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>
153 #define MAXPACKETLEN 131072
155 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
156 #define ICMP6ECHOTMLEN sizeof(struct tv32)
157 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
158 # define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */
159 /* FQDN case, 64 bits of nonce + 32 bits ttl */
160 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
161 #define EXTRA 256 /* for AH and various other headers. weird. */
162 #define DEFDATALEN ICMP6ECHOTMLEN
163 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
164 #define NROUTES 9 /* number of record route slots */
165 #define MAXWAIT 10000 /* max ms to wait for response */
166 #define MAXALARM (60 * 60) /* max seconds for alarm timeout */
168 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
169 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
170 #define SET(bit) (A(bit) |= B(bit))
171 #define CLR(bit) (A(bit) &= (~B(bit)))
172 #define TST(bit) (A(bit) & B(bit))
174 #define F_FLOOD 0x0001
175 #define F_INTERVAL 0x0002
176 #define F_PINGFILLED 0x0008
177 #define F_QUIET 0x0010
178 #define F_RROUTE 0x0020
179 #define F_SO_DEBUG 0x0040
180 #define F_VERBOSE 0x0100
182 #ifdef IPSEC_POLICY_IPSEC
183 #define F_POLICY 0x0400
185 #define F_AUTHHDR 0x0200
186 #define F_ENCRYPT 0x0400
187 #endif /*IPSEC_POLICY_IPSEC*/
189 #define F_NODEADDR 0x0800
190 #define F_FQDN 0x1000
191 #define F_INTERFACE 0x2000
192 #define F_SRCADDR 0x4000
193 #define F_HOSTNAME 0x10000
194 #define F_FQDNOLD 0x20000
195 #define F_NIGROUP 0x40000
196 #define F_SUPTYPES 0x80000
197 #define F_NOMINMTU 0x100000
198 #define F_ONCE 0x200000
199 #define F_AUDIBLE 0x400000
200 #define F_MISSED 0x800000
201 #define F_DONTFRAG 0x1000000
202 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
203 #define F_WAITTIME 0x2000000
204 static u_int options;
206 #define IN6LEN sizeof(struct in6_addr)
207 #define SA6LEN sizeof(struct sockaddr_in6)
208 #define DUMMY_PORT 10101
210 #define SIN6(s) ((struct sockaddr_in6 *)(s))
213 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
214 * number of received sequence numbers we can keep track of. Change 128
215 * to 8192 for complete accuracy...
217 #define MAX_DUP_CHK (8 * 8192)
218 static int mx_dup_ck = MAX_DUP_CHK;
219 static char rcvd_tbl[MAX_DUP_CHK / 8];
221 static struct sockaddr_in6 dst; /* who to ping6 */
222 static struct sockaddr_in6 src; /* src addr of this packet */
223 static socklen_t srclen;
224 static size_t datalen = DEFDATALEN;
225 static int ssend; /* send socket file descriptor */
226 static int srecv; /* receive socket file descriptor */
227 static u_char outpack[MAXPACKETLEN];
228 static char BSPACE = '\b'; /* characters written for flood */
229 static char BBELL = '\a'; /* characters written for AUDIBLE */
230 static char DOT = '.';
231 static char *hostname;
232 static int ident; /* process id to identify our packets */
233 static u_int8_t nonce[8]; /* nonce field for node information */
234 static int hoplimit = -1; /* hoplimit */
235 static int tclass = -1; /* traffic class */
236 static int pcp = -2; /* vlan priority code point */
237 static u_char *packet = NULL;
238 static cap_channel_t *capdns;
241 static long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
242 static long npackets; /* max packets to transmit */
243 static long nreceived; /* # of packets we got back */
244 static long nrepeats; /* number of duplicates */
245 static long ntransmitted; /* sequence # for outbound packets = #sent */
246 static long ntransmitfailures; /* number of transmit failures */
247 static int interval = 1000; /* interval between packets in ms */
248 static int waittime = MAXWAIT; /* timeout for each packet */
249 static long nrcvtimeout = 0; /* # of packets we got back after waittime */
252 static int timing; /* flag to do timing */
253 static double tmin = 999999999.0; /* minimum round trip time */
254 static double tmax = 0.0; /* maximum round trip time */
255 static double tsum = 0.0; /* sum of all times, for doing average */
256 static double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
258 /* for node addresses */
259 static u_short naflags;
261 /* for ancillary data(advanced API) */
262 static struct msghdr smsghdr;
263 static struct iovec smsgiov;
264 static char *scmsg = 0;
266 static volatile sig_atomic_t seenint;
268 static volatile sig_atomic_t seeninfo;
271 static cap_channel_t *capdns_setup(void);
272 static void fill(char *, char *);
273 static int get_hoplim(struct msghdr *);
274 static int get_pathmtu(struct msghdr *);
275 static struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
276 static void onsignal(int);
277 static void onint(int);
278 static size_t pingerlen(void);
279 static int pinger(void);
280 static const char *pr_addr(struct sockaddr *, int);
281 static void pr_icmph(struct icmp6_hdr *, u_char *);
282 static void pr_iph(struct ip6_hdr *);
283 static void pr_suptypes(struct icmp6_nodeinfo *, size_t);
284 static void pr_nodeaddr(struct icmp6_nodeinfo *, int);
285 static int myechoreply(const struct icmp6_hdr *);
286 static int mynireply(const struct icmp6_nodeinfo *);
287 static const char *dnsdecode(const u_char *, const u_char *, const u_char *,
289 static void pr_pack(u_char *, int, struct msghdr *);
290 static void pr_exthdrs(struct msghdr *);
291 static void pr_ip6opt(void *, size_t);
292 static void pr_rthdr(void *, size_t);
293 static int pr_bitrange(u_int32_t, int, int);
294 static void pr_retip(struct ip6_hdr *, u_char *);
295 static void summary(void);
297 #ifdef IPSEC_POLICY_IPSEC
298 static int setpolicy(int, char *);
301 static char *nigroup(char *, int);
304 ping6(int argc, char *argv[])
306 struct timespec last, intvl;
307 struct sockaddr_in6 from, *sin6;
308 struct addrinfo hints, *res;
309 struct sigaction si_sa;
311 int almost_done, ch, hold, packlen, preload, optval, error;
312 int nig_oldmcprefix = -1;
314 char *e, *target, *ifname = NULL, *gateway = NULL;
316 struct cmsghdr *scmsgp = NULL;
317 /* For control (ancillary) data received from recvmsg() */
318 u_char cm[CONTROLLEN];
319 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
324 struct in6_pktinfo pktinfo;
325 char *cmsg_pktinfo = NULL;
326 struct ip6_rthdr *rthdr = NULL;
327 #ifdef IPSEC_POLICY_IPSEC
328 char *policy_in = NULL;
329 char *policy_out = NULL;
334 #ifdef IPV6_USE_MIN_MTU
337 cap_rights_t rights_srecv;
338 cap_rights_t rights_ssend;
339 cap_rights_t rights_stdin;
341 /* just to be sure */
342 memset(&smsghdr, 0, sizeof(smsghdr));
343 memset(&smsgiov, 0, sizeof(smsgiov));
344 memset(&pktinfo, 0, sizeof(pktinfo));
346 intvl.tv_sec = interval / 1000;
347 intvl.tv_nsec = interval % 1000 * 1000000;
349 alarmtimeout = preload = 0;
350 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
351 capdns = capdns_setup();
353 while ((ch = getopt(argc, argv, PING6OPTS)) != -1) {
356 /* This option is processed in main(). */
362 options &= ~F_NOUSERDATA;
363 options |= F_NODEADDR;
364 for (cp = optarg; *cp != '\0'; cp++) {
367 naflags |= NI_NODEADDR_FLAG_ALL;
371 naflags |= NI_NODEADDR_FLAG_COMPAT;
375 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
379 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
383 naflags |= NI_NODEADDR_FLAG_GLOBAL;
385 case 'A': /* experimental. not in the spec */
386 #ifdef NI_NODEADDR_FLAG_ANYCAST
