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 int tclass = -1; /* traffic class */
233 static u_char *packet = NULL;
234 static cap_channel_t *capdns;
237 static long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
238 static long npackets; /* max packets to transmit */
239 static long nreceived; /* # of packets we got back */
240 static long nrepeats; /* number of duplicates */
241 static long ntransmitted; /* sequence # for outbound packets = #sent */
242 static int interval = 1000; /* interval between packets in ms */
243 static int waittime = MAXWAIT; /* timeout for each packet */
244 static long nrcvtimeout = 0; /* # of packets we got back after waittime */
247 static int timing; /* flag to do timing */
248 static double tmin = 999999999.0; /* minimum round trip time */
249 static double tmax = 0.0; /* maximum round trip time */
250 static double tsum = 0.0; /* sum of all times, for doing average */
251 static double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
253 /* for node addresses */
254 static u_short naflags;
256 /* for ancillary data(advanced API) */
257 static struct msghdr smsghdr;
258 static struct iovec smsgiov;
259 static char *scmsg = 0;
261 static volatile sig_atomic_t seenint;
263 static volatile sig_atomic_t seeninfo;
266 int main(int, char *[]);
267 static cap_channel_t *capdns_setup(void);
268 static void fill(char *, char *);
269 static int get_hoplim(struct msghdr *);
270 static int get_pathmtu(struct msghdr *);
271 static struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
272 static void onsignal(int);
273 static void onint(int);
274 static size_t pingerlen(void);
275 static int pinger(void);
276 static const char *pr_addr(struct sockaddr *, int);
277 static void pr_icmph(struct icmp6_hdr *, u_char *);
278 static void pr_iph(struct ip6_hdr *);
279 static void pr_suptypes(struct icmp6_nodeinfo *, size_t);
280 static void pr_nodeaddr(struct icmp6_nodeinfo *, int);
281 static int myechoreply(const struct icmp6_hdr *);
282 static int mynireply(const struct icmp6_nodeinfo *);
283 static const char *dnsdecode(const u_char *, const u_char *, const u_char *,
285 static void pr_pack(u_char *, int, struct msghdr *);
286 static void pr_exthdrs(struct msghdr *);
287 static void pr_ip6opt(void *, size_t);
288 static void pr_rthdr(void *, size_t);
289 static int pr_bitrange(u_int32_t, int, int);
290 static void pr_retip(struct ip6_hdr *, u_char *);
291 static void summary(void);
292 static int setpolicy(int, char *);
293 static char *nigroup(char *, int);
294 static void usage(void);
297 main(int argc, char *argv[])
299 struct timespec last, intvl;
300 struct sockaddr_in6 from, *sin6;
301 struct addrinfo hints, *res;
302 struct sigaction si_sa;
304 int almost_done, ch, hold, packlen, preload, optval, error;
305 int nig_oldmcprefix = -1;
307 char *e, *target, *ifname = NULL, *gateway = NULL;
309 struct cmsghdr *scmsgp = NULL;
310 /* For control (ancillary) data received from recvmsg() */
311 u_char cm[CONTROLLEN];
312 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
317 struct in6_pktinfo pktinfo;
318 char *cmsg_pktinfo = NULL;
319 struct ip6_rthdr *rthdr = NULL;
320 #ifdef IPSEC_POLICY_IPSEC
321 char *policy_in = NULL;
322 char *policy_out = NULL;
327 #ifdef IPV6_USE_MIN_MTU
330 cap_rights_t rights_srecv;
331 cap_rights_t rights_ssend;
332 cap_rights_t rights_stdin;
334 /* just to be sure */
335 memset(&smsghdr, 0, sizeof(smsghdr));
336 memset(&smsgiov, 0, sizeof(smsgiov));
337 memset(&pktinfo, 0, sizeof(pktinfo));
339 intvl.tv_sec = interval / 1000;
340 intvl.tv_nsec = interval % 1000 * 1000000;
342 alarmtimeout = preload = 0;
343 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
344 capdns = capdns_setup();
348 #ifdef IPSEC_POLICY_IPSEC
352 #endif /*IPSEC_POLICY_IPSEC*/
354 while ((ch = getopt(argc, argv,
355 "a:b:c:DdfHg:h:I:i:l:mnNop:qrRS:s:tvwWx:X:z:" ADDOPTS)) != -1) {
