1 /* $KAME: ping6.c,v 1.169 2003/07/25 06:01:47 itojun Exp $ */
4 * SPDX-License-Identifier: BSD-3-Clause
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */
37 * Copyright (c) 1989, 1993
38 * The Regents of the University of California. All rights reserved.
40 * This code is derived from software contributed to Berkeley by
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. Neither the name of the University nor the names of its contributors
52 * may be used to endorse or promote products derived from this software
53 * without specific prior written permission.
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70 static const char copyright[] =
71 "@(#) Copyright (c) 1989, 1993\n\
72 The Regents of the University of California. All rights reserved.\n";
76 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
80 #include <sys/cdefs.h>
81 __FBSDID("$FreeBSD$");
84 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
85 * measure round-trip-delays and packet loss across network paths.
89 * U. S. Army Ballistic Research Laboratory
93 * Public Domain. Distribution Unlimited.
95 * More statistics could always be gathered.
96 * This program has to run SUID to ROOT to access the ICMP socket.
100 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
101 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
102 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
103 * network attached to 1 or more interfaces)
106 #include <sys/param.h>
107 #include <sys/capsicum.h>
109 #include <sys/socket.h>
112 #include <net/route.h>
114 #include <netinet/in.h>
115 #include <netinet/ip6.h>
116 #include <netinet/icmp6.h>
117 #include <arpa/inet.h>
118 #include <arpa/nameser.h>
121 #include <capsicum_helpers.h>
122 #include <casper/cap_dns.h>
123 #include <libcasper.h>
134 #include <sysexits.h>
139 #include <netipsec/ah.h>
140 #include <netipsec/ipsec.h>
150 #define MAXPACKETLEN 131072
152 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
153 #define ICMP6ECHOTMLEN sizeof(struct tv32)
154 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
155 # define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */
156 /* FQDN case, 64 bits of nonce + 32 bits ttl */
157 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
158 #define EXTRA 256 /* for AH and various other headers. weird. */
159 #define DEFDATALEN ICMP6ECHOTMLEN
160 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
161 #define NROUTES 9 /* number of record route slots */
162 #define MAXWAIT 10000 /* max ms to wait for response */
163 #define MAXALARM (60 * 60) /* max seconds for alarm timeout */
165 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
166 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
167 #define SET(bit) (A(bit) |= B(bit))
168 #define CLR(bit) (A(bit) &= (~B(bit)))
169 #define TST(bit) (A(bit) & B(bit))
171 #define F_FLOOD 0x0001
172 #define F_INTERVAL 0x0002
173 #define F_PINGFILLED 0x0008
174 #define F_QUIET 0x0010
175 #define F_RROUTE 0x0020
176 #define F_SO_DEBUG 0x0040
177 #define F_VERBOSE 0x0100
179 #ifdef IPSEC_POLICY_IPSEC
180 #define F_POLICY 0x0400
182 #define F_AUTHHDR 0x0200
183 #define F_ENCRYPT 0x0400
184 #endif /*IPSEC_POLICY_IPSEC*/
186 #define F_NODEADDR 0x0800
187 #define F_FQDN 0x1000
188 #define F_INTERFACE 0x2000
189 #define F_SRCADDR 0x4000
190 #define F_HOSTNAME 0x10000
191 #define F_FQDNOLD 0x20000
192 #define F_NIGROUP 0x40000
193 #define F_SUPTYPES 0x80000
194 #define F_NOMINMTU 0x100000
195 #define F_ONCE 0x200000
196 #define F_AUDIBLE 0x400000
197 #define F_MISSED 0x800000
198 #define F_DONTFRAG 0x1000000
199 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
200 #define F_WAITTIME 0x2000000
201 static u_int options;
203 #define IN6LEN sizeof(struct in6_addr)
204 #define SA6LEN sizeof(struct sockaddr_in6)
205 #define DUMMY_PORT 10101
207 #define SIN6(s) ((struct sockaddr_in6 *)(s))
210 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
211 * number of received sequence numbers we can keep track of. Change 128
212 * to 8192 for complete accuracy...
214 #define MAX_DUP_CHK (8 * 8192)
215 static int mx_dup_ck = MAX_DUP_CHK;
216 static char rcvd_tbl[MAX_DUP_CHK / 8];
218 static struct sockaddr_in6 dst; /* who to ping6 */
219 static struct sockaddr_in6 src; /* src addr of this packet */
220 static socklen_t srclen;
221 static size_t datalen = DEFDATALEN;
222 static int ssend; /* send socket file descriptor */
223 static int srecv; /* receive socket file descriptor */
224 static u_char outpack[MAXPACKETLEN];
225 static char BSPACE = '\b'; /* characters written for flood */
226 static char BBELL = '\a'; /* characters written for AUDIBLE */
227 static char DOT = '.';
228 static char *hostname;
229 static int ident; /* process id to identify our packets */
230 static u_int8_t nonce[8]; /* nonce field for node information */
231 static int hoplimit = -1; /* hoplimit */
232 static u_char *packet = NULL;
233 static cap_channel_t *capdns;
236 static long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
237 static long npackets; /* max packets to transmit */
238 static long nreceived; /* # of packets we got back */
239 static long nrepeats; /* number of duplicates */
240 static long ntransmitted; /* sequence # for outbound packets = #sent */
241 static int interval = 1000; /* interval between packets in ms */
242 static int waittime = MAXWAIT; /* timeout for each packet */
243 static long nrcvtimeout = 0; /* # of packets we got back after waittime */
246 static int timing; /* flag to do timing */
247 static double tmin = 999999999.0; /* minimum round trip time */
248 static double tmax = 0.0; /* maximum round trip time */
249 static double tsum = 0.0; /* sum of all times, for doing average */
250 static double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
252 /* for node addresses */
253 static u_short naflags;
255 /* for ancillary data(advanced API) */
256 static struct msghdr smsghdr;
257 static struct iovec smsgiov;
258 static char *scmsg = 0;
260 static volatile sig_atomic_t seenint;
262 static volatile sig_atomic_t seeninfo;
265 int main(int, char *[]);
266 static cap_channel_t *capdns_setup(void);
267 static void fill(char *, char *);
268 static int get_hoplim(struct msghdr *);
269 static int get_pathmtu(struct msghdr *);
270 static struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
271 static void onsignal(int);
272 static void onint(int);
273 static size_t pingerlen(void);
274 static int pinger(void);
275 static const char *pr_addr(struct sockaddr *, int);
276 static void pr_icmph(struct icmp6_hdr *, u_char *);
277 static void pr_iph(struct ip6_hdr *);
278 static void pr_suptypes(struct icmp6_nodeinfo *, size_t);
279 static void pr_nodeaddr(struct icmp6_nodeinfo *, int);
280 static int myechoreply(const struct icmp6_hdr *);
281 static int mynireply(const struct icmp6_nodeinfo *);
282 static const char *dnsdecode(const u_char *, const u_char *, const u_char *,
284 static void pr_pack(u_char *, int, struct msghdr *);
285 static void pr_exthdrs(struct msghdr *);
286 static void pr_ip6opt(void *, size_t);
287 static void pr_rthdr(void *, size_t);
288 static int pr_bitrange(u_int32_t, int, int);
289 static void pr_retip(struct ip6_hdr *, u_char *);
290 static void summary(void);
291 static int setpolicy(int, char *);
292 static char *nigroup(char *, int);
293 static void usage(void);
296 main(int argc, char *argv[])
298 struct timespec last, intvl;
299 struct sockaddr_in6 from, *sin6;
300 struct addrinfo hints, *res;
301 struct sigaction si_sa;
303 int almost_done, ch, hold, packlen, preload, optval, error;
304 int nig_oldmcprefix = -1;
306 char *e, *target, *ifname = NULL, *gateway = NULL;