387 naflags |= NI_NODEADDR_FLAG_ANYCAST;
391 "-a A is not supported on the platform");
402 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
405 lsockbufsize = strtoul(optarg, &e, 10);
406 sockbufsize = (int)lsockbufsize;
407 if (errno || !*optarg || *e ||
408 lsockbufsize > INT_MAX)
409 errx(1, "invalid socket buffer size");
412 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
415 case 'C': /* vlan priority code point */
416 pcp = strtol(optarg, &e, 10);
417 if (*optarg == '\0' || *e != '\0')
418 errx(1, "illegal vlan pcp %s", optarg);
419 if (7 < pcp || pcp < -1)
420 errx(1, "illegal vlan pcp -- %s", optarg);
423 npackets = strtol(optarg, &e, 10);
424 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
426 "illegal number of packets -- %s", optarg);
429 options |= F_DONTFRAG;
432 options |= F_SO_DEBUG;
437 errx(1, "Must be superuser to flood ping");
440 setbuf(stdout, (char *)NULL);
446 options |= F_HOSTNAME;
448 case 'm': /* hoplimit */
449 hoplimit = strtol(optarg, &e, 10);
450 if (*optarg == '\0' || *e != '\0')
451 errx(1, "illegal hoplimit %s", optarg);
452 if (255 < hoplimit || hoplimit < -1)
454 "illegal hoplimit -- %s", optarg);
458 options |= F_INTERFACE;
459 #ifndef USE_SIN6_SCOPE_ID
463 case 'i': /* wait between sending packets */
464 t = strtod(optarg, &e);
465 if (*optarg == '\0' || *e != '\0')
466 errx(1, "illegal timing interval %s", optarg);
467 if (t < 1 && getuid()) {
468 errx(1, "%s: only root may use interval < 1s",
471 intvl.tv_sec = (time_t)t;
473 (long)((t - intvl.tv_sec) * 1000000000);
474 if (intvl.tv_sec < 0)
475 errx(1, "illegal timing interval %s", optarg);
476 /* less than 1/hz does not make sense */
477 if (intvl.tv_sec == 0 && intvl.tv_nsec < 1000) {
478 warnx("too small interval, raised to .000001");
479 intvl.tv_nsec = 1000;
481 options |= F_INTERVAL;
486 errx(1, "Must be superuser to preload");
488 preload = strtol(optarg, &e, 10);
489 if (preload < 0 || *optarg == '\0' || *e != '\0')
490 errx(1, "illegal preload value -- %s", optarg);
493 #ifdef IPV6_USE_MIN_MTU
497 errx(1, "-%c is not supported on this platform", ch);
501 options &= ~F_HOSTNAME;
504 options |= F_NIGROUP;
510 case 'p': /* fill buffer with user pattern */
511 options |= F_PINGFILLED;
512 fill((char *)datap, optarg);
518 options |= F_AUDIBLE;
524 memset(&hints, 0, sizeof(struct addrinfo));
525 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
526 hints.ai_family = AF_INET6;
527 hints.ai_socktype = SOCK_RAW;
528 hints.ai_protocol = IPPROTO_ICMPV6;
530 error = cap_getaddrinfo(capdns, optarg, NULL, &hints, &res);
532 errx(1, "invalid source address: %s",
533 gai_strerror(error));
536 * res->ai_family must be AF_INET6 and res->ai_addrlen
537 * must be sizeof(src).
539 memcpy(&src, res->ai_addr, res->ai_addrlen);
540 srclen = res->ai_addrlen;
542 options |= F_SRCADDR;
544 case 's': /* size of packet to send */
545 datalen = strtol(optarg, &e, 10);
546 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
547 errx(1, "illegal datalen value -- %s", optarg);
548 if (datalen > MAXDATALEN) {
550 "datalen value too large, maximum is %d",
555 options &= ~F_NOUSERDATA;
556 options |= F_SUPTYPES;
559 options |= F_VERBOSE;
562 options &= ~F_NOUSERDATA;
566 options &= ~F_NOUSERDATA;
567 options |= F_FQDNOLD;
570 t = strtod(optarg, &e);
571 if (*e || e == optarg || t > (double)INT_MAX)
572 err(EX_USAGE, "invalid timing interval: `%s'",
574 options |= F_WAITTIME;
578 alarmtimeout = strtoul(optarg, &e, 0);
579 if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX))
580 errx(EX_USAGE, "invalid timeout: `%s'",
582 if (alarmtimeout > MAXALARM)
583 errx(EX_USAGE, "invalid timeout: `%s' > %d",
586 struct itimerval itv;
588 timerclear(&itv.it_interval);
589 timerclear(&itv.it_value);
590 itv.it_value.tv_sec = (time_t)alarmtimeout;
591 if (setitimer(ITIMER_REAL, &itv, NULL) != 0)
595 case 'z': /* traffic class */
596 tclass = strtol(optarg, &e, 10);
597 if (*optarg == '\0' || *e != '\0')
598 errx(1, "illegal traffic class %s", optarg);
599 if (255 < tclass || tclass < -1)
601 "illegal traffic class -- %s", optarg);
604 #ifdef IPSEC_POLICY_IPSEC
607 if (!strncmp("in", optarg, 2)) {
608 if ((policy_in = strdup(optarg)) == NULL)
610 } else if (!strncmp("out", optarg, 3)) {
611 if ((policy_out = strdup(optarg)) == NULL)
614 errx(1, "invalid security policy");
618 options |= F_AUTHHDR;
621 options |= F_ENCRYPT;
623 #endif /*IPSEC_POLICY_IPSEC*/
640 #ifdef IPV6_RECVRTHDR /* 2292bis */
641 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
644 rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1);
647 errx(1, "too many intermediate hops");
653 if (options & F_NIGROUP) {
654 target = nigroup(argv[argc - 1], nig_oldmcprefix);
655 if (target == NULL) {
660 target = argv[argc - 1];
662 /* cap_getaddrinfo */
663 memset(&hints, 0, sizeof(struct addrinfo));
664 hints.ai_flags = AI_CANONNAME;
665 hints.ai_family = AF_INET6;
666 hints.ai_socktype = SOCK_RAW;
667 hints.ai_protocol = IPPROTO_ICMPV6;
669 error = cap_getaddrinfo(capdns, target, NULL, &hints, &res);
671 errx(1, "%s", gai_strerror(error));
672 if (res->ai_canonname)
673 hostname = strdup(res->ai_canonname);
678 errx(1, "cap_getaddrinfo failed");
680 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
682 if ((ssend = socket(res->ai_family, res->ai_socktype,
683 res->ai_protocol)) < 0)
684 err(1, "socket ssend");
685 if ((srecv = socket(res->ai_family, res->ai_socktype,
686 res->ai_protocol)) < 0)
687 err(1, "socket srecv");
690 /* set the source address if specified. */
691 if ((options & F_SRCADDR) != 0) {
692 /* properly fill sin6_scope_id */
693 if (IN6_IS_ADDR_LINKLOCAL(&src.sin6_addr) && (
694 IN6_IS_ADDR_LINKLOCAL(&dst.sin6_addr) ||
695 IN6_IS_ADDR_MC_LINKLOCAL(&dst.sin6_addr) ||
696 IN6_IS_ADDR_MC_NODELOCAL(&dst.sin6_addr))) {
697 if (src.sin6_scope_id == 0)
698 src.sin6_scope_id = dst.sin6_scope_id;
699 if (dst.sin6_scope_id == 0)
700 dst.sin6_scope_id = src.sin6_scope_id;
702 if (bind(ssend, (struct sockaddr *)&src, srclen) != 0)
705 /* set the gateway (next hop) if specified */
707 memset(&hints, 0, sizeof(hints));
708 hints.ai_family = AF_INET6;
709 hints.ai_socktype = SOCK_RAW;
710 hints.ai_protocol = IPPROTO_ICMPV6;
712 error = cap_getaddrinfo(capdns, gateway, NULL, &hints, &res);
714 errx(1, "cap_getaddrinfo for the gateway %s: %s",
715 gateway, gai_strerror(error));
717 if (res->ai_next && (options & F_VERBOSE))
718 warnx("gateway resolves to multiple addresses");
720 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_NEXTHOP,
721 res->ai_addr, res->ai_addrlen)) {
722 err(1, "setsockopt(IPV6_NEXTHOP)");
729 * let the kerel pass extension headers of incoming packets,
730 * for privileged socket options
732 if ((options & F_VERBOSE) != 0) {
735 #ifdef IPV6_RECVHOPOPTS
736 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
738 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
739 #else /* old adv. API */
740 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
742 err(1, "setsockopt(IPV6_HOPOPTS)");
744 #ifdef IPV6_RECVDSTOPTS
745 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
747 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
748 #else /* old adv. API */
749 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
751 err(1, "setsockopt(IPV6_DSTOPTS)");
753 #ifdef IPV6_RECVRTHDRDSTOPTS
754 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