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");
416 npackets = strtol(optarg, &e, 10);
417 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
419 "illegal number of packets -- %s", optarg);
422 options |= F_DONTFRAG;
425 options |= F_SO_DEBUG;
430 errx(1, "Must be superuser to flood ping");
433 setbuf(stdout, (char *)NULL);
439 options |= F_HOSTNAME;
441 case 'h': /* hoplimit */
442 hoplimit = strtol(optarg, &e, 10);
443 if (*optarg == '\0' || *e != '\0')
444 errx(1, "illegal hoplimit %s", optarg);
445 if (255 < hoplimit || hoplimit < -1)
447 "illegal hoplimit -- %s", optarg);
451 options |= F_INTERFACE;
452 #ifndef USE_SIN6_SCOPE_ID
456 case 'i': /* wait between sending packets */
457 t = strtod(optarg, &e);
458 if (*optarg == '\0' || *e != '\0')
459 errx(1, "illegal timing interval %s", optarg);
460 if (t < 1 && getuid()) {
461 errx(1, "%s: only root may use interval < 1s",
464 intvl.tv_sec = (time_t)t;
466 (long)((t - intvl.tv_sec) * 1000000000);
467 if (intvl.tv_sec < 0)
468 errx(1, "illegal timing interval %s", optarg);
469 /* less than 1/hz does not make sense */
470 if (intvl.tv_sec == 0 && intvl.tv_nsec < 1000) {
471 warnx("too small interval, raised to .000001");
472 intvl.tv_nsec = 1000;
474 options |= F_INTERVAL;
479 errx(1, "Must be superuser to preload");
481 preload = strtol(optarg, &e, 10);
482 if (preload < 0 || *optarg == '\0' || *e != '\0')
483 errx(1, "illegal preload value -- %s", optarg);
486 #ifdef IPV6_USE_MIN_MTU
490 errx(1, "-%c is not supported on this platform", ch);
494 options &= ~F_HOSTNAME;
497 options |= F_NIGROUP;
503 case 'p': /* fill buffer with user pattern */
504 options |= F_PINGFILLED;
505 fill((char *)datap, optarg);
511 options |= F_AUDIBLE;
517 memset(&hints, 0, sizeof(struct addrinfo));
518 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
519 hints.ai_family = AF_INET6;
520 hints.ai_socktype = SOCK_RAW;
521 hints.ai_protocol = IPPROTO_ICMPV6;
523 error = cap_getaddrinfo(capdns, optarg, NULL, &hints, &res);
525 errx(1, "invalid source address: %s",
526 gai_strerror(error));
529 * res->ai_family must be AF_INET6 and res->ai_addrlen
530 * must be sizeof(src).
532 memcpy(&src, res->ai_addr, res->ai_addrlen);
533 srclen = res->ai_addrlen;
535 options |= F_SRCADDR;
537 case 's': /* size of packet to send */
538 datalen = strtol(optarg, &e, 10);
539 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
540 errx(1, "illegal datalen value -- %s", optarg);
541 if (datalen > MAXDATALEN) {
543 "datalen value too large, maximum is %d",
548 options &= ~F_NOUSERDATA;
549 options |= F_SUPTYPES;
552 options |= F_VERBOSE;
555 options &= ~F_NOUSERDATA;
559 options &= ~F_NOUSERDATA;
560 options |= F_FQDNOLD;
563 t = strtod(optarg, &e);
564 if (*e || e == optarg || t > (double)INT_MAX)
565 err(EX_USAGE, "invalid timing interval: `%s'",
567 options |= F_WAITTIME;
571 alarmtimeout = strtoul(optarg, &e, 0);
572 if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX))
573 errx(EX_USAGE, "invalid timeout: `%s'",
575 if (alarmtimeout > MAXALARM)
576 errx(EX_USAGE, "invalid timeout: `%s' > %d",
578 alarm((int)alarmtimeout);
580 case 'z': /* traffic class */
581 tclass = strtol(optarg, &e, 10);
582 if (*optarg == '\0' || *e != '\0')
583 errx(1, "illegal traffic class %s", optarg);
584 if (255 < tclass || tclass < -1)
586 "illegal traffic class -- %s", optarg);
589 #ifdef IPSEC_POLICY_IPSEC
592 if (!strncmp("in", optarg, 2)) {
593 if ((policy_in = strdup(optarg)) == NULL)
595 } else if (!strncmp("out", optarg, 3)) {
596 if ((policy_out = strdup(optarg)) == NULL)
599 errx(1, "invalid security policy");
603 options |= F_AUTHHDR;
606 options |= F_ENCRYPT;
608 #endif /*IPSEC_POLICY_IPSEC*/
625 #ifdef IPV6_RECVRTHDR /* 2292bis */
626 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
629 rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1);
632 errx(1, "too many intermediate hops");