308 struct cmsghdr *scmsgp = NULL;
309 /* For control (ancillary) data received from recvmsg() */
310 u_char cm[CONTROLLEN];
311 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
316 struct in6_pktinfo pktinfo;
317 char *cmsg_pktinfo = NULL;
318 struct ip6_rthdr *rthdr = NULL;
319 #ifdef IPSEC_POLICY_IPSEC
320 char *policy_in = NULL;
321 char *policy_out = NULL;
326 #ifdef IPV6_USE_MIN_MTU
329 cap_rights_t rights_srecv;
330 cap_rights_t rights_ssend;
331 cap_rights_t rights_stdin;
333 /* just to be sure */
334 memset(&smsghdr, 0, sizeof(smsghdr));
335 memset(&smsgiov, 0, sizeof(smsgiov));
336 memset(&pktinfo, 0, sizeof(pktinfo));
338 intvl.tv_sec = interval / 1000;
339 intvl.tv_nsec = interval % 1000 * 1000000;
341 alarmtimeout = preload = 0;
342 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
343 capdns = capdns_setup();
347 #ifdef IPSEC_POLICY_IPSEC
351 #endif /*IPSEC_POLICY_IPSEC*/
353 while ((ch = getopt(argc, argv,
354 "k:b:c:DdfHe:m:I:i:l:unNop:qaAS:s:OvyYW:t:" ADDOPTS)) != -1) {
361 options &= ~F_NOUSERDATA;
362 options |= F_NODEADDR;
363 for (cp = optarg; *cp != '\0'; cp++) {
366 naflags |= NI_NODEADDR_FLAG_ALL;
370 naflags |= NI_NODEADDR_FLAG_COMPAT;
374 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
378 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
382 naflags |= NI_NODEADDR_FLAG_GLOBAL;
384 case 'A': /* experimental. not in the spec */
385 #ifdef NI_NODEADDR_FLAG_ANYCAST
386 naflags |= NI_NODEADDR_FLAG_ANYCAST;
390 "-a A is not supported on the platform");
401 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
404 lsockbufsize = strtoul(optarg, &e, 10);
405 sockbufsize = (int)lsockbufsize;
406 if (errno || !*optarg || *e ||
407 lsockbufsize > INT_MAX)
408 errx(1, "invalid socket buffer size");
411 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
415 npackets = strtol(optarg, &e, 10);
416 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
418 "illegal number of packets -- %s", optarg);
421 options |= F_DONTFRAG;
424 options |= F_SO_DEBUG;
429 errx(1, "Must be superuser to flood ping");
432 setbuf(stdout, (char *)NULL);
438 options |= F_HOSTNAME;
440 case 'm': /* hoplimit */
441 hoplimit = strtol(optarg, &e, 10);
442 if (*optarg == '\0' || *e != '\0')
443 errx(1, "illegal hoplimit %s", optarg);
444 if (255 < hoplimit || hoplimit < -1)
446 "illegal hoplimit -- %s", optarg);
450 options |= F_INTERFACE;
451 #ifndef USE_SIN6_SCOPE_ID
455 case 'i': /* wait between sending packets */
456 t = strtod(optarg, &e);
457 if (*optarg == '\0' || *e != '\0')
458 errx(1, "illegal timing interval %s", optarg);
459 if (t < 1 && getuid()) {
460 errx(1, "%s: only root may use interval < 1s",
463 intvl.tv_sec = (time_t)t;
465 (long)((t - intvl.tv_sec) * 1000000000);
466 if (intvl.tv_sec < 0)
467 errx(1, "illegal timing interval %s", optarg);
468 /* less than 1/hz does not make sense */
469 if (intvl.tv_sec == 0 && intvl.tv_nsec < 1000) {
470 warnx("too small interval, raised to .000001");
471 intvl.tv_nsec = 1000;
473 options |= F_INTERVAL;
478 errx(1, "Must be superuser to preload");
480 preload = strtol(optarg, &e, 10);
481 if (preload < 0 || *optarg == '\0' || *e != '\0')
482 errx(1, "illegal preload value -- %s", optarg);
485 #ifdef IPV6_USE_MIN_MTU
489 errx(1, "-%c is not supported on this platform", ch);
493 options &= ~F_HOSTNAME;
496 options |= F_NIGROUP;
502 case 'p': /* fill buffer with user pattern */
503 options |= F_PINGFILLED;
504 fill((char *)datap, optarg);
510 options |= F_AUDIBLE;
516 memset(&hints, 0, sizeof(struct addrinfo));
517 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
518 hints.ai_family = AF_INET6;
519 hints.ai_socktype = SOCK_RAW;
520 hints.ai_protocol = IPPROTO_ICMPV6;
522 error = cap_getaddrinfo(capdns, optarg, NULL, &hints, &res);
524 errx(1, "invalid source address: %s",
525 gai_strerror(error));
528 * res->ai_family must be AF_INET6 and res->ai_addrlen
529 * must be sizeof(src).
531 memcpy(&src, res->ai_addr, res->ai_addrlen);
532 srclen = res->ai_addrlen;
534 options |= F_SRCADDR;
536 case 's': /* size of packet to send */
537 datalen = strtol(optarg, &e, 10);
538 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
539 errx(1, "illegal datalen value -- %s", optarg);
540 if (datalen > MAXDATALEN) {
542 "datalen value too large, maximum is %d",
547 options &= ~F_NOUSERDATA;
548 options |= F_SUPTYPES;
551 options |= F_VERBOSE;
554 options &= ~F_NOUSERDATA;
558 options &= ~F_NOUSERDATA;
559 options |= F_FQDNOLD;
562 t = strtod(optarg, &e);
563 if (*e || e == optarg || t > (double)INT_MAX)
564 err(EX_USAGE, "invalid timing interval: `%s'",
566 options |= F_WAITTIME;
570 alarmtimeout = strtoul(optarg, &e, 0);
571 if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX))
572 errx(EX_USAGE, "invalid timeout: `%s'",
574 if (alarmtimeout > MAXALARM)
575 errx(EX_USAGE, "invalid timeout: `%s' > %d",
578 struct itimerval itv;
580 timerclear(&itv.it_interval);
581 timerclear(&itv.it_value);
582 itv.it_value.tv_sec = (time_t)alarmtimeout;
583 if (setitimer(ITIMER_REAL, &itv, NULL) != 0)
588 #ifdef IPSEC_POLICY_IPSEC
591 if (!strncmp("in", optarg, 2)) {
592 if ((policy_in = strdup(optarg)) == NULL)
594 } else if (!strncmp("out", optarg, 3)) {
595 if ((policy_out = strdup(optarg)) == NULL)
598 errx(1, "invalid security policy");
602 options |= F_AUTHHDR;
605 options |= F_ENCRYPT;
607 #endif /*IPSEC_POLICY_IPSEC*/
624 #ifdef IPV6_RECVRTHDR /* 2292bis */
625 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
628 rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1);
631 errx(1, "too many intermediate hops");
637 if (options & F_NIGROUP) {
638 target = nigroup(argv[argc - 1], nig_oldmcprefix);
639 if (target == NULL) {
644 target = argv[argc - 1];
646 /* cap_getaddrinfo */
647 memset(&hints, 0, sizeof(struct addrinfo));
648 hints.ai_flags = AI_CANONNAME;
649 hints.ai_family = AF_INET6;
650 hints.ai_socktype = SOCK_RAW;
651 hints.ai_protocol = IPPROTO_ICMPV6;
653 error = cap_getaddrinfo(capdns, target, NULL, &hints, &res);
655 errx(1, "%s", gai_strerror(error));
656 if (res->ai_canonname)
657 hostname = strdup(res->ai_canonname);
662 errx(1, "cap_getaddrinfo failed");
664 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
666 if ((ssend = socket(res->ai_family, res->ai_socktype,
667 res->ai_protocol)) < 0)
668 err(1, "socket ssend");
669 if ((srecv = socket(res->ai_family, res->ai_socktype,
670 res->ai_protocol)) < 0)
671 err(1, "socket srecv");
674 /* set the source address if specified. */
675 if ((options & F_SRCADDR) != 0) {
676 /* properly fill sin6_scope_id */
677 if (IN6_IS_ADDR_LINKLOCAL(&src.sin6_addr) && (
678 IN6_IS_ADDR_LINKLOCAL(&dst.sin6_addr) ||
679 IN6_IS_ADDR_MC_LINKLOCAL(&dst.sin6_addr) ||
680 IN6_IS_ADDR_MC_NODELOCAL(&dst.sin6_addr))) {
681 if (src.sin6_scope_id == 0)
682 src.sin6_scope_id = dst.sin6_scope_id;
683 if (dst.sin6_scope_id == 0)
684 dst.sin6_scope_id = src.sin6_scope_id;
686 if (bind(ssend, (struct sockaddr *)&src, srclen) != 0)
689 /* set the gateway (next hop) if specified */
691 memset(&hints, 0, sizeof(hints));
692 hints.ai_family = AF_INET6;
693 hints.ai_socktype = SOCK_RAW;
694 hints.ai_protocol = IPPROTO_ICMPV6;
696 error = cap_getaddrinfo(capdns, gateway, NULL, &hints, &res);
698 errx(1, "cap_getaddrinfo for the gateway %s: %s",
699 gateway, gai_strerror(error));
701 if (res->ai_next && (options & F_VERBOSE))
702 warnx("gateway resolves to multiple addresses");
704 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_NEXTHOP,
705 res->ai_addr, res->ai_addrlen)) {
706 err(1, "setsockopt(IPV6_NEXTHOP)");
713 * let the kerel pass extension headers of incoming packets,
714 * for privileged socket options
716 if ((options & F_VERBOSE) != 0) {
