IPPROTO_ICMPV6;
622 error = getaddrinfo(gateway, NULL, &hints, &gres);
624 errx(1, "getaddrinfo for the gateway %s: %s",
625 gateway, gai_strerror(error));
627 if (gres->ai_next && (options & F_VERBOSE))
628 warnx("gateway resolves to multiple addresses");
630 if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP,
631 gres->ai_addr, gres->ai_addrlen)) {
632 err(1, "setsockopt(IPV6_NEXTHOP)");
639 * let the kerel pass extension headers of incoming packets,
640 * for privileged socket options
642 if ((options & F_VERBOSE) != 0) {
645 #ifdef IPV6_RECVHOPOPTS
646 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
648 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
649 #else /* old adv. API */
650 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
652 err(1, "setsockopt(IPV6_HOPOPTS)");
654 #ifdef IPV6_RECVDSTOPTS
655 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
657 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
658 #else /* old adv. API */
659 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
661 err(1, "setsockopt(IPV6_DSTOPTS)");
663 #ifdef IPV6_RECVRTHDRDSTOPTS
664 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
666 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
670 /* revoke root privilege */
674 if ((options & F_FLOOD) && (options & F_INTERVAL))
675 errx(1, "-f and -i incompatible options");
677 if ((options & F_NOUSERDATA) == 0) {
678 if (datalen >= (int)sizeof(struct tv32)) {
679 /* we can time transfer */
683 /* in F_VERBOSE case, we may get non-echoreply packets*/
684 if (options & F_VERBOSE)
685 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
687 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
689 /* suppress timing for node information query */
692 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
695 if (!(packet = (u_char *)malloc((u_int)packlen)))
696 err(1, "Unable to allocate packet");
697 if (!(options & F_PINGFILLED))
698 for (i = ICMP6ECHOLEN; i < packlen; ++i)
701 ident = getpid() & 0xFFFF;
702 #ifndef HAVE_ARC4RANDOM
703 gettimeofday(&seed, NULL);
704 srand((unsigned int)(seed.tv_sec ^ seed.tv_usec ^ (long)ident));
705 memset(nonce, 0, sizeof(nonce));
706 for (i = 0; i < (int)sizeof(nonce); i += sizeof(int))
707 *((int *)&nonce[i]) = rand();
709 memset(nonce, 0, sizeof(nonce));
710 for (i = 0; i < (int)sizeof(nonce); i += sizeof(u_int32_t))
711 *((u_int32_t *)&nonce[i]) = arc4random();
716 if (options & F_SO_DEBUG)
717 setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
719 optval = IPV6_DEFHLIM;
720 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
721 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
722 &optval, sizeof(optval)) == -1)
723 err(1, "IPV6_MULTICAST_HOPS");
724 #ifdef IPV6_USE_MIN_MTU
726 optval = mflag > 1 ? 0 : 1;
727 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
728 &optval, sizeof(optval)) == -1)
729 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
731 #ifdef IPV6_RECVPATHMTU
734 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
735 &optval, sizeof(optval)) == -1)
736 err(1, "setsockopt(IPV6_RECVPATHMTU)");
738 #endif /* IPV6_RECVPATHMTU */
739 #endif /* IPV6_USE_MIN_MTU */
742 #ifdef IPSEC_POLICY_IPSEC
743 if (options & F_POLICY) {
744 if (setpolicy(s, policy_in) < 0)
745 errx(1, "%s", ipsec_strerror());
746 if (setpolicy(s, policy_out) < 0)
747 errx(1, "%s", ipsec_strerror());
750 if (options & F_AUTHHDR) {
751 optval = IPSEC_LEVEL_REQUIRE;
752 #ifdef IPV6_AUTH_TRANS_LEVEL
753 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
754 &optval, sizeof(optval)) == -1)
755 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
757 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
758 &optval, sizeof(optval)) == -1)
759 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
762 if (options & F_ENCRYPT) {
763 optval = IPSEC_LEVEL_REQUIRE;
764 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
765 &optval, sizeof(optval)) == -1)
766 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
768 #endif /*IPSEC_POLICY_IPSEC*/
773 struct icmp6_filter filt;
774 if (!(options & F_VERBOSE)) {
775 ICMP6_FILTER_SETBLOCKALL(&filt);
776 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
777 (options & F_NODEADDR) || (options & F_SUPTYPES))
778 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
780 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
782 ICMP6_FILTER_SETPASSALL(&filt);
784 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
786 err(1, "setsockopt(ICMP6_FILTER)");
788 #endif /*ICMP6_FILTER*/
790 /* let the kerel pass extension headers of incoming packets */
791 if ((options & F_VERBOSE) != 0) {
794 #ifdef IPV6_RECVRTHDR
795 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
797 err(1, "setsockopt(IPV6_RECVRTHDR)");
798 #else /* old adv. API */
799 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
801 err(1, "setsockopt(IPV6_RTHDR)");
807 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
808 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
809 &optval, sizeof(optval)) == -1)
810 err(1, "IPV6_MULTICAST_LOOP");
813 /* Specify the outgoing interface and/or the source address */
815 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
818 ip6optlen += CMSG_SPACE(sizeof(int));
820 /* set IP6 packet options */
822 if ((scmsg = (char *)malloc(ip6optlen)) == 0)
823 errx(1, "can't allocate enough memory");
824 smsghdr.msg_control = (caddr_t)scmsg;
825 smsghdr.msg_controllen = ip6optlen;
826 scmsgp = (struct cmsghdr *)scmsg;
829 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
830 memset(pktinfo, 0, sizeof(*pktinfo));
831 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
832 scmsgp->cmsg_level = IPPROTO_IPV6;
833 scmsgp->cmsg_type = IPV6_PKTINFO;
834 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
837 /* set the outgoing interface */
839 #ifndef USE_SIN6_SCOPE_ID
840 /* pktinfo must have already been allocated */
841 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
842 errx(1, "%s: invalid interface name", ifname);
844 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
845 errx(1, "%s: invalid interface name", ifname);
848 if (hoplimit != -1) {
849 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
850 scmsgp->cmsg_level = IPPROTO_IPV6;
851 scmsgp->cmsg_type = IPV6_HOPLIMIT;
852 *(int *)(CMSG_DATA(scmsgp)) = hoplimit;
854 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
857 if (!(options & F_SRCADDR)) {
859 * get the source address. XXX since we revoked the root
860 * privilege, we cannot use a raw socket for this.