638 if (options & F_NIGROUP) {
639 target = nigroup(argv[argc - 1], nig_oldmcprefix);
640 if (target == NULL) {
645 target = argv[argc - 1];
647 /* cap_getaddrinfo */
648 memset(&hints, 0, sizeof(struct addrinfo));
649 hints.ai_flags = AI_CANONNAME;
650 hints.ai_family = AF_INET6;
651 hints.ai_socktype = SOCK_RAW;
652 hints.ai_protocol = IPPROTO_ICMPV6;
654 error = cap_getaddrinfo(capdns, target, NULL, &hints, &res);
656 errx(1, "%s", gai_strerror(error));
657 if (res->ai_canonname)
658 hostname = strdup(res->ai_canonname);
663 errx(1, "cap_getaddrinfo failed");
665 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
667 if ((ssend = socket(res->ai_family, res->ai_socktype,
668 res->ai_protocol)) < 0)
669 err(1, "socket ssend");
670 if ((srecv = socket(res->ai_family, res->ai_socktype,
671 res->ai_protocol)) < 0)
672 err(1, "socket srecv");
675 /* set the source address if specified. */
676 if ((options & F_SRCADDR) != 0) {
677 /* properly fill sin6_scope_id */
678 if (IN6_IS_ADDR_LINKLOCAL(&src.sin6_addr) && (
679 IN6_IS_ADDR_LINKLOCAL(&dst.sin6_addr) ||
680 IN6_IS_ADDR_MC_LINKLOCAL(&dst.sin6_addr) ||
681 IN6_IS_ADDR_MC_NODELOCAL(&dst.sin6_addr))) {
682 if (src.sin6_scope_id == 0)
683 src.sin6_scope_id = dst.sin6_scope_id;
684 if (dst.sin6_scope_id == 0)
685 dst.sin6_scope_id = src.sin6_scope_id;
687 if (bind(ssend, (struct sockaddr *)&src, srclen) != 0)
690 /* set the gateway (next hop) if specified */
692 memset(&hints, 0, sizeof(hints));
693 hints.ai_family = AF_INET6;
694 hints.ai_socktype = SOCK_RAW;
695 hints.ai_protocol = IPPROTO_ICMPV6;
697 error = cap_getaddrinfo(capdns, gateway, NULL, &hints, &res);
699 errx(1, "cap_getaddrinfo for the gateway %s: %s",
700 gateway, gai_strerror(error));
702 if (res->ai_next && (options & F_VERBOSE))
703 warnx("gateway resolves to multiple addresses");
705 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_NEXTHOP,
706 res->ai_addr, res->ai_addrlen)) {
707 err(1, "setsockopt(IPV6_NEXTHOP)");
714 * let the kerel pass extension headers of incoming packets,
715 * for privileged socket options
717 if ((options & F_VERBOSE) != 0) {
720 #ifdef IPV6_RECVHOPOPTS
721 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
723 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
724 #else /* old adv. API */
725 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
727 err(1, "setsockopt(IPV6_HOPOPTS)");
729 #ifdef IPV6_RECVDSTOPTS
730 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
732 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
733 #else /* old adv. API */
734 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
736 err(1, "setsockopt(IPV6_DSTOPTS)");
738 #ifdef IPV6_RECVRTHDRDSTOPTS
739 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
741 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
745 /* revoke root privilege */
746 if (seteuid(getuid()) != 0)
747 err(1, "seteuid() failed");
748 if (setuid(getuid()) != 0)
749 err(1, "setuid() failed");
751 if ((options & F_FLOOD) && (options & F_INTERVAL))
752 errx(1, "-f and -i incompatible options");
754 if ((options & F_NOUSERDATA) == 0) {
755 if (datalen >= sizeof(struct tv32)) {
756 /* we can time transfer */
760 /* in F_VERBOSE case, we may get non-echoreply packets*/
761 if (options & F_VERBOSE)
762 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
764 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
766 /* suppress timing for node information query */
769 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
772 if (!(packet = (u_char *)malloc((u_int)packlen)))
773 err(1, "Unable to allocate packet");
774 if (!(options & F_PINGFILLED))
775 for (i = ICMP6ECHOLEN; i < packlen; ++i)
778 ident = getpid() & 0xFFFF;
779 arc4random_buf(nonce, sizeof(nonce));
781 if (options & F_DONTFRAG)
782 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_DONTFRAG,
783 &optval, sizeof(optval)) == -1)