719 #ifdef IPV6_RECVHOPOPTS
720 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
722 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
723 #else /* old adv. API */
724 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
726 err(1, "setsockopt(IPV6_HOPOPTS)");
728 #ifdef IPV6_RECVDSTOPTS
729 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
731 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
732 #else /* old adv. API */
733 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
735 err(1, "setsockopt(IPV6_DSTOPTS)");
737 #ifdef IPV6_RECVRTHDRDSTOPTS
738 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
740 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
744 /* revoke root privilege */
745 if (seteuid(getuid()) != 0)
746 err(1, "seteuid() failed");
747 if (setuid(getuid()) != 0)
748 err(1, "setuid() failed");
750 if ((options & F_FLOOD) && (options & F_INTERVAL))
751 errx(1, "-f and -i incompatible options");
753 if ((options & F_NOUSERDATA) == 0) {
754 if (datalen >= sizeof(struct tv32)) {
755 /* we can time transfer */
759 /* in F_VERBOSE case, we may get non-echoreply packets*/
760 if (options & F_VERBOSE)
761 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
763 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
765 /* suppress timing for node information query */
768 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
771 if (!(packet = (u_char *)malloc((u_int)packlen)))
772 err(1, "Unable to allocate packet");
773 if (!(options & F_PINGFILLED))
774 for (i = ICMP6ECHOLEN; i < packlen; ++i)
777 ident = getpid() & 0xFFFF;
778 arc4random_buf(nonce, sizeof(nonce));
780 if (options & F_DONTFRAG)
781 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_DONTFRAG,
782 &optval, sizeof(optval)) == -1)
783 err(1, "IPV6_DONTFRAG");
786 if (options & F_SO_DEBUG) {
787 (void)setsockopt(ssend, SOL_SOCKET, SO_DEBUG, (char *)&hold,
789 (void)setsockopt(srecv, SOL_SOCKET, SO_DEBUG, (char *)&hold,
792 optval = IPV6_DEFHLIM;
793 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
794 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
795 &optval, sizeof(optval)) == -1)
796 err(1, "IPV6_MULTICAST_HOPS");
797 #ifdef IPV6_USE_MIN_MTU
799 optval = mflag > 1 ? 0 : 1;
801 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
802 &optval, sizeof(optval)) == -1)
803 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
805 #ifdef IPV6_RECVPATHMTU
808 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVPATHMTU,
809 &optval, sizeof(optval)) == -1)
810 err(1, "setsockopt(IPV6_RECVPATHMTU)");
812 #endif /* IPV6_RECVPATHMTU */
813 #endif /* IPV6_USE_MIN_MTU */
816 #ifdef IPSEC_POLICY_IPSEC
817 if (options & F_POLICY) {
818 if (setpolicy(srecv, policy_in) < 0)
819 errx(1, "%s", ipsec_strerror());
820 if (setpolicy(ssend, policy_out) < 0)
821 errx(1, "%s", ipsec_strerror());
824 if (options & F_AUTHHDR) {
825 optval = IPSEC_LEVEL_REQUIRE;
826 #ifdef IPV6_AUTH_TRANS_LEVEL
827 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
828 &optval, sizeof(optval)) == -1)
829 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
830 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
831 &optval, sizeof(optval)) == -1)
832 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
834 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
835 &optval, sizeof(optval)) == -1)
836 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
837 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
838 &optval, sizeof(optval)) == -1)
839 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
842 if (options & F_ENCRYPT) {
843 optval = IPSEC_LEVEL_REQUIRE;
844 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
845 &optval, sizeof(optval)) == -1)
846 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
847 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
848 &optval, sizeof(optval)) == -1)
849 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
851 #endif /*IPSEC_POLICY_IPSEC*/
856 struct icmp6_filter filt;
857 if (!(options & F_VERBOSE)) {
858 ICMP6_FILTER_SETBLOCKALL(&filt);
859 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
860 (options & F_NODEADDR) || (options & F_SUPTYPES))
861 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
863 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
865 ICMP6_FILTER_SETPASSALL(&filt);
867 if (setsockopt(srecv, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
869 err(1, "setsockopt(ICMP6_FILTER)");
871 #endif /*ICMP6_FILTER*/
873 /* let the kerel pass extension headers of incoming packets */
874 if ((options & F_VERBOSE) != 0) {
877 #ifdef IPV6_RECVRTHDR
878 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
880 err(1, "setsockopt(IPV6_RECVRTHDR)");
881 #else /* old adv. API */
882 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RTHDR, &opton,
884 err(1, "setsockopt(IPV6_RTHDR)");
890 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
891 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
892 &optval, sizeof(optval)) == -1)
893 err(1, "IPV6_MULTICAST_LOOP");
896 /* Specify the outgoing interface and/or the source address */
898 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
901 ip6optlen += CMSG_SPACE(sizeof(int));
903 /* set IP6 packet options */
905 if ((scmsg = (char *)malloc(ip6optlen)) == NULL)
906 errx(1, "can't allocate enough memory");
907 smsghdr.msg_control = (caddr_t)scmsg;
908 smsghdr.msg_controllen = ip6optlen;
909 scmsgp = CMSG_FIRSTHDR(&smsghdr);
912 cmsg_pktinfo = CMSG_DATA(scmsgp);
913 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
914 scmsgp->cmsg_level = IPPROTO_IPV6;
915 scmsgp->cmsg_type = IPV6_PKTINFO;
916 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
919 /* set the outgoing interface */
921 #ifndef USE_SIN6_SCOPE_ID
922 /* pktinfo must have already been allocated */
923 if ((pktinfo.ipi6_ifindex = if_nametoindex(ifname)) == 0)
924 errx(1, "%s: invalid interface name", ifname);
926 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
927 errx(1, "%s: invalid interface name", ifname);
930 if (hoplimit != -1) {
931 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
932 scmsgp->cmsg_level = IPPROTO_IPV6;
933 scmsgp->cmsg_type = IPV6_HOPLIMIT;
934 memcpy(CMSG_DATA(scmsgp), &hoplimit, sizeof(hoplimit));
936 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
939 if (argc > 1) { /* some intermediate addrs are specified */
943 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
944 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
945 scmsgp->cmsg_level = IPPROTO_IPV6;
946 scmsgp->cmsg_type = IPV6_RTHDR;
947 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
948 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
949 IPV6_RTHDR_TYPE_0, argc - 1);
951 errx(1, "can't initialize rthdr");
953 for (hops = 0; hops < argc - 1; hops++) {
954 memset(&hints, 0, sizeof(hints));
955 hints.ai_family = AF_INET6;
957 if ((error = cap_getaddrinfo(capdns, argv[hops], NULL, &hints,
959 errx(1, "%s", gai_strerror(error));
960 if (res->ai_addr->sa_family != AF_INET6)
962 "bad addr family of an intermediate addr");
963 sin6 = (struct sockaddr_in6 *)(void *)res->ai_addr;
964 if (inet6_rth_add(rthdr, &sin6->sin6_addr))
965 errx(1, "can't add an intermediate node");
969 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
972 /* From now on we will use only reverse DNS lookups. */
974 if (capdns != NULL) {
975 const char *types[1];
977 types[0] = "ADDR2NAME";
978 if (cap_dns_type_limit(capdns, types, nitems(types)) < 0)
979 err(1, "unable to limit access to system.dns service");
982 if (!(options & F_SRCADDR)) {
984 * get the source address. XXX since we revoked the root
985 * privilege, we cannot use a raw socket for this.