756 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
760 /* revoke root privilege */
761 if (seteuid(getuid()) != 0)
762 err(1, "seteuid() failed");
763 if (setuid(getuid()) != 0)
764 err(1, "setuid() failed");
766 if ((options & F_FLOOD) && (options & F_INTERVAL))
767 errx(1, "-f and -i incompatible options");
769 if ((options & F_NOUSERDATA) == 0) {
770 if (datalen >= sizeof(struct tv32)) {
771 /* we can time transfer */
775 /* in F_VERBOSE case, we may get non-echoreply packets*/
776 if (options & F_VERBOSE)
777 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
779 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
781 /* suppress timing for node information query */
784 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
787 if (!(packet = (u_char *)malloc((u_int)packlen)))
788 err(1, "Unable to allocate packet");
789 if (!(options & F_PINGFILLED))
790 for (i = ICMP6ECHOLEN; i < packlen; ++i)
793 ident = getpid() & 0xFFFF;
794 arc4random_buf(nonce, sizeof(nonce));
796 if (options & F_DONTFRAG)
797 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_DONTFRAG,
798 &optval, sizeof(optval)) == -1)
799 err(1, "IPV6_DONTFRAG");
802 if (options & F_SO_DEBUG) {
803 (void)setsockopt(ssend, SOL_SOCKET, SO_DEBUG, (char *)&hold,
805 (void)setsockopt(srecv, SOL_SOCKET, SO_DEBUG, (char *)&hold,
808 optval = IPV6_DEFHLIM;
809 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
810 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
811 &optval, sizeof(optval)) == -1)
812 err(1, "IPV6_MULTICAST_HOPS");
813 #ifdef IPV6_USE_MIN_MTU
815 optval = mflag > 1 ? 0 : 1;
817 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
818 &optval, sizeof(optval)) == -1)
819 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
821 #ifdef IPV6_RECVPATHMTU
824 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVPATHMTU,
825 &optval, sizeof(optval)) == -1)
826 err(1, "setsockopt(IPV6_RECVPATHMTU)");
828 #endif /* IPV6_RECVPATHMTU */
829 #endif /* IPV6_USE_MIN_MTU */
832 #ifdef IPSEC_POLICY_IPSEC
833 if (options & F_POLICY) {
834 if (setpolicy(srecv, policy_in) < 0)
835 errx(1, "%s", ipsec_strerror());
836 if (setpolicy(ssend, policy_out) < 0)
837 errx(1, "%s", ipsec_strerror());
840 if (options & F_AUTHHDR) {
841 optval = IPSEC_LEVEL_REQUIRE;
842 #ifdef IPV6_AUTH_TRANS_LEVEL
843 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
844 &optval, sizeof(optval)) == -1)
845 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
846 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
847 &optval, sizeof(optval)) == -1)
848 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
850 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
851 &optval, sizeof(optval)) == -1)
852 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
853 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
854 &optval, sizeof(optval)) == -1)
855 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
858 if (options & F_ENCRYPT) {
859 optval = IPSEC_LEVEL_REQUIRE;
860 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
861 &optval, sizeof(optval)) == -1)
862 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
863 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
864 &optval, sizeof(optval)) == -1)
865 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
867 #endif /*IPSEC_POLICY_IPSEC*/
872 struct icmp6_filter filt;
873 if (!(options & F_VERBOSE)) {
874 ICMP6_FILTER_SETBLOCKALL(&filt);
875 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
876 (options & F_NODEADDR) || (options & F_SUPTYPES))
877 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
879 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
881 ICMP6_FILTER_SETPASSALL(&filt);
883 if (setsockopt(srecv, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
885 err(1, "setsockopt(ICMP6_FILTER)");
887 #endif /*ICMP6_FILTER*/
889 /* let the kerel pass extension headers of incoming packets */
890 if ((options & F_VERBOSE) != 0) {
893 #ifdef IPV6_RECVRTHDR
894 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
896 err(1, "setsockopt(IPV6_RECVRTHDR)");
897 #else /* old adv. API */
898 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RTHDR, &opton,
900 err(1, "setsockopt(IPV6_RTHDR)");
906 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
907 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
908 &optval, sizeof(optval)) == -1)
909 err(1, "IPV6_MULTICAST_LOOP");
912 /* Specify the outgoing interface and/or the source address */
914 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
917 ip6optlen += CMSG_SPACE(sizeof(int));
919 /* set IP6 packet options */
921 if ((scmsg = (char *)malloc(ip6optlen)) == NULL)
922 errx(1, "can't allocate enough memory");
923 smsghdr.msg_control = (caddr_t)scmsg;
924 smsghdr.msg_controllen = ip6optlen;
925 scmsgp = CMSG_FIRSTHDR(&smsghdr);
928 cmsg_pktinfo = CMSG_DATA(scmsgp);
929 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
930 scmsgp->cmsg_level = IPPROTO_IPV6;
931 scmsgp->cmsg_type = IPV6_PKTINFO;
932 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
935 /* set the outgoing interface */
937 #ifndef USE_SIN6_SCOPE_ID
938 /* pktinfo must have already been allocated */
939 if ((pktinfo.ipi6_ifindex = if_nametoindex(ifname)) == 0)
940 errx(1, "%s: invalid interface name", ifname);
942 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
943 errx(1, "%s: invalid interface name", ifname);
946 if (hoplimit != -1) {
947 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
948 scmsgp->cmsg_level = IPPROTO_IPV6;
949 scmsgp->cmsg_type = IPV6_HOPLIMIT;
950 memcpy(CMSG_DATA(scmsgp), &hoplimit, sizeof(hoplimit));
952 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
956 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_TCLASS,
957 &tclass, sizeof(tclass)) == -1)
958 err(1, "setsockopt(IPV6_TCLASS)");
962 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_VLAN_PCP,
963 &pcp, sizeof(pcp)) == -1)
964 err(1, "setsockopt(IPV6_VLAN_PCP)");
967 if (argc > 1) { /* some intermediate addrs are specified */
971 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
972 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
973 scmsgp->cmsg_level = IPPROTO_IPV6;
974 scmsgp->cmsg_type = IPV6_RTHDR;
975 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
976 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
977 IPV6_RTHDR_TYPE_0, argc - 1);
979 errx(1, "can't initialize rthdr");
981 for (hops = 0; hops < argc - 1; hops++) {
982 memset(&hints, 0, sizeof(hints));
983 hints.ai_family = AF_INET6;
985 if ((error = cap_getaddrinfo(capdns, argv[hops], NULL, &hints,
987 errx(1, "%s", gai_strerror(error));
988 if (res->ai_addr->sa_family != AF_INET6)
990 "bad addr family of an intermediate addr");
991 sin6 = (struct sockaddr_in6 *)(void *)res->ai_addr;
992 if (inet6_rth_add(rthdr, &sin6->sin6_addr))
993 errx(1, "can't add an intermediate node");
997 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1000 /* From now on we will use only reverse DNS lookups. */
1002 if (capdns != NULL) {
1003 const char *types[1];
1005 types[0] = "ADDR2NAME";
1006 if (cap_dns_type_limit(capdns, types, nitems(types)) < 0)
1007 err(1, "unable to limit access to system.dns service");
1010 if (!(options & F_SRCADDR)) {
1012 * get the source address. XXX since we revoked the root
1013 * privilege, we cannot use a raw socket for this.