784 err(1, "IPV6_DONTFRAG");
787 if (options & F_SO_DEBUG) {
788 (void)setsockopt(ssend, SOL_SOCKET, SO_DEBUG, (char *)&hold,
790 (void)setsockopt(srecv, SOL_SOCKET, SO_DEBUG, (char *)&hold,
793 optval = IPV6_DEFHLIM;
794 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
795 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
796 &optval, sizeof(optval)) == -1)
797 err(1, "IPV6_MULTICAST_HOPS");
798 #ifdef IPV6_USE_MIN_MTU
800 optval = mflag > 1 ? 0 : 1;
802 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
803 &optval, sizeof(optval)) == -1)
804 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
806 #ifdef IPV6_RECVPATHMTU
809 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVPATHMTU,
810 &optval, sizeof(optval)) == -1)
811 err(1, "setsockopt(IPV6_RECVPATHMTU)");
813 #endif /* IPV6_RECVPATHMTU */
814 #endif /* IPV6_USE_MIN_MTU */
817 #ifdef IPSEC_POLICY_IPSEC
818 if (options & F_POLICY) {
819 if (setpolicy(srecv, policy_in) < 0)
820 errx(1, "%s", ipsec_strerror());
821 if (setpolicy(ssend, policy_out) < 0)
822 errx(1, "%s", ipsec_strerror());
825 if (options & F_AUTHHDR) {
826 optval = IPSEC_LEVEL_REQUIRE;
827 #ifdef IPV6_AUTH_TRANS_LEVEL
828 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
829 &optval, sizeof(optval)) == -1)
830 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
831 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
832 &optval, sizeof(optval)) == -1)
833 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
835 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
836 &optval, sizeof(optval)) == -1)
837 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
838 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
839 &optval, sizeof(optval)) == -1)
840 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
843 if (options & F_ENCRYPT) {
844 optval = IPSEC_LEVEL_REQUIRE;
845 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
846 &optval, sizeof(optval)) == -1)
847 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
848 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
849 &optval, sizeof(optval)) == -1)
850 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
852 #endif /*IPSEC_POLICY_IPSEC*/
857 struct icmp6_filter filt;
858 if (!(options & F_VERBOSE)) {
859 ICMP6_FILTER_SETBLOCKALL(&filt);
860 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
861 (options & F_NODEADDR) || (options & F_SUPTYPES))
862 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
864 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
866 ICMP6_FILTER_SETPASSALL(&filt);
868 if (setsockopt(srecv, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
870 err(1, "setsockopt(ICMP6_FILTER)");
872 #endif /*ICMP6_FILTER*/
874 /* let the kerel pass extension headers of incoming packets */
875 if ((options & F_VERBOSE) != 0) {
878 #ifdef IPV6_RECVRTHDR
879 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
881 err(1, "setsockopt(IPV6_RECVRTHDR)");
882 #else /* old adv. API */
883 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RTHDR, &opton,
885 err(1, "setsockopt(IPV6_RTHDR)");
891 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
892 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
893 &optval, sizeof(optval)) == -1)
894 err(1, "IPV6_MULTICAST_LOOP");
897 /* Specify the outgoing interface and/or the source address */
899 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
902 ip6optlen += CMSG_SPACE(sizeof(int));
904 /* set IP6 packet options */
906 if ((scmsg = (char *)malloc(ip6optlen)) == NULL)
907 errx(1, "can't allocate enough memory");
908 smsghdr.msg_control = (caddr_t)scmsg;
909 smsghdr.msg_controllen = ip6optlen;
910 scmsgp = CMSG_FIRSTHDR(&smsghdr);
913 cmsg_pktinfo = CMSG_DATA(scmsgp);
914 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
915 scmsgp->cmsg_level = IPPROTO_IPV6;
916 scmsgp->cmsg_type = IPV6_PKTINFO;
917 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