988 socklen_t len = sizeof(src);
990 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
991 err(1, "UDP socket");
993 src.sin6_family = AF_INET6;
994 src.sin6_addr = dst.sin6_addr;
995 src.sin6_port = ntohs(DUMMY_PORT);
996 src.sin6_scope_id = dst.sin6_scope_id;
999 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
1000 (void *)&pktinfo, sizeof(pktinfo)))
1001 err(1, "UDP setsockopt(IPV6_PKTINFO)");
1003 if (hoplimit != -1 &&
1004 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
1005 (void *)&hoplimit, sizeof(hoplimit)))
1006 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
1008 if (hoplimit != -1 &&
1009 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
1010 (void *)&hoplimit, sizeof(hoplimit)))
1011 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
1014 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
1015 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
1016 err(1, "UDP setsockopt(IPV6_RTHDR)");
1018 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
1019 err(1, "UDP connect");
1021 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
1022 err(1, "getsockname");
1027 /* Save pktinfo in the ancillary data. */
1029 memcpy(cmsg_pktinfo, &pktinfo, sizeof(pktinfo));
1031 if (connect(ssend, (struct sockaddr *)&dst, sizeof(dst)) != 0)
1032 err(1, "connect() ssend");
1034 caph_cache_catpages();
1035 if (caph_enter_casper() < 0)
1036 err(1, "caph_enter_casper");
1038 cap_rights_init(&rights_stdin);
1039 if (caph_rights_limit(STDIN_FILENO, &rights_stdin) < 0)
1040 err(1, "caph_rights_limit stdin");
1041 if (caph_limit_stdout() < 0)
1042 err(1, "caph_limit_stdout");
1043 if (caph_limit_stderr() < 0)
1044 err(1, "caph_limit_stderr");
1046 cap_rights_init(&rights_srecv, CAP_RECV, CAP_EVENT, CAP_SETSOCKOPT);
1047 if (caph_rights_limit(srecv, &rights_srecv) < 0)
1048 err(1, "caph_rights_limit srecv");
1049 cap_rights_init(&rights_ssend, CAP_SEND, CAP_SETSOCKOPT);
1050 if (caph_rights_limit(ssend, &rights_ssend) < 0)
1051 err(1, "caph_rights_limit ssend");
1053 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
1055 if (datalen > (size_t)sockbufsize)
1056 warnx("you need -b to increase socket buffer size");
1057 if (setsockopt(ssend, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
1058 sizeof(sockbufsize)) < 0)
1059 err(1, "setsockopt(SO_SNDBUF)");
1060 if (setsockopt(srecv, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
1061 sizeof(sockbufsize)) < 0)
1062 err(1, "setsockopt(SO_RCVBUF)");
1065 if (datalen > 8 * 1024) /*XXX*/
1066 warnx("you need -b to increase socket buffer size");
1068 * When pinging the broadcast address, you can get a lot of
1069 * answers. Doing something so evil is useful if you are trying
1070 * to stress the ethernet, or just want to fill the arp cache
1071 * to get some stuff for /etc/ethers.
1074 setsockopt(srecv, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
1080 #ifndef USE_SIN6_SCOPE_ID
1081 #ifdef IPV6_RECVPKTINFO
1082 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
1083 sizeof(optval)) < 0)
1084 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
1085 #else /* old adv. API */
1086 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
1087 sizeof(optval)) < 0)
1088 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
1090 #endif /* USE_SIN6_SCOPE_ID */
1091 #ifdef IPV6_RECVHOPLIMIT
1092 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
1093 sizeof(optval)) < 0)
1094 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
1095 #else /* old adv. API */
1096 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
1097 sizeof(optval)) < 0)
1098 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
1101 cap_rights_clear(&rights_srecv, CAP_SETSOCKOPT);
1102 if (caph_rights_limit(srecv, &rights_srecv) < 0)
1103 err(1, "caph_rights_limit srecv setsockopt");
1104 cap_rights_clear(&rights_ssend, CAP_SETSOCKOPT);
1105 if (caph_rights_limit(ssend, &rights_ssend) < 0)
1106 err(1, "caph_rights_limit ssend setsockopt");
1108 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
1109 (unsigned long)(pingerlen() - 8));
1110 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
1111 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
1116 if (npackets != 0 && preload > npackets)
1121 clock_gettime(CLOCK_MONOTONIC, &last);
1123 sigemptyset(&si_sa.sa_mask);
1125 si_sa.sa_handler = onsignal;
1126 if (sigaction(SIGINT, &si_sa, 0) == -1)
1127 err(EX_OSERR, "sigaction SIGINT");
1130 if (sigaction(SIGINFO, &si_sa, 0) == -1)
1131 err(EX_OSERR, "sigaction SIGINFO");
1134 if (alarmtimeout > 0) {
1135 if (sigaction(SIGALRM, &si_sa, 0) == -1)
1136 err(EX_OSERR, "sigaction SIGALRM");
1138 if (options & F_FLOOD) {
1140 intvl.tv_nsec = 10000000;
1144 while (seenint == 0) {
1145 struct timespec now, timeout;
1147 struct iovec iov[2];
1151 /* signal handling */
1162 FD_SET(srecv, &rfds);
1163 clock_gettime(CLOCK_MONOTONIC, &now);
1164 timespecadd(&last, &intvl, &timeout);
1165 timespecsub(&timeout, &now, &timeout);
1166 if (timeout.tv_sec < 0)
1167 timespecclear(&timeout);
1169 n = pselect(srecv + 1, &rfds, NULL, NULL, &timeout, NULL);
1171 continue; /* EINTR */
1173 m.msg_name = (caddr_t)&from;
1174 m.msg_namelen = sizeof(from);
1175 memset(&iov, 0, sizeof(iov));
1176 iov[0].iov_base = (caddr_t)packet;
1177 iov[0].iov_len = packlen;
1180 memset(cm, 0, CONTROLLEN);
1181 m.msg_control = (void *)cm;
1182 m.msg_controllen = CONTROLLEN;
1184 cc = recvmsg(srecv, &m, 0);
1186 if (errno != EINTR) {
1191 } else if (cc == 0) {
1195 * receive control messages only. Process the
1196 * exceptions (currently the only possibility is
1197 * a path MTU notification.)
1199 if ((mtu = get_pathmtu(&m)) > 0) {
1200 if ((options & F_VERBOSE) != 0) {
1201 printf("new path MTU (%d) is "
1208 * an ICMPv6 message (probably an echoreply)
1211 pr_pack(packet, cc, &m);
1213 if (((options & F_ONCE) != 0 && nreceived > 0) ||
1214 (npackets > 0 && nreceived >= npackets))
1217 if (n == 0 || (options & F_FLOOD)) {
1218 if (npackets == 0 || ntransmitted < npackets)
1225 * If we're not transmitting any more packets,
1226 * change the timer to wait two round-trip times
1227 * if we've received any packets or (waittime)
1228 * milliseconds if we haven't.
1232 intvl.tv_sec = 2 * tmax / 1000;
1233 if (intvl.tv_sec == 0)
1236 intvl.tv_sec = waittime / 1000;
1238 waittime % 1000 * 1000000;
1241 clock_gettime(CLOCK_MONOTONIC, &last);
1242 if (ntransmitted - nreceived - 1 > nmissedmax) {
1243 nmissedmax = ntransmitted - nreceived - 1;
1244 if (options & F_MISSED)
1245 (void)write(STDOUT_FILENO, &BBELL, 1);
1249 sigemptyset(&si_sa.sa_mask);
1251 si_sa.sa_handler = SIG_IGN;
1252 sigaction(SIGINT, &si_sa, 0);
1253 sigaction(SIGALRM, &si_sa, 0);
1259 exit(nreceived == 0 ? 2 : 0);
1281 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1282 * will be added on by the kernel. The ID field is our UNIX process ID,
1283 * and the sequence number is an ascending integer. The first 8 bytes
1284 * of the data portion are used to hold a UNIX "timespec" struct in VAX
1285 * byte-order, to compute the round-trip time.
1292 if (options & F_FQDN)
1293 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1294 else if (options & F_FQDNOLD)
1296 else if (options & F_NODEADDR)
1297 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1298 else if (options & F_SUPTYPES)
1301 l = ICMP6ECHOLEN + datalen;
1309 struct icmp6_hdr *icp;
1310 struct iovec iov[2];
1312 struct icmp6_nodeinfo *nip;
1315 if (npackets && ntransmitted >= npackets)
1316 return(-1); /* no more transmission */
1318 icp = (struct icmp6_hdr *)outpack;
1319 nip = (struct icmp6_nodeinfo *)outpack;
1320 memset(icp, 0, sizeof(*icp));
1321 icp->icmp6_cksum = 0;
1322 seq = ntransmitted++;
1323 CLR(seq % mx_dup_ck);
1325 if (options & F_FQDN) {
1328 icp->icmp6_type = ICMP6_NI_QUERY;
1329 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1330 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1331 nip->ni_flags = htons(0);
1333 memcpy(nip->icmp6_ni_nonce, nonce,
1334 sizeof(nip->icmp6_ni_nonce));
1336 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1338 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1339 sizeof(dst.sin6_addr));
1340 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1342 } else if (options & F_FQDNOLD) {
1344 /* packet format in 03 draft - no Subject data on queries */
1345 icp->icmp6_type = ICMP6_NI_QUERY;
1346 icp->icmp6_code = 0; /* code field is always 0 */
1347 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1348 nip->ni_flags = htons(0);
1350 memcpy(nip->icmp6_ni_nonce, nonce,
1351 sizeof(nip->icmp6_ni_nonce));
1353 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1357 } else if (options & F_NODEADDR) {
1360 icp->icmp6_type = ICMP6_NI_QUERY;
1361 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1362 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1363 nip->ni_flags = naflags;
1365 memcpy(nip->icmp6_ni_nonce, nonce,
1366 sizeof(nip->icmp6_ni_nonce));
1368 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1370 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1371 sizeof(dst.sin6_addr));
1372 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1374 } else if (options & F_SUPTYPES) {
1377 icp->icmp6_type = ICMP6_NI_QUERY;
1378 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1379 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1380 /* we support compressed bitmap */
1381 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1383 memcpy(nip->icmp6_ni_nonce, nonce,
1384 sizeof(nip->icmp6_ni_nonce));
1386 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1391 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1392 icp->icmp6_code = 0;
1393 icp->icmp6_id = htons(ident);
1394 icp->icmp6_seq = htons(seq);
1398 (void)clock_gettime(CLOCK_MONOTONIC, &tv);
1400 * Truncate seconds down to 32 bits in order
1401 * to fit the timestamp within 8 bytes of the
1402 * packet. We're only concerned with
1403 * durations, not absolute times.