1016 socklen_t len = sizeof(src);
1018 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1019 err(1, "UDP socket");
1021 src.sin6_family = AF_INET6;
1022 src.sin6_addr = dst.sin6_addr;
1023 src.sin6_port = ntohs(DUMMY_PORT);
1024 src.sin6_scope_id = dst.sin6_scope_id;
1027 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
1028 (void *)&pktinfo, sizeof(pktinfo)))
1029 err(1, "UDP setsockopt(IPV6_PKTINFO)");
1031 if (hoplimit != -1 &&
1032 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
1033 (void *)&hoplimit, sizeof(hoplimit)))
1034 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
1036 if (hoplimit != -1 &&
1037 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
1038 (void *)&hoplimit, sizeof(hoplimit)))
1039 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
1042 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
1043 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
1044 err(1, "UDP setsockopt(IPV6_RTHDR)");
1046 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
1047 err(1, "UDP connect");
1049 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
1050 err(1, "getsockname");
1055 /* Save pktinfo in the ancillary data. */
1057 memcpy(cmsg_pktinfo, &pktinfo, sizeof(pktinfo));
1059 if (connect(ssend, (struct sockaddr *)&dst, sizeof(dst)) != 0)
1060 err(1, "connect() ssend");
1062 caph_cache_catpages();
1063 if (caph_enter_casper() < 0)
1064 err(1, "caph_enter_casper");
1066 cap_rights_init(&rights_stdin);
1067 if (caph_rights_limit(STDIN_FILENO, &rights_stdin) < 0)
1068 err(1, "caph_rights_limit stdin");
1069 if (caph_limit_stdout() < 0)
1070 err(1, "caph_limit_stdout");
1071 if (caph_limit_stderr() < 0)
1072 err(1, "caph_limit_stderr");
1074 cap_rights_init(&rights_srecv, CAP_RECV, CAP_EVENT, CAP_SETSOCKOPT);
1075 if (caph_rights_limit(srecv, &rights_srecv) < 0)
1076 err(1, "caph_rights_limit srecv");
1077 cap_rights_init(&rights_ssend, CAP_SEND, CAP_SETSOCKOPT);
1078 if (caph_rights_limit(ssend, &rights_ssend) < 0)
1079 err(1, "caph_rights_limit ssend");
1081 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
1083 if (datalen > (size_t)sockbufsize)
1084 warnx("you need -b to increase socket buffer size");
1085 if (setsockopt(ssend, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
1086 sizeof(sockbufsize)) < 0)
1087 err(1, "setsockopt(SO_SNDBUF)");
1088 if (setsockopt(srecv, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
1089 sizeof(sockbufsize)) < 0)
1090 err(1, "setsockopt(SO_RCVBUF)");
1093 if (datalen > 8 * 1024) /*XXX*/
1094 warnx("you need -b to increase socket buffer size");
1096 * When pinging the broadcast address, you can get a lot of
1097 * answers. Doing something so evil is useful if you are trying
1098 * to stress the ethernet, or just want to fill the arp cache
1099 * to get some stuff for /etc/ethers.
1102 setsockopt(srecv, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
1108 #ifndef USE_SIN6_SCOPE_ID
1109 #ifdef IPV6_RECVPKTINFO
1110 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
1111 sizeof(optval)) < 0)
1112 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
1113 #else /* old adv. API */
1114 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
1115 sizeof(optval)) < 0)
1116 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
1118 #endif /* USE_SIN6_SCOPE_ID */
1119 #ifdef IPV6_RECVHOPLIMIT
1120 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
1121 sizeof(optval)) < 0)
1122 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
1123 #else /* old adv. API */
1124 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
1125 sizeof(optval)) < 0)
1126 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
1129 cap_rights_clear(&rights_srecv, CAP_SETSOCKOPT);
1130 if (caph_rights_limit(srecv, &rights_srecv) < 0)
1131 err(1, "caph_rights_limit srecv setsockopt");
1132 cap_rights_clear(&rights_ssend, CAP_SETSOCKOPT);
1133 if (caph_rights_limit(ssend, &rights_ssend) < 0)
1134 err(1, "caph_rights_limit ssend setsockopt");
1136 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
1137 (unsigned long)(pingerlen() - 8));
1138 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
1139 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
1144 if (npackets != 0 && preload > npackets)
1149 clock_gettime(CLOCK_MONOTONIC, &last);
1151 sigemptyset(&si_sa.sa_mask);
1153 si_sa.sa_handler = onsignal;
1154 if (sigaction(SIGINT, &si_sa, 0) == -1)
1155 err(EX_OSERR, "sigaction SIGINT");
1158 if (sigaction(SIGINFO, &si_sa, 0) == -1)
1159 err(EX_OSERR, "sigaction SIGINFO");
1162 if (alarmtimeout > 0) {
1163 if (sigaction(SIGALRM, &si_sa, 0) == -1)
1164 err(EX_OSERR, "sigaction SIGALRM");
1166 if (options & F_FLOOD) {
1168 intvl.tv_nsec = 10000000;
1172 while (seenint == 0) {
1173 struct timespec now, timeout;
1175 struct iovec iov[2];
1179 /* signal handling */
1190 FD_SET(srecv, &rfds);
1191 clock_gettime(CLOCK_MONOTONIC, &now);
1192 timespecadd(&last, &intvl, &timeout);
1193 timespecsub(&timeout, &now, &timeout);
1194 if (timeout.tv_sec < 0)
1195 timespecclear(&timeout);
1197 n = pselect(srecv + 1, &rfds, NULL, NULL, &timeout, NULL);
1199 continue; /* EINTR */
1201 m.msg_name = (caddr_t)&from;
1202 m.msg_namelen = sizeof(from);
1203 memset(&iov, 0, sizeof(iov));
1204 iov[0].iov_base = (caddr_t)packet;
1205 iov[0].iov_len = packlen;
1208 memset(cm, 0, CONTROLLEN);
1209 m.msg_control = (void *)cm;
1210 m.msg_controllen = CONTROLLEN;
1212 cc = recvmsg(srecv, &m, 0);
1214 if (errno != EINTR) {
1219 } else if (cc == 0) {
1223 * receive control messages only. Process the
1224 * exceptions (currently the only possibility is
1225 * a path MTU notification.)
1227 if ((mtu = get_pathmtu(&m)) > 0) {
1228 if ((options & F_VERBOSE) != 0) {
1229 printf("new path MTU (%d) is "
1236 * an ICMPv6 message (probably an echoreply)
1239 pr_pack(packet, cc, &m);
1241 if (((options & F_ONCE) != 0 && nreceived > 0) ||
1242 (npackets > 0 && nreceived >= npackets))
1245 if (n == 0 || (options & F_FLOOD)) {
1246 if (npackets == 0 || ntransmitted < npackets)
1253 * If we're not transmitting any more packets,
1254 * change the timer to wait two round-trip times
1255 * if we've received any packets or (waittime)
1256 * milliseconds if we haven't.
1260 intvl.tv_sec = 2 * tmax / 1000;
1261 if (intvl.tv_sec == 0)
1264 intvl.tv_sec = waittime / 1000;
1266 waittime % 1000 * 1000000;
1269 clock_gettime(CLOCK_MONOTONIC, &last);
1270 if (ntransmitted - nreceived - 1 > nmissedmax) {
1271 nmissedmax = ntransmitted - nreceived - 1;
1272 if (options & F_MISSED)
1273 (void)write(STDOUT_FILENO, &BBELL, 1);
1277 sigemptyset(&si_sa.sa_mask);
1279 si_sa.sa_handler = SIG_IGN;
1280 sigaction(SIGINT, &si_sa, 0);
1281 sigaction(SIGALRM, &si_sa, 0);
1289 else if (ntransmitted > ntransmitfailures)
1314 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1315 * will be added on by the kernel. The ID field is our UNIX process ID,
1316 * and the sequence number is an ascending integer. The first 8 bytes
1317 * of the data portion are used to hold a UNIX "timespec" struct in VAX
1318 * byte-order, to compute the round-trip time.
1325 if (options & F_FQDN)
1326 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1327 else if (options & F_FQDNOLD)
1329 else if (options & F_NODEADDR)
1330 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1331 else if (options & F_SUPTYPES)
1334 l = ICMP6ECHOLEN + datalen;
1342 struct icmp6_hdr *icp;
1343 struct iovec iov[2];
1345 struct icmp6_nodeinfo *nip;
1348 if (npackets && ntransmitted >= npackets)
1349 return(-1); /* no more transmission */
1351 icp = (struct icmp6_hdr *)outpack;
1352 nip = (struct icmp6_nodeinfo *)outpack;
1353 memset(icp, 0, sizeof(*icp));
1354 icp->icmp6_cksum = 0;
1355 seq = ntransmitted++;
1356 CLR(seq % mx_dup_ck);
1358 if (options & F_FQDN) {
1361 icp->icmp6_type = ICMP6_NI_QUERY;
1362 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1363 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1364 nip->ni_flags = htons(0);
1366 memcpy(nip->icmp6_ni_nonce, nonce,
1367 sizeof(nip->icmp6_ni_nonce));
1369 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1371 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1372 sizeof(dst.sin6_addr));
1373 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1375 } else if (options & F_FQDNOLD) {
1377 /* packet format in 03 draft - no Subject data on queries */
1378 icp->icmp6_type = ICMP6_NI_QUERY;
1379 icp->icmp6_code = 0; /* code field is always 0 */
1380 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1381 nip->ni_flags = htons(0);
1383 memcpy(nip->icmp6_ni_nonce, nonce,
1384 sizeof(nip->icmp6_ni_nonce));
1386 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1390 } else if (options & F_NODEADDR) {
1393 icp->icmp6_type = ICMP6_NI_QUERY;
1394 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1395 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1396 nip->ni_flags = naflags;
1398 memcpy(nip->icmp6_ni_nonce, nonce,
1399 sizeof(nip->icmp6_ni_nonce));
1401 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1403 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1404 sizeof(dst.sin6_addr));
1405 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1407 } else if (options & F_SUPTYPES) {
1410 icp->icmp6_type = ICMP6_NI_QUERY;
1411 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1412 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1413 /* we support compressed bitmap */
1414 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1416 memcpy(nip->icmp6_ni_nonce, nonce,
1417 sizeof(nip->icmp6_ni_nonce));
1419 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1424 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1425 icp->icmp6_code = 0;
1426 icp->icmp6_id = htons(ident);
1427 icp->icmp6_seq = htons(seq);
1431 (void)clock_gettime(CLOCK_MONOTONIC, &tv);
1433 * Truncate seconds down to 32 bits in order
1434 * to fit the timestamp within 8 bytes of the
1435 * packet. We're only concerned with
1436 * durations, not absolute times.