863 socklen_t len = sizeof(src);
865 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
866 err(1, "UDP socket");
868 src.sin6_family = AF_INET6;
869 src.sin6_addr = dst.sin6_addr;
870 src.sin6_port = ntohs(DUMMY_PORT);
871 src.sin6_scope_id = dst.sin6_scope_id;
875 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
876 (void *)pktinfo, sizeof(*pktinfo)))
877 err(1, "UDP setsockopt(IPV6_PKTINFO)");
878 if (hoplimit != -1 &&
879 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
880 (void *)&hoplimit, sizeof(hoplimit)))
881 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
882 if (hoplimit != -1 &&
883 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
884 (void *)&hoplimit, sizeof(hoplimit)))
885 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
887 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
888 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
889 err(1, "UDP setsockopt(IPV6_RTHDR)");
890 #else /* old advanced API */
891 if (smsghdr.msg_control &&
892 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS,
893 (void *)smsghdr.msg_control, smsghdr.msg_controllen))
894 err(1, "UDP setsockopt(IPV6_PKTOPTIONS)");
897 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
898 err(1, "UDP connect");
900 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
901 err(1, "getsockname");
906 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
908 if (datalen > sockbufsize)
909 warnx("you need -b to increase socket buffer size");
910 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
911 sizeof(sockbufsize)) < 0)
912 err(1, "setsockopt(SO_SNDBUF)");
913 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
914 sizeof(sockbufsize)) < 0)
915 err(1, "setsockopt(SO_RCVBUF)");
918 if (datalen > 8 * 1024) /*XXX*/
919 warnx("you need -b to increase socket buffer size");
921 * When pinging the broadcast address, you can get a lot of
922 * answers. Doing something so evil is useful if you are trying
923 * to stress the ethernet, or just want to fill the arp cache
924 * to get some stuff for /etc/ethers.
927 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
933 #ifndef USE_SIN6_SCOPE_ID
934 #ifdef IPV6_RECVPKTINFO
935 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
937 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
938 #else /* old adv. API */
939 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
941 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
943 #endif /* USE_SIN6_SCOPE_ID */
944 #ifdef IPV6_RECVHOPLIMIT
945 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
947 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
948 #else /* old adv. API */
949 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
951 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
954 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
955 (unsigned long)(pingerlen() - 8));
956 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
957 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
959 while (preload--) /* Fire off them quickies. */
962 signal(SIGINT, onsignal);
964 signal(SIGINFO, onsignal);
967 if ((options & F_FLOOD) == 0) {
968 signal(SIGALRM, onsignal);
969 itimer.it_interval = interval;
970 itimer.it_value = interval;
971 setitimer(ITIMER_REAL, &itimer, NULL);
972 if (ntransmitted == 0)
977 fdmasks = howmany(s + 1, NFDBITS) * sizeof(fd_mask);
978 if ((fdmaskp = malloc(fdmasks)) == NULL)
982 seenalrm = seenint = 0;
987 /* For control (ancillary) data received from recvmsg() */
988 cm = (struct cmsghdr *)malloc(CONTROLLEN);
996 /* signal handling */
1015 if (options & F_FLOOD) {
1021 timeout.tv_usec = 10000;
1033 fdmaskp[0].events = POLLIN;
1034 cc = poll(fdmaskp, 1, timeout);
1036 memset(fdmaskp, 0, fdmasks);
1038 cc = select(s + 1, fdmaskp, NULL, NULL, tv);
1041 if (errno != EINTR) {
1053 m.msg_name = (caddr_t)&from;
1054 m.msg_namelen = sizeof(from);
1055 memset(&iov, 0, sizeof(iov));
1056 iov[0].iov_base = (caddr_t)packet;
1057 iov[0].iov_len = packlen;
1060 memset(cm, 0, CONTROLLEN);
1061 m.msg_control = (void *)cm;
1062 m.msg_controllen = CONTROLLEN;
1064 cc = recvmsg(s, &m, 0);
1066 if (errno != EINTR) {
1071 } else if (cc == 0) {
1075 * receive control messages only. Process the
1076 * exceptions (currently the only possiblity is
1077 * a path MTU notification.)
1079 if ((mtu = get_pathmtu(&m)) > 0) {
1080 if ((options & F_VERBOSE) != 0) {
1081 printf("new path MTU (%d) is "
1088 * an ICMPv6 message (probably an echoreply) arrived.