1405 tv32.tv32_sec = (uint32_t)htonl(tv.tv_sec);
1406 tv32.tv32_nsec = (uint32_t)htonl(tv.tv_nsec);
1407 memcpy(&outpack[ICMP6ECHOLEN], &tv32, sizeof(tv32));
1409 cc = ICMP6ECHOLEN + datalen;
1413 if (pingerlen() != cc)
1414 errx(1, "internal error; length mismatch");
1417 memset(&iov, 0, sizeof(iov));
1418 iov[0].iov_base = (caddr_t)outpack;
1419 iov[0].iov_len = cc;
1420 smsghdr.msg_iov = iov;
1421 smsghdr.msg_iovlen = 1;
1423 i = sendmsg(ssend, &smsghdr, 0);
1425 if (i < 0 || i != cc) {
1428 (void)printf("ping6: wrote %s %d chars, ret=%d\n",
1431 if (!(options & F_QUIET) && options & F_FLOOD)
1432 (void)write(STDOUT_FILENO, &DOT, 1);
1438 myechoreply(const struct icmp6_hdr *icp)
1440 if (ntohs(icp->icmp6_id) == ident)
1447 mynireply(const struct icmp6_nodeinfo *nip)
1449 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1450 nonce + sizeof(u_int16_t),
1451 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1458 * Decode a name from a DNS message.
1460 * Format of the message is described in RFC 1035 subsection 4.1.4.
1463 * sp - Pointer to a DNS pointer octet or to the first octet of a label
1465 * ep - Pointer to the end of the message (one step past the last octet).
1466 * base - Pointer to the beginning of the message.
1467 * buf - Buffer into which the decoded name will be saved.
1468 * bufsiz - Size of the buffer 'buf'.
1471 * Pointer to an octet immediately following the ending zero octet
1472 * of the decoded label, or NULL if an error occured.
1475 dnsdecode(const u_char *sp, const u_char *ep, const u_char *base, char *buf,
1480 char cresult[MAXDNAME + 1];
1491 if (i == 0 || cp != sp) {
1492 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1493 return NULL; /*result overrun*/
1499 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1500 /* DNS compression */
1504 comp = base + (i & 0x3f);
1505 if (dnsdecode(comp, cp, base, cresult,
1506 sizeof(cresult)) == NULL)
1508 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1509 return NULL; /*result overrun*/
1511 } else if ((i & 0x3f) == i) {
1513 return NULL; /*source overrun*/
1514 while (i-- > 0 && cp < ep) {
1515 l = snprintf(cresult, sizeof(cresult),
1516 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1517 if ((size_t)l >= sizeof(cresult) || l < 0)
1519 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1520 return NULL; /*result overrun*/
1524 return NULL; /*invalid label*/
1527 return NULL; /*not terminated*/
1534 * Print out the packet, if it came from us. This logic is necessary
1535 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1536 * which arrive ('tis only fair). This permits multiple copies of this
1537 * program to be run without having intermingled output (or statistics!).
1540 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1542 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1543 struct icmp6_hdr *icp;
1544 struct icmp6_nodeinfo *ni;
1547 struct sockaddr *from;
1549 const u_char *cp = NULL;
1550 u_char *dp, *end = buf + cc;
1551 struct in6_pktinfo *pktinfo = NULL;
1552 struct timespec tv, tp;
1554 double triptime = 0;
1559 char dnsname[MAXDNAME + 1];
1561 (void)clock_gettime(CLOCK_MONOTONIC, &tv);
1563 if (!mhdr || !mhdr->msg_name ||
1564 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1565 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1566 if (options & F_VERBOSE)
1567 warnx("invalid peername");
1570 from = (struct sockaddr *)mhdr->msg_name;
1571 fromlen = mhdr->msg_namelen;
1572 if (cc < (int)sizeof(struct icmp6_hdr)) {
1573 if (options & F_VERBOSE)
1574 warnx("packet too short (%d bytes) from %s", cc,
1575 pr_addr(from, fromlen));
1578 if (((mhdr->msg_flags & MSG_CTRUNC) != 0) &&
1579 (options & F_VERBOSE) != 0)
1580 warnx("some control data discarded, insufficient buffer size");
1581 icp = (struct icmp6_hdr *)buf;
1582 ni = (struct icmp6_nodeinfo *)buf;
1585 if ((hoplim = get_hoplim(mhdr)) == -1) {
1586 warnx("failed to get receiving hop limit");
1589 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1590 warnx("failed to get receiving packet information");
1594 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1595 seq = ntohs(icp->icmp6_seq);
1598 memcpy(&tpp, icp + 1, sizeof(tpp));
1599 tp.tv_sec = ntohl(tpp.tv32_sec);
1600 tp.tv_nsec = ntohl(tpp.tv32_nsec);
1601 timespecsub(&tv, &tp, &tv);
1602 triptime = ((double)tv.tv_sec) * 1000.0 +
1603 ((double)tv.tv_nsec) / 1000000.0;
1605 tsumsq += triptime * triptime;
1606 if (triptime < tmin)
1608 if (triptime > tmax)
1612 if (TST(seq % mx_dup_ck)) {
1617 SET(seq % mx_dup_ck);
1621 if (options & F_QUIET)
1624 if (options & F_WAITTIME && triptime > waittime) {
1629 if (options & F_FLOOD)
1630 (void)write(STDOUT_FILENO, &BSPACE, 1);
1632 if (options & F_AUDIBLE)
1633 (void)write(STDOUT_FILENO, &BBELL, 1);
1634 (void)printf("%d bytes from %s, icmp_seq=%u", cc,
1635 pr_addr(from, fromlen), seq);
1636 (void)printf(" hlim=%d", hoplim);
1637 if ((options & F_VERBOSE) != 0) {
1638 struct sockaddr_in6 dstsa;
1640 memset(&dstsa, 0, sizeof(dstsa));
1641 dstsa.sin6_family = AF_INET6;
1642 dstsa.sin6_len = sizeof(dstsa);
1643 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1644 dstsa.sin6_addr = pktinfo->ipi6_addr;
1645 (void)printf(" dst=%s",
1646 pr_addr((struct sockaddr *)&dstsa,
1650 (void)printf(" time=%.3f ms", triptime);
1652 (void)printf("(DUP!)");
1653 /* check the data */
1654 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1655 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1656 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1658 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
1663 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1664 memcpy(&seq, ni->icmp6_ni_nonce, sizeof(seq));
1667 if (TST(seq % mx_dup_ck)) {
1672 SET(seq % mx_dup_ck);
1676 if (options & F_QUIET)
1679 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1681 switch (ntohs(ni->ni_code)) {
1682 case ICMP6_NI_SUCCESS:
1684 case ICMP6_NI_REFUSED:
1685 printf("refused, type 0x%x", ntohs(ni->ni_type));
1687 case ICMP6_NI_UNKNOWN:
1688 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1691 printf("unknown code 0x%x, type 0x%x",
1692 ntohs(ni->ni_code), ntohs(ni->ni_type));
1696 switch (ntohs(ni->ni_qtype)) {
1698 printf("NodeInfo NOOP");
1700 case NI_QTYPE_SUPTYPES:
1701 pr_suptypes(ni, end - (u_char *)ni);
1703 case NI_QTYPE_NODEADDR:
1704 pr_nodeaddr(ni, end - (u_char *)ni);
1707 default: /* XXX: for backward compatibility */
1708 cp = (u_char *)ni + ICMP6_NIRLEN;
1709 if (buf[off + ICMP6_NIRLEN] ==
1710 cc - off - ICMP6_NIRLEN - 1)
1715 cp++; /* skip length */
1717 safeputc(*cp & 0xff);
1723 cp = dnsdecode((const u_char *)cp, end,
1724 (const u_char *)(ni + 1), dnsname,
1731 * name-lookup special handling for
1734 if (cp + 1 <= end && !*cp &&
1735 strlen(dnsname) > 0) {
1736 dnsname[strlen(dnsname) - 1] = '\0';
1739 printf("%s%s", i > 0 ? "," : "",
1743 if (options & F_VERBOSE) {
1748 (void)printf(" ("); /*)*/
1750 switch (ni->ni_code) {
1751 case ICMP6_NI_REFUSED:
1752 (void)printf("refused");
1755 case ICMP6_NI_UNKNOWN:
1756 (void)printf("unknown qtype");