1438 tv32.tv32_sec = (uint32_t)htonl(tv.tv_sec);
1439 tv32.tv32_nsec = (uint32_t)htonl(tv.tv_nsec);
1440 memcpy(&outpack[ICMP6ECHOLEN], &tv32, sizeof(tv32));
1442 cc = ICMP6ECHOLEN + datalen;
1446 if (pingerlen() != cc)
1447 errx(1, "internal error; length mismatch");
1450 memset(&iov, 0, sizeof(iov));
1451 iov[0].iov_base = (caddr_t)outpack;
1452 iov[0].iov_len = cc;
1453 smsghdr.msg_iov = iov;
1454 smsghdr.msg_iovlen = 1;
1456 i = sendmsg(ssend, &smsghdr, 0);
1458 if (i < 0 || i != cc) {
1460 ntransmitfailures++;
1463 (void)printf("ping6: wrote %s %d chars, ret=%d\n",
1466 if (!(options & F_QUIET) && options & F_FLOOD)
1467 (void)write(STDOUT_FILENO, &DOT, 1);
1473 myechoreply(const struct icmp6_hdr *icp)
1475 if (ntohs(icp->icmp6_id) == ident)
1482 mynireply(const struct icmp6_nodeinfo *nip)
1484 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1485 nonce + sizeof(u_int16_t),
1486 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1493 * Decode a name from a DNS message.
1495 * Format of the message is described in RFC 1035 subsection 4.1.4.
1498 * sp - Pointer to a DNS pointer octet or to the first octet of a label
1500 * ep - Pointer to the end of the message (one step past the last octet).
1501 * base - Pointer to the beginning of the message.
1502 * buf - Buffer into which the decoded name will be saved.
1503 * bufsiz - Size of the buffer 'buf'.
1506 * Pointer to an octet immediately following the ending zero octet
1507 * of the decoded label, or NULL if an error occured.
1510 dnsdecode(const u_char *sp, const u_char *ep, const u_char *base, char *buf,
1515 char cresult[MAXDNAME + 1];
1526 if (i == 0 || cp != sp) {
1527 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1528 return NULL; /*result overrun*/
1534 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1535 /* DNS compression */
1539 comp = base + (i & 0x3f);
1540 if (dnsdecode(comp, cp, base, cresult,
1541 sizeof(cresult)) == NULL)
1543 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1544 return NULL; /*result overrun*/
1546 } else if ((i & 0x3f) == i) {
1548 return NULL; /*source overrun*/
1549 while (i-- > 0 && cp < ep) {
1550 l = snprintf(cresult, sizeof(cresult),
1551 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1552 if ((size_t)l >= sizeof(cresult) || l < 0)
1554 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1555 return NULL; /*result overrun*/
1559 return NULL; /*invalid label*/
1562 return NULL; /*not terminated*/
1569 * Print out the packet, if it came from us. This logic is necessary
1570 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1571 * which arrive ('tis only fair). This permits multiple copies of this
1572 * program to be run without having intermingled output (or statistics!).
1575 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1577 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1578 struct icmp6_hdr *icp;
1579 struct icmp6_nodeinfo *ni;
1582 struct sockaddr *from;
1584 const u_char *cp = NULL;
1585 u_char *dp, *end = buf + cc;
1586 struct in6_pktinfo *pktinfo = NULL;
1587 struct timespec tv, tp;
1589 double triptime = 0;
1594 char dnsname[MAXDNAME + 1];
1596 (void)clock_gettime(CLOCK_MONOTONIC, &tv);
1598 if (!mhdr || !mhdr->msg_name ||
1599 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1600 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1601 if (options & F_VERBOSE)
1602 warnx("invalid peername");
1605 from = (struct sockaddr *)mhdr->msg_name;
1606 fromlen = mhdr->msg_namelen;
1607 if (cc < (int)sizeof(struct icmp6_hdr)) {
1608 if (options & F_VERBOSE)
1609 warnx("packet too short (%d bytes) from %s", cc,
1610 pr_addr(from, fromlen));
1613 if (((mhdr->msg_flags & MSG_CTRUNC) != 0) &&
1614 (options & F_VERBOSE) != 0)
1615 warnx("some control data discarded, insufficient buffer size");
1616 icp = (struct icmp6_hdr *)buf;
1617 ni = (struct icmp6_nodeinfo *)buf;
1620 if ((hoplim = get_hoplim(mhdr)) == -1) {
1621 warnx("failed to get receiving hop limit");
1624 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1625 warnx("failed to get receiving packet information");
1629 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1630 seq = ntohs(icp->icmp6_seq);
1633 memcpy(&tpp, icp + 1, sizeof(tpp));
1634 tp.tv_sec = ntohl(tpp.tv32_sec);
1635 tp.tv_nsec = ntohl(tpp.tv32_nsec);
1636 timespecsub(&tv, &tp, &tv);
1637 triptime = ((double)tv.tv_sec) * 1000.0 +
1638 ((double)tv.tv_nsec) / 1000000.0;
1640 tsumsq += triptime * triptime;
1641 if (triptime < tmin)
1643 if (triptime > tmax)
1647 if (TST(seq % mx_dup_ck)) {
1652 SET(seq % mx_dup_ck);
1656 if (options & F_QUIET)
1659 if (options & F_WAITTIME && triptime > waittime) {
1664 if (options & F_FLOOD)
1665 (void)write(STDOUT_FILENO, &BSPACE, 1);
1667 if (options & F_AUDIBLE)
1668 (void)write(STDOUT_FILENO, &BBELL, 1);
1669 (void)printf("%d bytes from %s, icmp_seq=%u", cc,
1670 pr_addr(from, fromlen), seq);
1671 (void)printf(" hlim=%d", hoplim);
1672 if ((options & F_VERBOSE) != 0) {
1673 struct sockaddr_in6 dstsa;
1675 memset(&dstsa, 0, sizeof(dstsa));
1676 dstsa.sin6_family = AF_INET6;
1677 dstsa.sin6_len = sizeof(dstsa);
1678 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1679 dstsa.sin6_addr = pktinfo->ipi6_addr;
1680 (void)printf(" dst=%s",
1681 pr_addr((struct sockaddr *)&dstsa,
1685 (void)printf(" time=%.3f ms", triptime);
1687 (void)printf("(DUP!)");
1688 /* check the data */
1689 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1690 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1691 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1693 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
1698 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1699 memcpy(&seq, ni->icmp6_ni_nonce, sizeof(seq));
1702 if (TST(seq % mx_dup_ck)) {
1707 SET(seq % mx_dup_ck);
1711 if (options & F_QUIET)
1714 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1716 switch (ntohs(ni->ni_code)) {
1717 case ICMP6_NI_SUCCESS:
1719 case ICMP6_NI_REFUSED:
1720 printf("refused, type 0x%x", ntohs(ni->ni_type));
1722 case ICMP6_NI_UNKNOWN:
1723 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1726 printf("unknown code 0x%x, type 0x%x",
1727 ntohs(ni->ni_code), ntohs(ni->ni_type));
1731 switch (ntohs(ni->ni_qtype)) {
1733 printf("NodeInfo NOOP");
1735 case NI_QTYPE_SUPTYPES:
1736 pr_suptypes(ni, end - (u_char *)ni);
1738 case NI_QTYPE_NODEADDR:
1739 pr_nodeaddr(ni, end - (u_char *)ni);
1742 default: /* XXX: for backward compatibility */
1743 cp = (u_char *)ni + ICMP6_NIRLEN;
1744 if (buf[off + ICMP6_NIRLEN] ==
1745 cc - off - ICMP6_NIRLEN - 1)
1750 cp++; /* skip length */
1752 safeputc(*cp & 0xff);
1758 cp = dnsdecode((const u_char *)cp, end,
1759 (const u_char *)(ni + 1), dnsname,
1766 * name-lookup special handling for
1769 if (cp + 1 <= end && !*cp &&
1770 strlen(dnsname) > 0) {
1771 dnsname[strlen(dnsname) - 1] = '\0';
1774 printf("%s%s", i > 0 ? "," : "",
1778 if (options & F_VERBOSE) {
1783 (void)printf(" ("); /*)*/
1785 switch (ni->ni_code) {
1786 case ICMP6_NI_REFUSED:
1787 (void)printf("refused");
1790 case ICMP6_NI_UNKNOWN:
1791 (void)printf("unknown qtype");
1796 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1797 /* case of refusion, unknown */
1802 memcpy(&t, &buf[off+ICMP6ECHOLEN+8], sizeof(t));
1803 ttl = (int32_t)ntohl(t);
1806 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1807 (void)printf("TTL=%d:meaningless",
1811 (void)printf("TTL=%d:invalid",
1814 (void)printf("TTL=%d", ttl);
1824 cp = (u_char *)ni + ICMP6_NIRLEN;
1833 if (buf[off + ICMP6_NIRLEN] !=
1834 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1837 (void)printf("invalid namelen:%d/%lu",
1838 buf[off + ICMP6_NIRLEN],
1839 (u_long)cc - off - ICMP6_NIRLEN - 1);
1849 /* We've got something other than an ECHOREPLY */
1850 if (!(options & F_VERBOSE))
1852 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1856 if (!(options & F_FLOOD)) {
1857 (void)putchar('\n');
1858 if (options & F_VERBOSE)
1860 (void)fflush(stdout);
1866 pr_exthdrs(struct msghdr *mhdr)
1873 bufp = mhdr->msg_control;
1874 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1875 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1876 if (cm->cmsg_level != IPPROTO_IPV6)
1879 bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp);
1882 switch (cm->cmsg_type) {
1884 printf(" HbH Options: ");
1885 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1888 #ifdef IPV6_RTHDRDSTOPTS
1889 case IPV6_RTHDRDSTOPTS:
1891 printf(" Dst Options: ");
1892 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1895 printf(" Routing: ");
1896 pr_rthdr(CMSG_DATA(cm), (size_t)bufsize);
1903 pr_ip6opt(void *extbuf, size_t bufsize)
1905 struct ip6_hbh *ext;
1908 socklen_t extlen, len;
1914 ext = (struct ip6_hbh *)extbuf;
1915 extlen = (ext->ip6h_len + 1) * 8;
1916 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1917 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1920 * Bounds checking on the ancillary data buffer:
1921 * subtract the size of a cmsg structure from the buffer size.
1923 if (bufsize < (extlen + CMSG_SPACE(0))) {
1924 extlen = bufsize - CMSG_SPACE(0);
1925 warnx("options truncated, showing only %u (total=%u)",
1926 (unsigned int)(extlen / 8 - 1),
1927 (unsigned int)(ext->ip6h_len));
1932 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1933 &type, &len, &databuf);
1934 if (currentlen == -1)
1938 * Note that inet6_opt_next automatically skips any padding
1943 offset = inet6_opt_get_val(databuf, offset,
1944 &value4, sizeof(value4));
1945 printf(" Jumbo Payload Opt: Length %u\n",
1946 (u_int32_t)ntohl(value4));
1948 case IP6OPT_ROUTER_ALERT:
1950 offset = inet6_opt_get_val(databuf, offset,
1951 &value2, sizeof(value2));
1952 printf(" Router Alert Opt: Type %u\n",
1956 printf(" Received Opt %u len %lu\n",
1957 type, (unsigned long)len);
1965 pr_rthdr(void *extbuf, size_t bufsize)
1967 struct in6_addr *in6;
1968 char ntopbuf[INET6_ADDRSTRLEN];
1969 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1970 int i, segments, origsegs, rthsize, size0, size1;
1972 /* print fixed part of the header */
1973 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1974 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1975 if ((segments = inet6_rth_segments(extbuf)) >= 0) {
1976 printf("%d segments, ", segments);
1977 printf("%d left\n", rh->ip6r_segleft);
1979 printf("segments unknown, ");
1980 printf("%d left\n", rh->ip6r_segleft);
1985 * Bounds checking on the ancillary data buffer. When calculating
1986 * the number of items to show keep in mind:
1987 * - The size of the cmsg structure
1988 * - The size of one segment (the size of a Type 0 routing header)
1989 * - When dividing add a fudge factor of one in case the
1990 * dividend is not evenly divisible by the divisor
1992 rthsize = (rh->ip6r_len + 1) * 8;
1993 if (bufsize < (rthsize + CMSG_SPACE(0))) {
1994 origsegs = segments;
1995 size0 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 0);
1996 size1 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 1);
1997 segments -= (rthsize - (bufsize - CMSG_SPACE(0))) /
1998 (size1 - size0) + 1;
1999 warnx("segments truncated, showing only %d (total=%d)",
2000 segments, origsegs);
2003 for (i = 0; i < segments; i++) {
2004 in6 = inet6_rth_getaddr(extbuf, i);
2006 printf(" [%d]<NULL>\n", i);
2008 if (!inet_ntop(AF_INET6, in6, ntopbuf,
2010 strlcpy(ntopbuf, "?", sizeof(ntopbuf));
2011 printf(" [%d]%s\n", i, ntopbuf);
2020 pr_bitrange(u_int32_t v, int soff, int ii)
2027 /* shift till we have 0x01 */
2028 if ((v & 0x01) == 0) {
2030 printf("-%u", soff + off - 1);
2041 case 0x04: case 0x0c:
2052 /* we have 0x01 with us */
2053 for (i = 0; i < 32 - off; i++) {
2054 if ((v & (0x01 << i)) == 0)
2058 printf(" %u", soff + off);
2066 pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
2067 /* ni->qtype must be SUPTYPES */
2071 const u_char *cp, *end;
2074 u_int16_t words; /*32bit count*/
2077 #define MAXQTYPES (1 << 16)
2081 cp = (u_char *)(ni + 1);
2082 end = ((u_char *)ni) + nilen;
2086 printf("NodeInfo Supported Qtypes");
2087 if (options & F_VERBOSE) {
2088 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
2089 printf(", compressed bitmap");
2091 printf(", raw bitmap");
2095 clen = (size_t)(end - cp);
2096 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
2097 if (clen == 0 || clen > MAXQTYPES / 8 ||
2103 if (clen < sizeof(cbit) || clen % sizeof(v))
2105 memcpy(&cbit, cp, sizeof(cbit));
2106 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
2110 clen = ntohs(cbit.words) * sizeof(v);
2111 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
2116 for (off = 0; off < clen; off += sizeof(v)) {
2117 memcpy(&v, cp + off, sizeof(v));
2118 v = (u_int32_t)ntohl(v);
2119 b = pr_bitrange(v, (int)(cur + off * 8), b);
2121 /* flush the remaining bits */
2122 b = pr_bitrange(0, (int)(cur + off * 8), b);
2126 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
2127 cur += ntohs(cbit.skip) * 32;
2132 pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
2133 /* ni->qtype must be NODEADDR */
2135 u_char *cp = (u_char *)(ni + 1);
2136 char ntop_buf[INET6_ADDRSTRLEN];
2139 nilen -= sizeof(struct icmp6_nodeinfo);
2141 if (options & F_VERBOSE) {
2142 switch (ni->ni_code) {
2143 case ICMP6_NI_REFUSED:
2144 (void)printf("refused");
2146 case ICMP6_NI_UNKNOWN:
2147 (void)printf("unknown qtype");
2150 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
2151 (void)printf(" truncated");
2155 printf(" no address\n");
2158 * In icmp-name-lookups 05 and later, TTL of each returned address
2159 * is contained in the resposne. We try to detect the version
2160 * by the length of the data, but note that the detection algorithm
2161 * is incomplete. We assume the latest draft by default.
2163 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
2171 memcpy(&t, cp, sizeof(t));
2172 ttl = (u_int32_t)ntohl(t);
2173 cp += sizeof(u_int32_t);
2174 nilen -= sizeof(u_int32_t);
2177 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
2179 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2180 printf(" %s", ntop_buf);
2182 if (ttl == 0xffffffff) {
2184 * XXX: can this convention be applied to all
2185 * type of TTL (i.e. non-ND TTL)?