1090 pr_pack(packet, cc, &m);
1092 if (npackets && nreceived >= npackets)
1096 exit(nreceived == 0);
1119 * This routine transmits another ping6.
1124 struct itimerval itimer;
1130 * If we're not transmitting any more packets, change the timer
1131 * to wait two round-trip times if we've received any packets or
1132 * ten seconds if we haven't.
1136 itimer.it_value.tv_sec = 2 * tmax / 1000;
1137 if (itimer.it_value.tv_sec == 0)
1138 itimer.it_value.tv_sec = 1;
1140 itimer.it_value.tv_sec = MAXWAIT;
1141 itimer.it_interval.tv_sec = 0;
1142 itimer.it_interval.tv_usec = 0;
1143 itimer.it_value.tv_usec = 0;
1145 signal(SIGALRM, onint);
1146 setitimer(ITIMER_REAL, &itimer, NULL);
1151 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1152 * will be added on by the kernel. The ID field is our UNIX process ID,
1153 * and the sequence number is an ascending integer. The first 8 bytes
1154 * of the data portion are used to hold a UNIX "timeval" struct in VAX
1155 * byte-order, to compute the round-trip time.
1162 if (options & F_FQDN)
1163 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1164 else if (options & F_FQDNOLD)
1166 else if (options & F_NODEADDR)
1167 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1168 else if (options & F_SUPTYPES)
1171 l = ICMP6ECHOLEN + datalen;
1179 struct icmp6_hdr *icp;
1180 struct iovec iov[2];
1182 struct icmp6_nodeinfo *nip;
1185 if (npackets && ntransmitted >= npackets)
1186 return(-1); /* no more transmission */
1188 icp = (struct icmp6_hdr *)outpack;
1189 nip = (struct icmp6_nodeinfo *)outpack;
1190 memset(icp, 0, sizeof(*icp));
1191 icp->icmp6_cksum = 0;
1192 seq = ntransmitted++;
1193 CLR(seq % mx_dup_ck);
1195 if (options & F_FQDN) {
1196 icp->icmp6_type = ICMP6_NI_QUERY;
1197 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1198 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1199 nip->ni_flags = htons(0);
1201 memcpy(nip->icmp6_ni_nonce, nonce,
1202 sizeof(nip->icmp6_ni_nonce));
1203 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1205 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1206 sizeof(dst.sin6_addr));
1207 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1209 } else if (options & F_FQDNOLD) {
1210 /* packet format in 03 draft - no Subject data on queries */
1211 icp->icmp6_type = ICMP6_NI_QUERY;
1212 icp->icmp6_code = 0; /* code field is always 0 */
1213 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1214 nip->ni_flags = htons(0);
1216 memcpy(nip->icmp6_ni_nonce, nonce,
1217 sizeof(nip->icmp6_ni_nonce));
1218 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1222 } else if (options & F_NODEADDR) {
1223 icp->icmp6_type = ICMP6_NI_QUERY;
1224 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1225 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1226 nip->ni_flags = naflags;
1228 memcpy(nip->icmp6_ni_nonce, nonce,
1229 sizeof(nip->icmp6_ni_nonce));
1230 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1232 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1233 sizeof(dst.sin6_addr));
1234 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1236 } else if (options & F_SUPTYPES) {
1237 icp->icmp6_type = ICMP6_NI_QUERY;
1238 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1239 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1240 /* we support compressed bitmap */
1241 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1243 memcpy(nip->icmp6_ni_nonce, nonce,
1244 sizeof(nip->icmp6_ni_nonce));
1245 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1249 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1250 icp->icmp6_code = 0;
1251 icp->icmp6_id = htons(ident);
1252 icp->icmp6_seq = ntohs(seq);
1256 gettimeofday(&tv, NULL);
1257 tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN];
1258 tv32->tv32_sec = htonl(tv.tv_sec);
1259 tv32->tv32_usec = htonl(tv.tv_usec);
1261 cc = ICMP6ECHOLEN + datalen;
1265 if (pingerlen() != cc)
1266 errx(1, "internal error; length mismatch");
1269 smsghdr.msg_name = (caddr_t)&dst;
1270 smsghdr.msg_namelen = sizeof(dst);
1271 memset(&iov, 0, sizeof(iov));
1272 iov[0].iov_base = (caddr_t)outpack;
1273 iov[0].iov_len = cc;
1274 smsghdr.msg_iov = iov;
1275 smsghdr.msg_iovlen = 1;
1277 i = sendmsg(s, &smsghdr, 0);
1279 if (i < 0 || i != cc) {
1282 printf("ping6: wrote %s %d chars, ret=%d\n", hostname, cc, i);
1284 if (!(options & F_QUIET) && options & F_FLOOD)
1285 write(STDOUT_FILENO, &DOT, 1);
1291 myechoreply(const struct icmp6_hdr *icp)
1293 if (ntohs(icp->icmp6_id) == ident)
1300 mynireply(const struct icmp6_nodeinfo *nip)
1302 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1303 nonce + sizeof(u_int16_t),
1304 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1311 dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf,
1316 char cresult[MAXDNAME + 1];
1327 if (i == 0 || cp != *sp) {
1328 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1329 return NULL; /*result overrun*/
1335 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1336 /* DNS compression */
1340 comp = base + (i & 0x3f);
1341 if (dnsdecode(&comp, cp, base, cresult,
1342 sizeof(cresult)) == NULL)
1344 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1345 return NULL; /*result overrun*/
1347 } else if ((i & 0x3f) == i) {
1349 return NULL; /*source overrun*/
1350 while (i-- > 0 && cp < ep) {
1351 l = snprintf(cresult, sizeof(cresult),
1352 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1353 if (l >= (int)sizeof(cresult) || l < 0)
1355 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1356 return NULL; /*result overrun*/
1360 return NULL; /*invalid label*/
1363 return NULL; /*not terminated*/
1371 * Print out the packet, if it came from us. This logic is necessary
1372 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1373 * which arrive ('tis only fair). This permits multiple copies of this
1374 * program to be run without having intermingled output (or statistics!).