1761 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1762 /* case of refusion, unknown */
1767 memcpy(&t, &buf[off+ICMP6ECHOLEN+8], sizeof(t));
1768 ttl = (int32_t)ntohl(t);
1771 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1772 (void)printf("TTL=%d:meaningless",
1776 (void)printf("TTL=%d:invalid",
1779 (void)printf("TTL=%d", ttl);
1789 cp = (u_char *)ni + ICMP6_NIRLEN;
1798 if (buf[off + ICMP6_NIRLEN] !=
1799 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1802 (void)printf("invalid namelen:%d/%lu",
1803 buf[off + ICMP6_NIRLEN],
1804 (u_long)cc - off - ICMP6_NIRLEN - 1);
1814 /* We've got something other than an ECHOREPLY */
1815 if (!(options & F_VERBOSE))
1817 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1821 if (!(options & F_FLOOD)) {
1822 (void)putchar('\n');
1823 if (options & F_VERBOSE)
1825 (void)fflush(stdout);
1831 pr_exthdrs(struct msghdr *mhdr)
1838 bufp = mhdr->msg_control;
1839 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1840 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1841 if (cm->cmsg_level != IPPROTO_IPV6)
1844 bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp);
1847 switch (cm->cmsg_type) {
1849 printf(" HbH Options: ");
1850 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1853 #ifdef IPV6_RTHDRDSTOPTS
1854 case IPV6_RTHDRDSTOPTS:
1856 printf(" Dst Options: ");
1857 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1860 printf(" Routing: ");
1861 pr_rthdr(CMSG_DATA(cm), (size_t)bufsize);
1868 pr_ip6opt(void *extbuf, size_t bufsize)
1870 struct ip6_hbh *ext;
1873 socklen_t extlen, len;
1879 ext = (struct ip6_hbh *)extbuf;
1880 extlen = (ext->ip6h_len + 1) * 8;
1881 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1882 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1885 * Bounds checking on the ancillary data buffer:
1886 * subtract the size of a cmsg structure from the buffer size.
1888 if (bufsize < (extlen + CMSG_SPACE(0))) {
1889 extlen = bufsize - CMSG_SPACE(0);
1890 warnx("options truncated, showing only %u (total=%u)",
1891 (unsigned int)(extlen / 8 - 1),
1892 (unsigned int)(ext->ip6h_len));
1897 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1898 &type, &len, &databuf);
1899 if (currentlen == -1)
1903 * Note that inet6_opt_next automatically skips any padding
1908 offset = inet6_opt_get_val(databuf, offset,
1909 &value4, sizeof(value4));
1910 printf(" Jumbo Payload Opt: Length %u\n",
1911 (u_int32_t)ntohl(value4));
1913 case IP6OPT_ROUTER_ALERT:
1915 offset = inet6_opt_get_val(databuf, offset,
1916 &value2, sizeof(value2));
1917 printf(" Router Alert Opt: Type %u\n",
1921 printf(" Received Opt %u len %lu\n",
1922 type, (unsigned long)len);
1930 pr_rthdr(void *extbuf, size_t bufsize)
1932 struct in6_addr *in6;
1933 char ntopbuf[INET6_ADDRSTRLEN];
1934 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1935 int i, segments, origsegs, rthsize, size0, size1;
1937 /* print fixed part of the header */
1938 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1939 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1940 if ((segments = inet6_rth_segments(extbuf)) >= 0) {
1941 printf("%d segments, ", segments);
1942 printf("%d left\n", rh->ip6r_segleft);
1944 printf("segments unknown, ");
1945 printf("%d left\n", rh->ip6r_segleft);
1950 * Bounds checking on the ancillary data buffer. When calculating
1951 * the number of items to show keep in mind:
1952 * - The size of the cmsg structure
1953 * - The size of one segment (the size of a Type 0 routing header)
1954 * - When dividing add a fudge factor of one in case the
1955 * dividend is not evenly divisible by the divisor
1957 rthsize = (rh->ip6r_len + 1) * 8;
1958 if (bufsize < (rthsize + CMSG_SPACE(0))) {
1959 origsegs = segments;
1960 size0 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 0);
1961 size1 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 1);
1962 segments -= (rthsize - (bufsize - CMSG_SPACE(0))) /
1963 (size1 - size0) + 1;
1964 warnx("segments truncated, showing only %d (total=%d)",
1965 segments, origsegs);
1968 for (i = 0; i < segments; i++) {
1969 in6 = inet6_rth_getaddr(extbuf, i);
1971 printf(" [%d]<NULL>\n", i);
1973 if (!inet_ntop(AF_INET6, in6, ntopbuf,
1975 strlcpy(ntopbuf, "?", sizeof(ntopbuf));
1976 printf(" [%d]%s\n", i, ntopbuf);
1985 pr_bitrange(u_int32_t v, int soff, int ii)
1992 /* shift till we have 0x01 */
1993 if ((v & 0x01) == 0) {
1995 printf("-%u", soff + off - 1);
2006 case 0x04: case 0x0c:
2017 /* we have 0x01 with us */
2018 for (i = 0; i < 32 - off; i++) {
2019 if ((v & (0x01 << i)) == 0)
2023 printf(" %u", soff + off);
2031 pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
2032 /* ni->qtype must be SUPTYPES */
2036 const u_char *cp, *end;
2039 u_int16_t words; /*32bit count*/
2042 #define MAXQTYPES (1 << 16)
2046 cp = (u_char *)(ni + 1);
2047 end = ((u_char *)ni) + nilen;
2051 printf("NodeInfo Supported Qtypes");
2052 if (options & F_VERBOSE) {
2053 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
2054 printf(", compressed bitmap");
2056 printf(", raw bitmap");
2060 clen = (size_t)(end - cp);
2061 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
2062 if (clen == 0 || clen > MAXQTYPES / 8 ||
2068 if (clen < sizeof(cbit) || clen % sizeof(v))
2070 memcpy(&cbit, cp, sizeof(cbit));
2071 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
2075 clen = ntohs(cbit.words) * sizeof(v);
2076 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
2081 for (off = 0; off < clen; off += sizeof(v)) {
2082 memcpy(&v, cp + off, sizeof(v));
2083 v = (u_int32_t)ntohl(v);
2084 b = pr_bitrange(v, (int)(cur + off * 8), b);
2086 /* flush the remaining bits */
2087 b = pr_bitrange(0, (int)(cur + off * 8), b);
2091 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
2092 cur += ntohs(cbit.skip) * 32;
2097 pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
2098 /* ni->qtype must be NODEADDR */
2100 u_char *cp = (u_char *)(ni + 1);
2101 char ntop_buf[INET6_ADDRSTRLEN];
2104 nilen -= sizeof(struct icmp6_nodeinfo);
2106 if (options & F_VERBOSE) {
2107 switch (ni->ni_code) {
2108 case ICMP6_NI_REFUSED:
2109 (void)printf("refused");
2111 case ICMP6_NI_UNKNOWN:
2112 (void)printf("unknown qtype");
2115 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
2116 (void)printf(" truncated");
2120 printf(" no address\n");
2123 * In icmp-name-lookups 05 and later, TTL of each returned address
2124 * is contained in the resposne. We try to detect the version
2125 * by the length of the data, but note that the detection algorithm
2126 * is incomplete. We assume the latest draft by default.
2128 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
2136 memcpy(&t, cp, sizeof(t));
2137 ttl = (u_int32_t)ntohl(t);
2138 cp += sizeof(u_int32_t);
2139 nilen -= sizeof(u_int32_t);
2142 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
2144 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2145 printf(" %s", ntop_buf);
2147 if (ttl == 0xffffffff) {
2149 * XXX: can this convention be applied to all
2150 * type of TTL (i.e. non-ND TTL)?