2187 printf("(TTL=infty)");
2190 printf("(TTL=%u)", ttl);
2194 nilen -= sizeof(struct in6_addr);
2195 cp += sizeof(struct in6_addr);
2200 get_hoplim(struct msghdr *mhdr)
2204 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2205 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2206 if (cm->cmsg_len == 0)
2209 if (cm->cmsg_level == IPPROTO_IPV6 &&
2210 cm->cmsg_type == IPV6_HOPLIMIT &&
2211 cm->cmsg_len == CMSG_LEN(sizeof(int))) {
2214 memcpy(&r, CMSG_DATA(cm), sizeof(r));
2222 static struct in6_pktinfo *
2223 get_rcvpktinfo(struct msghdr *mhdr)
2225 static struct in6_pktinfo pi;
2228 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2229 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2230 if (cm->cmsg_len == 0)
2233 if (cm->cmsg_level == IPPROTO_IPV6 &&
2234 cm->cmsg_type == IPV6_PKTINFO &&
2235 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) {
2236 memcpy(&pi, CMSG_DATA(cm), sizeof(pi));
2245 get_pathmtu(struct msghdr *mhdr)
2247 #ifdef IPV6_RECVPATHMTU
2249 struct ip6_mtuinfo mtuctl;
2251 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2252 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2253 if (cm->cmsg_len == 0)
2256 if (cm->cmsg_level == IPPROTO_IPV6 &&
2257 cm->cmsg_type == IPV6_PATHMTU &&
2258 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2259 memcpy(&mtuctl, CMSG_DATA(cm), sizeof(mtuctl));
2262 * If the notified destination is different from
2263 * the one we are pinging, just ignore the info.
2264 * We check the scope ID only when both notified value
2265 * and our own value have non-0 values, because we may
2266 * have used the default scope zone ID for sending,
2267 * in which case the scope ID value is 0.
2269 if (!IN6_ARE_ADDR_EQUAL(&mtuctl.ip6m_addr.sin6_addr,
2271 (mtuctl.ip6m_addr.sin6_scope_id &&
2272 dst.sin6_scope_id &&
2273 mtuctl.ip6m_addr.sin6_scope_id !=
2274 dst.sin6_scope_id)) {
2275 if ((options & F_VERBOSE) != 0) {
2276 printf("path MTU for %s is notified. "
2278 pr_addr((struct sockaddr *)&mtuctl.ip6m_addr,
2279 sizeof(mtuctl.ip6m_addr)));
2285 * Ignore an invalid MTU. XXX: can we just believe
2288 if (mtuctl.ip6m_mtu < IPV6_MMTU)
2291 /* notification for our destination. return the MTU. */
2292 return((int)mtuctl.ip6m_mtu);
2305 onint(int notused __unused)
2308 * When doing reverse DNS lookups, the seenint flag might not
2309 * be noticed for a while. Just exit if we get a second SIGINT.
2311 if ((options & F_HOSTNAME) && seenint != 0)
2312 _exit(nreceived ? 0 : 2);
2317 * Print out statistics.
2323 (void)printf("\n--- %s ping6 statistics ---\n", hostname);
2324 (void)printf("%ld packets transmitted, ", ntransmitted);
2325 (void)printf("%ld packets received, ", nreceived);
2327 (void)printf("+%ld duplicates, ", nrepeats);
2329 if (nreceived > ntransmitted)
2330 (void)printf("-- somebody's duplicating packets!");
2332 (void)printf("%.1f%% packet loss",
2333 ((((double)ntransmitted - nreceived) * 100.0) /
2337 printf(", %ld packets out of wait time", nrcvtimeout);
2338 (void)putchar('\n');
2339 if (nreceived && timing) {
2340 /* Only display average to microseconds */
2341 double num = nreceived + nrepeats;
2342 double avg = tsum / num;
2343 double dev = sqrt(tsumsq / num - avg * avg);
2345 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2346 tmin, avg, tmax, dev);
2347 (void)fflush(stdout);
2349 (void)fflush(stdout);
2353 static const char *niqcode[] = {
2355 "DNS label", /*or empty*/
2360 static const char *nircode[] = {
2361 "Success", "Refused", "Unknown",
2367 * Print a descriptive string about an ICMP header.
2370 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2372 char ntop_buf[INET6_ADDRSTRLEN];
2373 struct nd_redirect *red;
2374 struct icmp6_nodeinfo *ni;
2375 char dnsname[MAXDNAME + 1];
2379 switch (icp->icmp6_type) {
2380 case ICMP6_DST_UNREACH:
2381 switch (icp->icmp6_code) {
2382 case ICMP6_DST_UNREACH_NOROUTE:
2383 (void)printf("No Route to Destination\n");
2385 case ICMP6_DST_UNREACH_ADMIN:
2386 (void)printf("Destination Administratively "
2389 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2390 (void)printf("Destination Unreachable Beyond Scope\n");
2392 case ICMP6_DST_UNREACH_ADDR:
2393 (void)printf("Destination Host Unreachable\n");
2395 case ICMP6_DST_UNREACH_NOPORT:
2396 (void)printf("Destination Port Unreachable\n");
2399 (void)printf("Destination Unreachable, Bad Code: %d\n",
2403 /* Print returned IP header information */
2404 pr_retip((struct ip6_hdr *)(icp + 1), end);
2406 case ICMP6_PACKET_TOO_BIG:
2407 (void)printf("Packet too big mtu = %d\n",
2408 (int)ntohl(icp->icmp6_mtu));
2409 pr_retip((struct ip6_hdr *)(icp + 1), end);
2411 case ICMP6_TIME_EXCEEDED:
2412 switch (icp->icmp6_code) {
2413 case ICMP6_TIME_EXCEED_TRANSIT:
2414 (void)printf("Time to live exceeded\n");
2416 case ICMP6_TIME_EXCEED_REASSEMBLY:
2417 (void)printf("Frag reassembly time exceeded\n");
2420 (void)printf("Time exceeded, Bad Code: %d\n",
2424 pr_retip((struct ip6_hdr *)(icp + 1), end);
2426 case ICMP6_PARAM_PROB:
2427 (void)printf("Parameter problem: ");
2428 switch (icp->icmp6_code) {
2429 case ICMP6_PARAMPROB_HEADER:
2430 (void)printf("Erroneous Header ");
2432 case ICMP6_PARAMPROB_NEXTHEADER:
2433 (void)printf("Unknown Nextheader ");
2435 case ICMP6_PARAMPROB_OPTION:
2436 (void)printf("Unrecognized Option ");
2439 (void)printf("Bad code(%d) ", icp->icmp6_code);
2442 (void)printf("pointer = 0x%02x\n",
2443 (u_int32_t)ntohl(icp->icmp6_pptr));
2444 pr_retip((struct ip6_hdr *)(icp + 1), end);
2446 case ICMP6_ECHO_REQUEST:
2447 (void)printf("Echo Request");
2448 /* XXX ID + Seq + Data */
2450 case ICMP6_ECHO_REPLY:
2451 (void)printf("Echo Reply");
2452 /* XXX ID + Seq + Data */
2454 case ICMP6_MEMBERSHIP_QUERY:
2455 (void)printf("Listener Query");
2457 case ICMP6_MEMBERSHIP_REPORT:
2458 (void)printf("Listener Report");
2460 case ICMP6_MEMBERSHIP_REDUCTION:
2461 (void)printf("Listener Done");
2463 case ND_ROUTER_SOLICIT:
2464 (void)printf("Router Solicitation");
2466 case ND_ROUTER_ADVERT:
2467 (void)printf("Router Advertisement");
2469 case ND_NEIGHBOR_SOLICIT:
2470 (void)printf("Neighbor Solicitation");
2472 case ND_NEIGHBOR_ADVERT:
2473 (void)printf("Neighbor Advertisement");
2476 red = (struct nd_redirect *)icp;
2477 (void)printf("Redirect\n");
2478 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2480 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2481 (void)printf("Destination: %s", ntop_buf);
2482 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2484 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2485 (void)printf(" New Target: %s", ntop_buf);
2487 case ICMP6_NI_QUERY:
2488 (void)printf("Node Information Query");
2489 /* XXX ID + Seq + Data */
2490 ni = (struct icmp6_nodeinfo *)icp;
2491 l = end - (u_char *)(ni + 1);
2493 switch (ntohs(ni->ni_qtype)) {
2495 (void)printf("NOOP");
2497 case NI_QTYPE_SUPTYPES:
2498 (void)printf("Supported qtypes");