920 /* set the outgoing interface */
922 #ifndef USE_SIN6_SCOPE_ID
923 /* pktinfo must have already been allocated */
924 if ((pktinfo.ipi6_ifindex = if_nametoindex(ifname)) == 0)
925 errx(1, "%s: invalid interface name", ifname);
927 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
928 errx(1, "%s: invalid interface name", ifname);
931 if (hoplimit != -1) {
932 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
933 scmsgp->cmsg_level = IPPROTO_IPV6;
934 scmsgp->cmsg_type = IPV6_HOPLIMIT;
935 memcpy(CMSG_DATA(scmsgp), &hoplimit, sizeof(hoplimit));
937 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
941 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_TCLASS,
942 &tclass, sizeof(tclass)) == -1)
943 err(1, "setsockopt(IPV6_TCLASS)");
946 if (argc > 1) { /* some intermediate addrs are specified */
950 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
951 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
952 scmsgp->cmsg_level = IPPROTO_IPV6;
953 scmsgp->cmsg_type = IPV6_RTHDR;
954 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
955 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
956 IPV6_RTHDR_TYPE_0, argc - 1);
958 errx(1, "can't initialize rthdr");
960 for (hops = 0; hops < argc - 1; hops++) {
961 memset(&hints, 0, sizeof(hints));
962 hints.ai_family = AF_INET6;
964 if ((error = cap_getaddrinfo(capdns, argv[hops], NULL, &hints,
966 errx(1, "%s", gai_strerror(error));
967 if (res->ai_addr->sa_family != AF_INET6)
969 "bad addr family of an intermediate addr");
970 sin6 = (struct sockaddr_in6 *)(void *)res->ai_addr;
971 if (inet6_rth_add(rthdr, &sin6->sin6_addr))
972 errx(1, "can't add an intermediate node");
976 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
979 /* From now on we will use only reverse DNS lookups. */
981 if (capdns != NULL) {
982 const char *types[1];
984 types[0] = "ADDR2NAME";
985 if (cap_dns_type_limit(capdns, types, nitems(types)) < 0)
986 err(1, "unable to limit access to system.dns service");
989 if (!(options & F_SRCADDR)) {
991 * get the source address. XXX since we revoked the root
992 * privilege, we cannot use a raw socket for this.
995 socklen_t len = sizeof(src);
997 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
998 err(1, "UDP socket");
1000 src.sin6_family = AF_INET6;
1001 src.sin6_addr = dst.sin6_addr;
1002 src.sin6_port = ntohs(DUMMY_PORT);
1003 src.sin6_scope_id = dst.sin6_scope_id;
1006 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
1007 (void *)&pktinfo, sizeof(pktinfo)))
1008 err(1, "UDP setsockopt(IPV6_PKTINFO)");
1010 if (hoplimit != -1 &&
1011 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
1012 (void *)&hoplimit, sizeof(hoplimit)))
1013 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
1015 if (hoplimit != -1 &&
1016 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
1017 (void *)&hoplimit, sizeof(hoplimit)))
1018 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
1021 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
1022 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
1023 err(1, "UDP setsockopt(IPV6_RTHDR)");
1025 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
1026 err(1, "UDP connect");
1028 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
1029 err(1, "getsockname");
1034 /* Save pktinfo in the ancillary data. */
1036 memcpy(cmsg_pktinfo, &pktinfo, sizeof(pktinfo));
1038 if (connect(ssend, (struct sockaddr *)&dst, sizeof(dst)) != 0)
1039 err(1, "connect() ssend");
1041 caph_cache_catpages();
1042 if (caph_enter_casper() < 0)
1043 err(1, "caph_enter_casper");
1045 cap_rights_init(&rights_stdin);
1046 if (caph_rights_limit(STDIN_FILENO, &rights_stdin) < 0)
1047 err(1, "caph_rights_limit stdin");
1048 if (caph_limit_stdout() < 0)
1049 err(1, "caph_limit_stdout");
1050 if (caph_limit_stderr() < 0)
1051 err(1, "caph_limit_stderr");
1053 cap_rights_init(&rights_srecv, CAP_RECV, CAP_EVENT, CAP_SETSOCKOPT);