1377 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1379 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1380 struct icmp6_hdr *icp;
1381 struct icmp6_nodeinfo *ni;
1384 struct sockaddr *from;
1386 u_char *cp = NULL, *dp, *end = buf + cc;
1387 struct in6_pktinfo *pktinfo = NULL;
1388 struct timeval tv, tp;
1390 double triptime = 0;
1395 char dnsname[MAXDNAME + 1];
1397 gettimeofday(&tv, NULL);
1399 if (!mhdr || !mhdr->msg_name ||
1400 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1401 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1402 if (options & F_VERBOSE)
1403 warnx("invalid peername");
1406 from = (struct sockaddr *)mhdr->msg_name;
1407 fromlen = mhdr->msg_namelen;
1408 if (cc < (int)sizeof(struct icmp6_hdr)) {
1409 if (options & F_VERBOSE)
1410 warnx("packet too short (%d bytes) from %s", cc,
1411 pr_addr(from, fromlen));
1414 if (((mhdr->msg_flags & MSG_CTRUNC) != 0) &&
1415 (options & F_VERBOSE) != 0)
1416 warnx("some control data discarded, insufficient buffer size");
1417 icp = (struct icmp6_hdr *)buf;
1418 ni = (struct icmp6_nodeinfo *)buf;
1421 if ((hoplim = get_hoplim(mhdr)) == -1) {
1422 warnx("failed to get receiving hop limit");
1425 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1426 warnx("failed to get receiving packet information");
1430 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1431 seq = ntohs(icp->icmp6_seq);
1434 tpp = (struct tv32 *)(icp + 1);
1435 tp.tv_sec = ntohl(tpp->tv32_sec);
1436 tp.tv_usec = ntohl(tpp->tv32_usec);
1438 triptime = ((double)tv.tv_sec) * 1000.0 +
1439 ((double)tv.tv_usec) / 1000.0;
1441 tsumsq += triptime * triptime;
1442 if (triptime < tmin)
1444 if (triptime > tmax)
1448 if (TST(seq % mx_dup_ck)) {
1453 SET(seq % mx_dup_ck);
1457 if (options & F_QUIET)
1460 if (options & F_FLOOD)
1461 write(STDOUT_FILENO, &BSPACE, 1);
1463 printf("%d bytes from %s, icmp_seq=%u", cc,
1464 pr_addr(from, fromlen), seq);
1465 printf(" hlim=%d", hoplim);
1466 if ((options & F_VERBOSE) != 0) {
1467 struct sockaddr_in6 dstsa;
1469 memset(&dstsa, 0, sizeof(dstsa));
1470 dstsa.sin6_family = AF_INET6;
1471 dstsa.sin6_len = sizeof(dstsa);
1472 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1473 dstsa.sin6_addr = pktinfo->ipi6_addr;
1475 pr_addr((struct sockaddr *)&dstsa,
1479 printf(" time=%.3f ms", triptime);
1482 /* check the data */
1483 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1484 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1485 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1487 printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
1492 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1493 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce);
1495 if (TST(seq % mx_dup_ck)) {
1500 SET(seq % mx_dup_ck);
1504 if (options & F_QUIET)
1507 printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1509 switch (ntohs(ni->ni_code)) {
1510 case ICMP6_NI_SUCCESS:
1512 case ICMP6_NI_REFUSED:
1513 printf("refused, type 0x%x", ntohs(ni->ni_type));
1515 case ICMP6_NI_UNKNOWN:
1516 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1519 printf("unknown code 0x%x, type 0x%x",
1520 ntohs(ni->ni_code), ntohs(ni->ni_type));
1524 switch (ntohs(ni->ni_qtype)) {
1526 printf("NodeInfo NOOP");
1528 case NI_QTYPE_SUPTYPES:
1529 pr_suptypes(ni, end - (u_char *)ni);
1531 case NI_QTYPE_NODEADDR:
1532 pr_nodeaddr(ni, end - (u_char *)ni);
1535 default: /* XXX: for backward compatibility */
1536 cp = (u_char *)ni + ICMP6_NIRLEN;
1537 if (buf[off + ICMP6_NIRLEN] ==
1538 cc - off - ICMP6_NIRLEN - 1)
1543 cp++; /* skip length */
1545 safeputc(*cp & 0xff);
1551 if (dnsdecode((const u_char **)&cp, end,
1552 (const u_char *)(ni + 1), dnsname,
1553 sizeof(dnsname)) == NULL) {
1558 * name-lookup special handling for
1561 if (cp + 1 <= end && !*cp &&
1562 strlen(dnsname) > 0) {
1563 dnsname[strlen(dnsname) - 1] = '\0';
1566 printf("%s%s", i > 0 ? "," : "",
1570 if (options & F_VERBOSE) {
1576 switch (ni->ni_code) {
1577 case ICMP6_NI_REFUSED:
1581 case ICMP6_NI_UNKNOWN:
1582 printf("unknown qtype");
1587 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1588 /* case of refusion, unknown */
1593 ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]);
1596 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1597 printf("TTL=%d:meaningless",
1601 printf("TTL=%d:invalid", ttl);
1603 printf("TTL=%d", ttl);
1613 cp = (u_char *)ni + ICMP6_NIRLEN;
1622 if (buf[off + ICMP6_NIRLEN] !=
1623 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1626 printf("invalid namelen:%d/%lu",
1627 buf[off + ICMP6_NIRLEN],
1628 (u_long)cc - off - ICMP6_NIRLEN - 1);
1638 /* We've got something other than an ECHOREPLY */
1639 if (!(options & F_VERBOSE))
1641 printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1645 if (!(options & F_FLOOD)) {
1647 if (options & F_VERBOSE)