2501 (void)printf("DNS name");
2503 case NI_QTYPE_NODEADDR:
2504 (void)printf("nodeaddr");
2506 case NI_QTYPE_IPV4ADDR:
2507 (void)printf("IPv4 nodeaddr");
2510 (void)printf("unknown qtype");
2513 if (options & F_VERBOSE) {
2514 switch (ni->ni_code) {
2515 case ICMP6_NI_SUBJ_IPV6:
2516 if (l == sizeof(struct in6_addr) &&
2517 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2518 sizeof(ntop_buf)) != NULL) {
2519 (void)printf(", subject=%s(%s)",
2520 niqcode[ni->ni_code], ntop_buf);
2523 /* backward compat to -W */
2524 (void)printf(", oldfqdn");
2526 (void)printf(", invalid");
2530 case ICMP6_NI_SUBJ_FQDN:
2531 if (end == (u_char *)(ni + 1)) {
2532 (void)printf(", no subject");
2535 printf(", subject=%s", niqcode[ni->ni_code]);
2536 cp = (const u_char *)(ni + 1);
2537 cp = dnsdecode(cp, end, NULL, dnsname,
2540 printf("(%s)", dnsname);
2542 printf("(invalid)");
2544 case ICMP6_NI_SUBJ_IPV4:
2545 if (l == sizeof(struct in_addr) &&
2546 inet_ntop(AF_INET, ni + 1, ntop_buf,
2547 sizeof(ntop_buf)) != NULL) {
2548 (void)printf(", subject=%s(%s)",
2549 niqcode[ni->ni_code], ntop_buf);
2551 (void)printf(", invalid");
2554 (void)printf(", invalid");
2559 case ICMP6_NI_REPLY:
2560 (void)printf("Node Information Reply");
2561 /* XXX ID + Seq + Data */
2562 ni = (struct icmp6_nodeinfo *)icp;
2564 switch (ntohs(ni->ni_qtype)) {
2566 (void)printf("NOOP");
2568 case NI_QTYPE_SUPTYPES:
2569 (void)printf("Supported qtypes");
2572 (void)printf("DNS name");
2574 case NI_QTYPE_NODEADDR:
2575 (void)printf("nodeaddr");
2577 case NI_QTYPE_IPV4ADDR:
2578 (void)printf("IPv4 nodeaddr");
2581 (void)printf("unknown qtype");
2584 if (options & F_VERBOSE) {
2585 if (ni->ni_code > nitems(nircode))
2586 printf(", invalid");
2588 printf(", %s", nircode[ni->ni_code]);
2592 (void)printf("Bad ICMP type: %d", icp->icmp6_type);
2598 * Print an IP6 header.
2601 pr_iph(struct ip6_hdr *ip6)
2603 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2605 char ntop_buf[INET6_ADDRSTRLEN];
2607 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2608 tc = (tc >> 4) & 0x0f;
2609 tc |= (ip6->ip6_vfc << 4);
2611 printf("Vr TC Flow Plen Nxt Hlim\n");
2612 printf(" %1x %02x %05x %04x %02x %02x\n",
2613 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2614 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2615 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2616 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2617 printf("%s->", ntop_buf);
2618 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2619 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2620 printf("%s\n", ntop_buf);
2625 * Return an ascii host address as a dotted quad and optionally with
2629 pr_addr(struct sockaddr *addr, int addrlen)
2631 static char buf[NI_MAXHOST];
2634 if ((options & F_HOSTNAME) == 0)
2635 flag |= NI_NUMERICHOST;
2637 if (cap_getnameinfo(capdns, addr, addrlen, buf, sizeof(buf), NULL, 0,
2646 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2649 pr_retip(struct ip6_hdr *ip6, u_char *end)
2651 u_char *cp = (u_char *)ip6, nh;
2654 if ((size_t)(end - (u_char *)ip6) < sizeof(*ip6)) {
2659 hlen = sizeof(*ip6);
2663 while (end - cp >= 8) {
2669 case IPPROTO_HOPOPTS:
2671 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2672 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2674 case IPPROTO_DSTOPTS:
2676 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2677 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2679 case IPPROTO_FRAGMENT:
2681 hlen = sizeof(struct ip6_frag);
2682 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2684 case IPPROTO_ROUTING:
2686 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2687 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2692 memcpy(&ah, cp, sizeof(ah));
2693 hlen = (ah.ah_len+2) << 2;
2697 case IPPROTO_ICMPV6:
2698 printf("ICMP6: type = %d, code = %d\n",
2705 printf("TCP: from port %u, to port %u (decimal)\n",
2706 (*cp * 256 + *(cp + 1)),
2707 (*(cp + 2) * 256 + *(cp + 3)));
2710 printf("UDP: from port %u, to port %u (decimal)\n",
2711 (*cp * 256 + *(cp + 1)),
2712 (*(cp + 2) * 256 + *(cp + 3)));
2715 printf("Unknown Header(%d)\n", nh);
2719 if ((cp += hlen) >= end)
2734 fill(char *bp, char *patp)
2740 for (cp = patp; *cp; cp++)
2742 errx(1, "patterns must be specified as hex digits");
2744 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2745 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2746 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2747 &pat[13], &pat[14], &pat[15]);
2752 (size_t)kk <= MAXDATALEN - 8 + sizeof(struct tv32) + ii;
2754 for (jj = 0; jj < ii; ++jj)
2755 bp[jj + kk] = pat[jj];
2756 if (!(options & F_QUIET)) {
2757 (void)printf("PATTERN: 0x");
2758 for (jj = 0; jj < ii; ++jj)
2759 (void)printf("%02x", bp[jj] & 0xFF);
2765 #ifdef IPSEC_POLICY_IPSEC
2767 setpolicy(int so __unused, char *policy)
2772 return 0; /* ignore */
2774 buf = ipsec_set_policy(policy, strlen(policy));
2776 errx(1, "%s", ipsec_strerror());
2777 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2778 ipsec_get_policylen(buf)) < 0)
2779 warnx("Unable to set IPsec policy");
2788 nigroup(char *name, int nig_oldmcprefix)
2793 u_int8_t digest[16];
2796 char hbuf[NI_MAXHOST];
2797 struct in6_addr in6;
2800 p = strchr(name, '.');
2802 p = name + strlen(name);
2804 if (l > 63 || l > sizeof(hbuf) - 1)
2805 return NULL; /*label too long*/
2806 strncpy(hbuf, name, l);
2807 hbuf[(int)l] = '\0';
2809 for (q = name; *q; q++) {
2810 if (isupper(*(unsigned char *)q))
2811 *q = tolower(*(unsigned char *)q);
2814 /* generate 16 bytes of pseudo-random value. */
2815 memset(&ctxt, 0, sizeof(ctxt));
2818 MD5Update(&ctxt, &c, sizeof(c));
2819 MD5Update(&ctxt, (unsigned char *)name, l);
2820 MD5Final(digest, &ctxt);
2822 if (nig_oldmcprefix) {
2823 /* draft-ietf-ipngwg-icmp-name-lookup */
2824 valid = inet_pton(AF_INET6, "ff02::2:0000:0000", &in6);
2827 valid = inet_pton(AF_INET6, "ff02::2:ff00:0000", &in6);
2830 return NULL; /*XXX*/
2832 if (nig_oldmcprefix) {
2833 /* draft-ietf-ipngwg-icmp-name-lookup */
2834 bcopy(digest, &in6.s6_addr[12], 4);
2837 bcopy(digest, &in6.s6_addr[13], 3);
2840 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2843 return strdup(hbuf);
2846 static cap_channel_t *
2849 cap_channel_t *capcas, *capdnsloc;
2851 const char *types[2];
2854 capcas = cap_init();
2856 err(1, "unable to create casper process");
2857 capdnsloc = cap_service_open(capcas, "system.dns");
2858 /* Casper capability no longer needed. */
2860 if (capdnsloc == NULL)
2861 err(1, "unable to open system.dns service");
2863 types[0] = "NAME2ADDR";
2864 types[1] = "ADDR2NAME";
2865 if (cap_dns_type_limit(capdnsloc, types, nitems(types)) < 0)
2866 err(1, "unable to limit access to system.dns service");
2867 families[0] = AF_INET6;
2868 if (cap_dns_family_limit(capdnsloc, families, nitems(families)) < 0)
2869 err(1, "unable to limit access to system.dns service");