1054 if (caph_rights_limit(srecv, &rights_srecv) < 0)
1055 err(1, "caph_rights_limit srecv");
1056 cap_rights_init(&rights_ssend, CAP_SEND, CAP_SETSOCKOPT);
1057 if (caph_rights_limit(ssend, &rights_ssend) < 0)
1058 err(1, "caph_rights_limit ssend");
1060 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
1062 if (datalen > (size_t)sockbufsize)
1063 warnx("you need -b to increase socket buffer size");
1064 if (setsockopt(ssend, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
1065 sizeof(sockbufsize)) < 0)
1066 err(1, "setsockopt(SO_SNDBUF)");
1067 if (setsockopt(srecv, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
1068 sizeof(sockbufsize)) < 0)
1069 err(1, "setsockopt(SO_RCVBUF)");
1072 if (datalen > 8 * 1024) /*XXX*/
1073 warnx("you need -b to increase socket buffer size");
1075 * When pinging the broadcast address, you can get a lot of
1076 * answers. Doing something so evil is useful if you are trying
1077 * to stress the ethernet, or just want to fill the arp cache
1078 * to get some stuff for /etc/ethers.
1081 setsockopt(srecv, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
1087 #ifndef USE_SIN6_SCOPE_ID
1088 #ifdef IPV6_RECVPKTINFO
1089 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
1090 sizeof(optval)) < 0)
1091 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
1092 #else /* old adv. API */
1093 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
1094 sizeof(optval)) < 0)
1095 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
1097 #endif /* USE_SIN6_SCOPE_ID */
1098 #ifdef IPV6_RECVHOPLIMIT
1099 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
1100 sizeof(optval)) < 0)
1101 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
1102 #else /* old adv. API */
1103 if (setsockopt(srecv, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
1104 sizeof(optval)) < 0)
1105 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
1108 cap_rights_clear(&rights_srecv, CAP_SETSOCKOPT);
1109 if (caph_rights_limit(srecv, &rights_srecv) < 0)
1110 err(1, "caph_rights_limit srecv setsockopt");
1111 cap_rights_clear(&rights_ssend, CAP_SETSOCKOPT);
1112 if (caph_rights_limit(ssend, &rights_ssend) < 0)
1113 err(1, "caph_rights_limit ssend setsockopt");
1115 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
1116 (unsigned long)(pingerlen() - 8));
1117 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
1118 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
1123 if (npackets != 0 && preload > npackets)
1128 clock_gettime(CLOCK_MONOTONIC, &last);
1130 sigemptyset(&si_sa.sa_mask);
1132 si_sa.sa_handler = onsignal;
1133 if (sigaction(SIGINT, &si_sa, 0) == -1)
1134 err(EX_OSERR, "sigaction SIGINT");
1137 if (sigaction(SIGINFO, &si_sa, 0) == -1)
1138 err(EX_OSERR, "sigaction SIGINFO");
1141 if (alarmtimeout > 0) {
1142 if (sigaction(SIGALRM, &si_sa, 0) == -1)
1143 err(EX_OSERR, "sigaction SIGALRM");
1145 if (options & F_FLOOD) {
1147 intvl.tv_nsec = 10000000;
1151 while (seenint == 0) {
1152 struct timespec now, timeout;
1154 struct iovec iov[2];
1158 /* signal handling */
1169 FD_SET(srecv, &rfds);
1170 clock_gettime(CLOCK_MONOTONIC, &now);
1171 timespecadd(&last, &intvl, &timeout);
1172 timespecsub(&timeout, &now, &timeout);
1173 if (timeout.tv_sec < 0)
1174 timespecclear(&timeout);
1176 n = pselect(srecv + 1, &rfds, NULL, NULL, &timeout, NULL);
1178 continue; /* EINTR */
1180 m.msg_name = (caddr_t)&from;
1181 m.msg_namelen = sizeof(from);
1182 memset(&iov, 0, sizeof(iov));
1183 iov[0].iov_base = (caddr_t)packet;
1184 iov[0].iov_len = packlen;
1187 memset(cm, 0, CONTROLLEN);
1188 m.msg_control = (void *)cm;
1189 m.msg_controllen = CONTROLLEN;
1191 cc = recvmsg(srecv, &m, 0);
1193 if (errno != EINTR) {
1198 } else if (cc == 0) {
1202 * receive control messages only. Process the
1203 * exceptions (currently the only possibility is
1204 * a path MTU notification.)