2152 printf("(TTL=infty)");
2155 printf("(TTL=%u)", ttl);
2159 nilen -= sizeof(struct in6_addr);
2160 cp += sizeof(struct in6_addr);
2165 get_hoplim(struct msghdr *mhdr)
2169 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2170 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2171 if (cm->cmsg_len == 0)
2174 if (cm->cmsg_level == IPPROTO_IPV6 &&
2175 cm->cmsg_type == IPV6_HOPLIMIT &&
2176 cm->cmsg_len == CMSG_LEN(sizeof(int))) {
2179 memcpy(&r, CMSG_DATA(cm), sizeof(r));
2187 static struct in6_pktinfo *
2188 get_rcvpktinfo(struct msghdr *mhdr)
2190 static struct in6_pktinfo pi;
2193 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2194 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2195 if (cm->cmsg_len == 0)
2198 if (cm->cmsg_level == IPPROTO_IPV6 &&
2199 cm->cmsg_type == IPV6_PKTINFO &&
2200 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) {
2201 memcpy(&pi, CMSG_DATA(cm), sizeof(pi));
2210 get_pathmtu(struct msghdr *mhdr)
2212 #ifdef IPV6_RECVPATHMTU
2214 struct ip6_mtuinfo mtuctl;
2216 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2217 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2218 if (cm->cmsg_len == 0)
2221 if (cm->cmsg_level == IPPROTO_IPV6 &&
2222 cm->cmsg_type == IPV6_PATHMTU &&
2223 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2224 memcpy(&mtuctl, CMSG_DATA(cm), sizeof(mtuctl));
2227 * If the notified destination is different from
2228 * the one we are pinging, just ignore the info.
2229 * We check the scope ID only when both notified value
2230 * and our own value have non-0 values, because we may
2231 * have used the default scope zone ID for sending,
2232 * in which case the scope ID value is 0.
2234 if (!IN6_ARE_ADDR_EQUAL(&mtuctl.ip6m_addr.sin6_addr,
2236 (mtuctl.ip6m_addr.sin6_scope_id &&
2237 dst.sin6_scope_id &&
2238 mtuctl.ip6m_addr.sin6_scope_id !=
2239 dst.sin6_scope_id)) {
2240 if ((options & F_VERBOSE) != 0) {
2241 printf("path MTU for %s is notified. "
2243 pr_addr((struct sockaddr *)&mtuctl.ip6m_addr,
2244 sizeof(mtuctl.ip6m_addr)));
2250 * Ignore an invalid MTU. XXX: can we just believe
2253 if (mtuctl.ip6m_mtu < IPV6_MMTU)
2256 /* notification for our destination. return the MTU. */
2257 return((int)mtuctl.ip6m_mtu);
2270 onint(int notused __unused)
2273 * When doing reverse DNS lookups, the seenint flag might not
2274 * be noticed for a while. Just exit if we get a second SIGINT.
2276 if ((options & F_HOSTNAME) && seenint != 0)
2277 _exit(nreceived ? 0 : 2);
2282 * Print out statistics.
2288 (void)printf("\n--- %s ping6 statistics ---\n", hostname);
2289 (void)printf("%ld packets transmitted, ", ntransmitted);
2290 (void)printf("%ld packets received, ", nreceived);
2292 (void)printf("+%ld duplicates, ", nrepeats);
2294 if (nreceived > ntransmitted)
2295 (void)printf("-- somebody's duplicating packets!");
2297 (void)printf("%.1f%% packet loss",
2298 ((((double)ntransmitted - nreceived) * 100.0) /
2302 printf(", %ld packets out of wait time", nrcvtimeout);
2303 (void)putchar('\n');
2304 if (nreceived && timing) {
2305 /* Only display average to microseconds */
2306 double num = nreceived + nrepeats;
2307 double avg = tsum / num;
2308 double dev = sqrt(tsumsq / num - avg * avg);
2310 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2311 tmin, avg, tmax, dev);
2312 (void)fflush(stdout);
2314 (void)fflush(stdout);
2318 static const char *niqcode[] = {
2320 "DNS label", /*or empty*/
2325 static const char *nircode[] = {
2326 "Success", "Refused", "Unknown",
2332 * Print a descriptive string about an ICMP header.
2335 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2337 char ntop_buf[INET6_ADDRSTRLEN];
2338 struct nd_redirect *red;
2339 struct icmp6_nodeinfo *ni;
2340 char dnsname[MAXDNAME + 1];
2344 switch (icp->icmp6_type) {
2345 case ICMP6_DST_UNREACH:
2346 switch (icp->icmp6_code) {
2347 case ICMP6_DST_UNREACH_NOROUTE:
2348 (void)printf("No Route to Destination\n");
2350 case ICMP6_DST_UNREACH_ADMIN:
2351 (void)printf("Destination Administratively "
2354 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2355 (void)printf("Destination Unreachable Beyond Scope\n");
2357 case ICMP6_DST_UNREACH_ADDR:
2358 (void)printf("Destination Host Unreachable\n");
2360 case ICMP6_DST_UNREACH_NOPORT:
2361 (void)printf("Destination Port Unreachable\n");
2364 (void)printf("Destination Unreachable, Bad Code: %d\n",
2368 /* Print returned IP header information */
2369 pr_retip((struct ip6_hdr *)(icp + 1), end);
2371 case ICMP6_PACKET_TOO_BIG:
2372 (void)printf("Packet too big mtu = %d\n",
2373 (int)ntohl(icp->icmp6_mtu));
2374 pr_retip((struct ip6_hdr *)(icp + 1), end);
2376 case ICMP6_TIME_EXCEEDED:
2377 switch (icp->icmp6_code) {
2378 case ICMP6_TIME_EXCEED_TRANSIT:
2379 (void)printf("Time to live exceeded\n");
2381 case ICMP6_TIME_EXCEED_REASSEMBLY:
2382 (void)printf("Frag reassembly time exceeded\n");
2385 (void)printf("Time exceeded, Bad Code: %d\n",
2389 pr_retip((struct ip6_hdr *)(icp + 1), end);
2391 case ICMP6_PARAM_PROB:
2392 (void)printf("Parameter problem: ");
2393 switch (icp->icmp6_code) {
2394 case ICMP6_PARAMPROB_HEADER:
2395 (void)printf("Erroneous Header ");
2397 case ICMP6_PARAMPROB_NEXTHEADER:
2398 (void)printf("Unknown Nextheader ");
2400 case ICMP6_PARAMPROB_OPTION:
2401 (void)printf("Unrecognized Option ");
2404 (void)printf("Bad code(%d) ", icp->icmp6_code);
2407 (void)printf("pointer = 0x%02x\n",
2408 (u_int32_t)ntohl(icp->icmp6_pptr));
2409 pr_retip((struct ip6_hdr *)(icp + 1), end);
2411 case ICMP6_ECHO_REQUEST:
2412 (void)printf("Echo Request");
2413 /* XXX ID + Seq + Data */
2415 case ICMP6_ECHO_REPLY:
2416 (void)printf("Echo Reply");
2417 /* XXX ID + Seq + Data */
2419 case ICMP6_MEMBERSHIP_QUERY:
2420 (void)printf("Listener Query");
2422 case ICMP6_MEMBERSHIP_REPORT:
2423 (void)printf("Listener Report");
2425 case ICMP6_MEMBERSHIP_REDUCTION:
2426 (void)printf("Listener Done");
2428 case ND_ROUTER_SOLICIT:
2429 (void)printf("Router Solicitation");
2431 case ND_ROUTER_ADVERT:
2432 (void)printf("Router Advertisement");
2434 case ND_NEIGHBOR_SOLICIT:
2435 (void)printf("Neighbor Solicitation");
2437 case ND_NEIGHBOR_ADVERT:
2438 (void)printf("Neighbor Advertisement");
2441 red = (struct nd_redirect *)icp;
2442 (void)printf("Redirect\n");
2443 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2445 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2446 (void)printf("Destination: %s", ntop_buf);
2447 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2449 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2450 (void)printf(" New Target: %s", ntop_buf);
2452 case ICMP6_NI_QUERY:
2453 (void)printf("Node Information Query");
2454 /* XXX ID + Seq + Data */
2455 ni = (struct icmp6_nodeinfo *)icp;
2456 l = end - (u_char *)(ni + 1);
2458 switch (ntohs(ni->ni_qtype)) {
2460 (void)printf("NOOP");
2462 case NI_QTYPE_SUPTYPES:
2463 (void)printf("Supported qtypes");
2466 (void)printf("DNS name");
2468 case NI_QTYPE_NODEADDR:
2469 (void)printf("nodeaddr");
2471 case NI_QTYPE_IPV4ADDR:
2472 (void)printf("IPv4 nodeaddr");
2475 (void)printf("unknown qtype");
2478 if (options & F_VERBOSE) {
2479 switch (ni->ni_code) {
2480 case ICMP6_NI_SUBJ_IPV6:
2481 if (l == sizeof(struct in6_addr) &&
2482 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2483 sizeof(ntop_buf)) != NULL) {
2484 (void)printf(", subject=%s(%s)",
2485 niqcode[ni->ni_code], ntop_buf);
2488 /* backward compat to -W */
2489 (void)printf(", oldfqdn");
2491 (void)printf(", invalid");
2495 case ICMP6_NI_SUBJ_FQDN:
2496 if (end == (u_char *)(ni + 1)) {
2497 (void)printf(", no subject");
2500 printf(", subject=%s", niqcode[ni->ni_code]);
2501 cp = (const u_char *)(ni + 1);
2502 cp = dnsdecode(cp, end, NULL, dnsname,
2505 printf("(%s)", dnsname);
2507 printf("(invalid)");
2509 case ICMP6_NI_SUBJ_IPV4:
2510 if (l == sizeof(struct in_addr) &&
2511 inet_ntop(AF_INET, ni + 1, ntop_buf,
2512 sizeof(ntop_buf)) != NULL) {
2513 (void)printf(", subject=%s(%s)",
2514 niqcode[ni->ni_code], ntop_buf);
2516 (void)printf(", invalid");
2519 (void)printf(", invalid");
2524 case ICMP6_NI_REPLY:
2525 (void)printf("Node Information Reply");
2526 /* XXX ID + Seq + Data */
2527 ni = (struct icmp6_nodeinfo *)icp;
2529 switch (ntohs(ni->ni_qtype)) {
2531 (void)printf("NOOP");
2533 case NI_QTYPE_SUPTYPES:
2534 (void)printf("Supported qtypes");
2537 (void)printf("DNS name");
2539 case NI_QTYPE_NODEADDR:
2540 (void)printf("nodeaddr");
2542 case NI_QTYPE_IPV4ADDR:
2543 (void)printf("IPv4 nodeaddr");
2546 (void)printf("unknown qtype");
2549 if (options & F_VERBOSE) {
2550 if (ni->ni_code > nitems(nircode))
2551 printf(", invalid");
2553 printf(", %s", nircode[ni->ni_code]);
2557 (void)printf("Bad ICMP type: %d", icp->icmp6_type);
2563 * Print an IP6 header.