1655 pr_exthdrs(struct msghdr *mhdr)
1662 bufp = mhdr->msg_control;
1663 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1664 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1665 if (cm->cmsg_level != IPPROTO_IPV6)
1668 bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp);
1671 switch (cm->cmsg_type) {
1673 printf(" HbH Options: ");
1674 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1677 #ifdef IPV6_RTHDRDSTOPTS
1678 case IPV6_RTHDRDSTOPTS:
1680 printf(" Dst Options: ");
1681 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1684 printf(" Routing: ");
1685 pr_rthdr(CMSG_DATA(cm), (size_t)bufsize);
1693 pr_ip6opt(void *extbuf, size_t bufsize)
1695 struct ip6_hbh *ext;
1698 socklen_t extlen, len, origextlen;
1704 ext = (struct ip6_hbh *)extbuf;
1705 extlen = (ext->ip6h_len + 1) * 8;
1706 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1707 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1710 * Bounds checking on the ancillary data buffer:
1711 * subtract the size of a cmsg structure from the buffer size.
1713 if (bufsize < (extlen + CMSG_SPACE(0))) {
1714 origextlen = extlen;
1715 extlen = bufsize - CMSG_SPACE(0);
1716 warnx("options truncated, showing only %u (total=%u)",
1717 (unsigned int)(extlen / 8 - 1),
1718 (unsigned int)(ext->ip6h_len));
1723 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1724 &type, &len, &databuf);
1725 if (currentlen == -1)
1729 * Note that inet6_opt_next automatically skips any padding
1734 offset = inet6_opt_get_val(databuf, offset,
1735 &value4, sizeof(value4));
1736 printf(" Jumbo Payload Opt: Length %u\n",
1737 (u_int32_t)ntohl(value4));
1739 /* FIXME: RFC3542 option is IP6OPT_ROUTER_ALERT. */
1740 case IP6OPT_RTALERT:
1742 offset = inet6_opt_get_val(databuf, offset,
1743 &value2, sizeof(value2));
1744 printf(" Router Alert Opt: Type %u\n",
1748 printf(" Received Opt %u len %lu\n",
1749 type, (unsigned long)len);
1755 #else /* !USE_RFC3542 */
1758 pr_ip6opt(void *extbuf __unused, size_t bufsize __unused)
1763 #endif /* USE_RFC3542 */
1767 pr_rthdr(void *extbuf, size_t bufsize __unused)
1769 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1771 /* print fixed part of the header */
1772 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1773 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1774 printf("segments unknown, ");
1775 printf("%d left\n", rh->ip6r_segleft);
1780 #else /* !USE_RFC3542 */
1783 pr_rthdr(void *extbuf __unused)
1788 #endif /* USE_RFC3542 */
1791 pr_bitrange(u_int32_t v, int soff, int ii)
1798 /* shift till we have 0x01 */
1799 if ((v & 0x01) == 0) {
1801 printf("-%u", soff + off - 1);
1812 case 0x04: case 0x0c:
1823 /* we have 0x01 with us */
1824 for (i = 0; i < 32 - off; i++) {
1825 if ((v & (0x01 << i)) == 0)
1829 printf(" %u", soff + off);
1836 /* struct icmp6_nodeinfo *ni: ni->qtype must be SUPTYPES */
1838 pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
1842 const u_char *cp, *end;
1845 u_int16_t words; /*32bit count*/
1848 #define MAXQTYPES (1 << 16)
1852 cp = (u_char *)(ni + 1);
1853 end = ((u_char *)ni) + nilen;
1857 printf("NodeInfo Supported Qtypes");
1858 if (options & F_VERBOSE) {
1859 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
1860 printf(", compressed bitmap");
1862 printf(", raw bitmap");
1866 clen = (size_t)(end - cp);
1867 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
1868 if (clen == 0 || clen > MAXQTYPES / 8 ||
1874 if (clen < sizeof(cbit) || clen % sizeof(v))
1876 memcpy(&cbit, cp, sizeof(cbit));
1877 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
1881 clen = ntohs(cbit.words) * sizeof(v);
1882 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
1887 for (off = 0; off < clen; off += sizeof(v)) {
1888 memcpy(&v, cp + off, sizeof(v));
1889 v = (u_int32_t)ntohl(v);
1890 b = pr_bitrange(v, (int)(cur + off * 8), b);
1892 /* flush the remaining bits */
1893 b = pr_bitrange(0, (int)(cur + off * 8), b);
1897 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
1898 cur += ntohs(cbit.skip) * 32;
1902 /* struct icmp6_nodeinfo *ni: ni->qtype must be NODEADDR */
1904 pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
1906 u_char *cp = (u_char *)(ni + 1);
1907 char ntop_buf[INET6_ADDRSTRLEN];
1910 nilen -= sizeof(struct icmp6_nodeinfo);
1912 if (options & F_VERBOSE) {
1913 switch (ni->ni_code) {
1914 case ICMP6_NI_REFUSED:
1917 case ICMP6_NI_UNKNOWN:
1918 printf("unknown qtype");
1921 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
1922 printf(" truncated");
1926 printf(" no address\n");
1929 * In icmp-name-lookups 05 and later, TTL of each returned address
1930 * is contained in the resposne. We try to detect the version
1931 * by the length of the data, but note that the detection algorithm
1932 * is incomplete. We assume the latest draft by default.
1934 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
1940 /* XXX: alignment? */
1941 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp);
1942 cp += sizeof(u_int32_t);
1943 nilen -= sizeof(u_int32_t);
1946 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
1948 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
1949 printf(" %s", ntop_buf);
1951 if (ttl == 0xffffffff) {
1953 * XXX: can this convention be applied to all
1954 * type of TTL (i.e. non-ND TTL)?
1956 printf("(TTL=infty)");
1959 printf("(TTL=%u)", ttl);
1963 nilen -= sizeof(struct in6_addr);
1964 cp += sizeof(struct in6_addr);
1969 get_hoplim(struct msghdr *mhdr)
1973 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1974 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1975 if (cm->cmsg_len == 0)
1978 if (cm->cmsg_level == IPPROTO_IPV6 &&
1979 cm->cmsg_type == IPV6_HOPLIMIT &&
1980 cm->cmsg_len == CMSG_LEN(sizeof(int)))
1981 return(*(int *)CMSG_DATA(cm));
1987 struct in6_pktinfo *
1988 get_rcvpktinfo(struct msghdr *mhdr)
1992 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1993 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1994 if (cm->cmsg_len == 0)
1997 if (cm->cmsg_level == IPPROTO_IPV6 &&
1998 cm->cmsg_type == IPV6_PKTINFO &&
1999 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
2000 return((struct in6_pktinfo *)CMSG_DATA(cm));
2006 #ifdef IPV6_RECVPATHMTU
2008 get_pathmtu(struct msghdr *mhdr)
2011 struct ip6_mtuinfo *mtuctl = NULL;
2013 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2014 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2015 if (cm->cmsg_len == 0)
2018 if (cm->cmsg_level == IPPROTO_IPV6 &&
2019 cm->cmsg_type == IPV6_PATHMTU &&
2020 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2021 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm);
2024 * If the notified destination is different from
2025 * the one we are pinging, just ignore the info.
2026 * We check the scope ID only when both notified value
2027 * and our own value have non-0 values, because we may
2028 * have used the default scope zone ID for sending,
2029 * in which case the scope ID value is 0.
2031 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr,
2033 (mtuctl->ip6m_addr.sin6_scope_id &&
2034 dst.sin6_scope_id &&
2035 mtuctl->ip6m_addr.sin6_scope_id !=
2036 dst.sin6_scope_id)) {
2037 if ((options & F_VERBOSE) != 0) {
2038 printf("path MTU for %s is notified. "
2040 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr,
2041 sizeof(mtuctl->ip6m_addr)));
2047 * Ignore an invalid MTU. XXX: can we just believe
2050 if (mtuctl->ip6m_mtu < IPV6_MMTU)
2053 /* notification for our destination. return the MTU. */
2054 return((int)mtuctl->ip6m_mtu);
2063 * Subtract 2 timeval structs: out = out - in. Out is assumed to
2067 tvsub(struct timeval *out, struct timeval *in)
2069 if ((out->tv_usec -= in->tv_usec) < 0) {
2071 out->tv_usec += 1000000;
2073 out->tv_sec -= in->tv_sec;
2082 onint(int sig __unused)
2086 signal(SIGINT, SIG_DFL);
2087 kill(getpid(), SIGINT);
2095 * Print out statistics.
2101 printf("\n--- %s ping6 statistics ---\n", hostname);
2102 printf("%ld packets transmitted, ", ntransmitted);
2103 printf("%ld packets received, ", nreceived);
2105 printf("+%ld duplicates, ", nrepeats);
2107 if (nreceived > ntransmitted)
2108 printf("-- somebody's duplicating packets!");
2110 printf("%.1f%% packet loss",
2111 ((((double)ntransmitted - nreceived) * 100.0) /
2115 if (nreceived && timing) {
2116 /* Only display average to microseconds */
2117 double num = nreceived + nrepeats;
2118 double avg = tsum / num;
2119 double dev = sqrt(tsumsq / num - avg * avg);
2121 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2122 tmin, avg, tmax, dev);
2129 static const char *niqcode[] = {
2131 "DNS label", /*or empty*/
2136 static const char *nircode[] = {
2137 "Success", "Refused", "Unknown",
2143 * Print a descriptive string about an ICMP header.