2566 pr_iph(struct ip6_hdr *ip6)
2568 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2570 char ntop_buf[INET6_ADDRSTRLEN];
2572 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2573 tc = (tc >> 4) & 0x0f;
2574 tc |= (ip6->ip6_vfc << 4);
2576 printf("Vr TC Flow Plen Nxt Hlim\n");
2577 printf(" %1x %02x %05x %04x %02x %02x\n",
2578 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2579 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2580 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2581 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2582 printf("%s->", ntop_buf);
2583 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2584 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2585 printf("%s\n", ntop_buf);
2590 * Return an ascii host address as a dotted quad and optionally with
2594 pr_addr(struct sockaddr *addr, int addrlen)
2596 static char buf[NI_MAXHOST];
2599 if ((options & F_HOSTNAME) == 0)
2600 flag |= NI_NUMERICHOST;
2602 if (cap_getnameinfo(capdns, addr, addrlen, buf, sizeof(buf), NULL, 0,
2611 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2614 pr_retip(struct ip6_hdr *ip6, u_char *end)
2616 u_char *cp = (u_char *)ip6, nh;
2619 if ((size_t)(end - (u_char *)ip6) < sizeof(*ip6)) {
2624 hlen = sizeof(*ip6);
2628 while (end - cp >= 8) {
2632 case IPPROTO_HOPOPTS:
2634 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2635 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2637 case IPPROTO_DSTOPTS:
2639 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2640 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2642 case IPPROTO_FRAGMENT:
2644 hlen = sizeof(struct ip6_frag);
2645 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2647 case IPPROTO_ROUTING:
2649 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2650 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2655 memcpy(&ah, cp, sizeof(ah));
2656 hlen = (ah.ah_len+2) << 2;
2660 case IPPROTO_ICMPV6:
2661 printf("ICMP6: type = %d, code = %d\n",
2668 printf("TCP: from port %u, to port %u (decimal)\n",
2669 (*cp * 256 + *(cp + 1)),
2670 (*(cp + 2) * 256 + *(cp + 3)));
2673 printf("UDP: from port %u, to port %u (decimal)\n",
2674 (*cp * 256 + *(cp + 1)),
2675 (*(cp + 2) * 256 + *(cp + 3)));
2678 printf("Unknown Header(%d)\n", nh);
2682 if ((cp += hlen) >= end)
2697 fill(char *bp, char *patp)
2703 for (cp = patp; *cp; cp++)
2705 errx(1, "patterns must be specified as hex digits");
2707 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2708 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2709 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2710 &pat[13], &pat[14], &pat[15]);
2715 (size_t)kk <= MAXDATALEN - 8 + sizeof(struct tv32) + ii;
2717 for (jj = 0; jj < ii; ++jj)
2718 bp[jj + kk] = pat[jj];
2719 if (!(options & F_QUIET)) {
2720 (void)printf("PATTERN: 0x");
2721 for (jj = 0; jj < ii; ++jj)
2722 (void)printf("%02x", bp[jj] & 0xFF);
2728 #ifdef IPSEC_POLICY_IPSEC
2730 setpolicy(int so __unused, char *policy)
2735 return 0; /* ignore */
2737 buf = ipsec_set_policy(policy, strlen(policy));
2739 errx(1, "%s", ipsec_strerror());
2740 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2741 ipsec_get_policylen(buf)) < 0)
2742 warnx("Unable to set IPsec policy");
2751 nigroup(char *name, int nig_oldmcprefix)
2756 u_int8_t digest[16];
2759 char hbuf[NI_MAXHOST];
2760 struct in6_addr in6;
2763 p = strchr(name, '.');
2765 p = name + strlen(name);
2767 if (l > 63 || l > sizeof(hbuf) - 1)
2768 return NULL; /*label too long*/
2769 strncpy(hbuf, name, l);
2770 hbuf[(int)l] = '\0';
2772 for (q = name; *q; q++) {
2773 if (isupper(*(unsigned char *)q))
2774 *q = tolower(*(unsigned char *)q);
2777 /* generate 16 bytes of pseudo-random value. */
2778 memset(&ctxt, 0, sizeof(ctxt));
2781 MD5Update(&ctxt, &c, sizeof(c));
2782 MD5Update(&ctxt, (unsigned char *)name, l);
2783 MD5Final(digest, &ctxt);
2785 if (nig_oldmcprefix) {
2786 /* draft-ietf-ipngwg-icmp-name-lookup */
2787 valid = inet_pton(AF_INET6, "ff02::2:0000:0000", &in6);
2790 valid = inet_pton(AF_INET6, "ff02::2:ff00:0000", &in6);
2793 return NULL; /*XXX*/
2795 if (nig_oldmcprefix) {
2796 /* draft-ietf-ipngwg-icmp-name-lookup */
2797 bcopy(digest, &in6.s6_addr[12], 4);
2800 bcopy(digest, &in6.s6_addr[13], 3);
2803 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2806 return strdup(hbuf);
2812 (void)fprintf(stderr,
2813 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
2818 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
2822 #ifdef IPV6_USE_MIN_MTU
2826 "[-b bufsiz] [-c count] [-e gateway]\n"
2827 " [-I interface] [-i wait] [-k addrtype] [-l preload] "
2830 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
2833 " [-S sourceaddr] [-s packetsize]\n"
2834 " [-t timeout] [-W waittime] [hops ...] host\n");
2838 static cap_channel_t *
2841 cap_channel_t *capcas, *capdnsloc;
2843 const char *types[2];
2846 capcas = cap_init();
2848 err(1, "unable to create casper process");
2849 capdnsloc = cap_service_open(capcas, "system.dns");
2850 /* Casper capability no longer needed. */
2852 if (capdnsloc == NULL)
2853 err(1, "unable to open system.dns service");
2855 types[0] = "NAME2ADDR";
2856 types[1] = "ADDR2NAME";
2857 if (cap_dns_type_limit(capdnsloc, types, nitems(types)) < 0)
2858 err(1, "unable to limit access to system.dns service");
2859 families[0] = AF_INET6;
2860 if (cap_dns_family_limit(capdnsloc, families, nitems(families)) < 0)
2861 err(1, "unable to limit access to system.dns service");