2146 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2148 char ntop_buf[INET6_ADDRSTRLEN];
2149 struct nd_redirect *red;
2150 struct icmp6_nodeinfo *ni;
2151 char dnsname[MAXDNAME + 1];
2155 switch (icp->icmp6_type) {
2156 case ICMP6_DST_UNREACH:
2157 switch (icp->icmp6_code) {
2158 case ICMP6_DST_UNREACH_NOROUTE:
2159 printf("No Route to Destination\n");
2161 case ICMP6_DST_UNREACH_ADMIN:
2162 printf("Destination Administratively "
2165 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2166 printf("Destination Unreachable Beyond Scope\n");
2168 case ICMP6_DST_UNREACH_ADDR:
2169 printf("Destination Host Unreachable\n");
2171 case ICMP6_DST_UNREACH_NOPORT:
2172 printf("Destination Port Unreachable\n");
2175 printf("Destination Unreachable, Bad Code: %d\n",
2179 /* Print returned IP header information */
2180 pr_retip((struct ip6_hdr *)(icp + 1), end);
2182 case ICMP6_PACKET_TOO_BIG:
2183 printf("Packet too big mtu = %d\n",
2184 (int)ntohl(icp->icmp6_mtu));
2185 pr_retip((struct ip6_hdr *)(icp + 1), end);
2187 case ICMP6_TIME_EXCEEDED:
2188 switch (icp->icmp6_code) {
2189 case ICMP6_TIME_EXCEED_TRANSIT:
2190 printf("Time to live exceeded\n");
2192 case ICMP6_TIME_EXCEED_REASSEMBLY:
2193 printf("Frag reassembly time exceeded\n");
2196 printf("Time exceeded, Bad Code: %d\n",
2200 pr_retip((struct ip6_hdr *)(icp + 1), end);
2202 case ICMP6_PARAM_PROB:
2203 printf("Parameter problem: ");
2204 switch (icp->icmp6_code) {
2205 case ICMP6_PARAMPROB_HEADER:
2206 printf("Erroneous Header ");
2208 case ICMP6_PARAMPROB_NEXTHEADER:
2209 printf("Unknown Nextheader ");
2211 case ICMP6_PARAMPROB_OPTION:
2212 printf("Unrecognized Option ");
2215 printf("Bad code(%d) ", icp->icmp6_code);
2218 printf("pointer = 0x%02x\n", (u_int32_t)ntohl(icp->icmp6_pptr));
2219 pr_retip((struct ip6_hdr *)(icp + 1), end);
2221 case ICMP6_ECHO_REQUEST:
2222 printf("Echo Request");
2223 /* XXX ID + Seq + Data */
2225 case ICMP6_ECHO_REPLY:
2226 printf("Echo Reply");
2227 /* XXX ID + Seq + Data */
2229 case ICMP6_MEMBERSHIP_QUERY:
2230 printf("Listener Query");
2232 case ICMP6_MEMBERSHIP_REPORT:
2233 printf("Listener Report");
2235 case ICMP6_MEMBERSHIP_REDUCTION:
2236 printf("Listener Done");
2238 case ND_ROUTER_SOLICIT:
2239 printf("Router Solicitation");
2241 case ND_ROUTER_ADVERT:
2242 printf("Router Advertisement");
2244 case ND_NEIGHBOR_SOLICIT:
2245 printf("Neighbor Solicitation");
2247 case ND_NEIGHBOR_ADVERT:
2248 printf("Neighbor Advertisement");
2251 red = (struct nd_redirect *)icp;
2252 printf("Redirect\n");
2253 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2255 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2256 printf("Destination: %s", ntop_buf);
2257 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2259 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2260 printf(" New Target: %s", ntop_buf);
2262 case ICMP6_NI_QUERY:
2263 printf("Node Information Query");
2264 /* XXX ID + Seq + Data */
2265 ni = (struct icmp6_nodeinfo *)icp;
2266 l = end - (u_char *)(ni + 1);
2268 switch (ntohs(ni->ni_qtype)) {
2272 case NI_QTYPE_SUPTYPES:
2273 printf("Supported qtypes");
2278 case NI_QTYPE_NODEADDR:
2281 case NI_QTYPE_IPV4ADDR:
2282 printf("IPv4 nodeaddr");
2285 printf("unknown qtype");
2288 if (options & F_VERBOSE) {
2289 switch (ni->ni_code) {
2290 case ICMP6_NI_SUBJ_IPV6:
2291 if (l == sizeof(struct in6_addr) &&
2292 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2293 sizeof(ntop_buf)) != NULL) {
2294 printf(", subject=%s(%s)",
2295 niqcode[ni->ni_code], ntop_buf);
2298 /* backward compat to -W */
2299 printf(", oldfqdn");
2301 printf(", invalid");
2305 case ICMP6_NI_SUBJ_FQDN:
2306 if (end == (u_char *)(ni + 1)) {
2307 printf(", no subject");
2310 printf(", subject=%s", niqcode[ni->ni_code]);
2311 cp = (const u_char *)(ni + 1);
2312 if (dnsdecode(&cp, end, NULL, dnsname,
2313 sizeof(dnsname)) != NULL)
2314 printf("(%s)", dnsname);
2316 printf("(invalid)");
2318 case ICMP6_NI_SUBJ_IPV4:
2319 if (l == sizeof(struct in_addr) &&
2320 inet_ntop(AF_INET, ni + 1, ntop_buf,
2321 sizeof(ntop_buf)) != NULL) {
2322 printf(", subject=%s(%s)",
2323 niqcode[ni->ni_code], ntop_buf);
2325 printf(", invalid");
2328 printf(", invalid");
2333 case ICMP6_NI_REPLY:
2334 printf("Node Information Reply");
2335 /* XXX ID + Seq + Data */
2336 ni = (struct icmp6_nodeinfo *)icp;
2338 switch (ntohs(ni->ni_qtype)) {
2342 case NI_QTYPE_SUPTYPES:
2343 printf("Supported qtypes");
2348 case NI_QTYPE_NODEADDR:
2351 case NI_QTYPE_IPV4ADDR:
2352 printf("IPv4 nodeaddr");
2355 printf("unknown qtype");
2358 if (options & F_VERBOSE) {
2359 if (ni->ni_code > sizeof(nircode) / sizeof(nircode[0]))
2360 printf(", invalid");
2362 printf(", %s", nircode[ni->ni_code]);
2366 printf("Bad ICMP type: %d", icp->icmp6_type);
2372 * Print an IP6 header.
2375 pr_iph(struct ip6_hdr *ip6)
2377 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2379 char ntop_buf[INET6_ADDRSTRLEN];
2381 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2382 tc = (tc >> 4) & 0x0f;
2383 tc |= (ip6->ip6_vfc << 4);
2385 printf("Vr TC Flow Plen Nxt Hlim\n");
2386 printf(" %1x %02x %05x %04x %02x %02x\n",
2387 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2388 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2389 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2390 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2391 printf("%s->", ntop_buf);
2392 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2393 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2394 printf("%s\n", ntop_buf);
2399 * Return an ascii host address as a dotted quad and optionally with
2403 pr_addr(struct sockaddr *addr, int addrlen)
2405 static char buf[NI_MAXHOST];
2408 if ((options & F_HOSTNAME) == 0)
2409 flag |= NI_NUMERICHOST;
2411 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0)
2419 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2422 pr_retip(struct ip6_hdr *ip6, u_char *end)
2424 u_char *cp = (u_char *)ip6, nh;
2427 if (end - (u_char *)ip6 < (int)sizeof(*ip6)) {
2432 hlen = sizeof(*ip6);
2436 while (end - cp >= 8) {
2438 case IPPROTO_HOPOPTS:
2440 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2441 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2443 case IPPROTO_DSTOPTS:
2445 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2446 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2448 case IPPROTO_FRAGMENT:
2450 hlen = sizeof(struct ip6_frag);
2451 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2453 case IPPROTO_ROUTING:
2455 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2456 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2461 hlen = (((struct ah *)cp)->ah_len+2) << 2;
2462 nh = ((struct ah *)cp)->ah_nxt;
2465 case IPPROTO_ICMPV6:
2466 printf("ICMP6: type = %d, code = %d\n",
2473 printf("TCP: from port %u, to port %u (decimal)\n",
2474 (*cp * 256 + *(cp + 1)),
2475 (*(cp + 2) * 256 + *(cp + 3)));
2478 printf("UDP: from port %u, to port %u (decimal)\n",
2479 (*cp * 256 + *(cp + 1)),
2480 (*(cp + 2) * 256 + *(cp + 3)));
2483 printf("Unknown Header(%d)\n", nh);
2487 if ((cp += hlen) >= end)
2502 fill(char *bp, char *patp)
2508 for (cp = patp; *cp; cp++)
2510 errx(1, "patterns must be specified as hex digits");
2512 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2513 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2514 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2515 &pat[13], &pat[14], &pat[15]);
2520 kk <= MAXDATALEN - (8 + (int)sizeof(struct tv32) + ii);
2522 for (jj = 0; jj < ii; ++jj)
2523 bp[jj + kk] = pat[jj];
2524 if (!(options & F_QUIET)) {
2525 printf("PATTERN: 0x");
2526 for (jj = 0; jj < ii; ++jj)
2527 printf("%02x", bp[jj] & 0xFF);
2533 #ifdef IPSEC_POLICY_IPSEC
2535 setpolicy(int so __unused, char *policy)
2540 return 0; /* ignore */
2542 buf = ipsec_set_policy(policy, strlen(policy));
2544 errx(1, "%s", ipsec_strerror());
2545 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2546 ipsec_get_policylen(buf)) < 0)
2547 warnx("Unable to set IPsec policy");
2561 u_int8_t digest[16];
2564 char hbuf[NI_MAXHOST];
2565 struct in6_addr in6;
2567 p = strchr(name, '.');
2569 p = name + strlen(name);
2571 if (l > 63 || l > sizeof(hbuf) - 1)
2572 return NULL; /*label too long*/
2573 strncpy(hbuf, name, l);
2574 hbuf[(int)l] = '\0';
2576 for (q = name; *q; q++) {
2577 if (isupper(*(unsigned char *)q))
2578 *q = tolower(*(unsigned char *)q);
2581 /* generate 8 bytes of pseudo-random value. */
2582 memset(&ctxt, 0, sizeof(ctxt));
2585 MD5Update(&ctxt, &c, sizeof(c));
2586 MD5Update(&ctxt, (unsigned char *)name, l);
2587 MD5Final(digest, &ctxt);
2589 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
2590 return NULL; /*XXX*/
2591 bcopy(digest, &in6.s6_addr[12], 4);
2593 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2596 return strdup(hbuf);
2603 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
2608 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
2612 #ifdef IPV6_USE_MIN_MTU
2616 "[-a addrtype] [-b bufsiz] [-c count] [-g gateway]\n"
2617 " [-h hoplimit] [-I interface] [-i wait] [-l preload]"
2618 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
2622 " [-p pattern] [-S sourceaddr] [-s packetsize] "
2623 "[hops ...] host\n");