1206 if ((mtu = get_pathmtu(&m)) > 0) {
1207 if ((options & F_VERBOSE) != 0) {
1208 printf("new path MTU (%d) is "
1215 * an ICMPv6 message (probably an echoreply)
1218 pr_pack(packet, cc, &m);
1220 if (((options & F_ONCE) != 0 && nreceived > 0) ||
1221 (npackets > 0 && nreceived >= npackets))
1224 if (n == 0 || (options & F_FLOOD)) {
1225 if (npackets == 0 || ntransmitted < npackets)
1232 * If we're not transmitting any more packets,
1233 * change the timer to wait two round-trip times
1234 * if we've received any packets or (waittime)
1235 * milliseconds if we haven't.
1239 intvl.tv_sec = 2 * tmax / 1000;
1240 if (intvl.tv_sec == 0)
1243 intvl.tv_sec = waittime / 1000;
1245 waittime % 1000 * 1000000;
1248 clock_gettime(CLOCK_MONOTONIC, &last);
1249 if (ntransmitted - nreceived - 1 > nmissedmax) {
1250 nmissedmax = ntransmitted - nreceived - 1;
1251 if (options & F_MISSED)
1252 (void)write(STDOUT_FILENO, &BBELL, 1);
1256 sigemptyset(&si_sa.sa_mask);
1258 si_sa.sa_handler = SIG_IGN;
1259 sigaction(SIGINT, &si_sa, 0);
1260 sigaction(SIGALRM, &si_sa, 0);
1266 exit(nreceived == 0 ? 2 : 0);
1288 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1289 * will be added on by the kernel. The ID field is our UNIX process ID,
1290 * and the sequence number is an ascending integer. The first 8 bytes
1291 * of the data portion are used to hold a UNIX "timespec" struct in VAX
1292 * byte-order, to compute the round-trip time.
1299 if (options & F_FQDN)
1300 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1301 else if (options & F_FQDNOLD)
1303 else if (options & F_NODEADDR)
1304 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1305 else if (options & F_SUPTYPES)
1308 l = ICMP6ECHOLEN + datalen;
1316 struct icmp6_hdr *icp;
1317 struct iovec iov[2];
1319 struct icmp6_nodeinfo *nip;
1322 if (npackets && ntransmitted >= npackets)
1323 return(-1); /* no more transmission */
1325 icp = (struct icmp6_hdr *)outpack;
1326 nip = (struct icmp6_nodeinfo *)outpack;
1327 memset(icp, 0, sizeof(*icp));
1328 icp->icmp6_cksum = 0;
1329 seq = ntransmitted++;
1330 CLR(seq % mx_dup_ck);
1332 if (options & F_FQDN) {
1335 icp->icmp6_type = ICMP6_NI_QUERY;
1336 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1337 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1338 nip->ni_flags = htons(0);
1340 memcpy(nip->icmp6_ni_nonce, nonce,
1341 sizeof(nip->icmp6_ni_nonce));
1343 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1345 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1346 sizeof(dst.sin6_addr));
1347 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1349 } else if (options & F_FQDNOLD) {
1351 /* packet format in 03 draft - no Subject data on queries */
1352 icp->icmp6_type = ICMP6_NI_QUERY;
1353 icp->icmp6_code = 0; /* code field is always 0 */
1354 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1355 nip->ni_flags = htons(0);
1357 memcpy(nip->icmp6_ni_nonce, nonce,
1358 sizeof(nip->icmp6_ni_nonce));
1360 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1364 } else if (options & F_NODEADDR) {
1367 icp->icmp6_type = ICMP6_NI_QUERY;
1368 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1369 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1370 nip->ni_flags = naflags;
1372 memcpy(nip->icmp6_ni_nonce, nonce,
1373 sizeof(nip->icmp6_ni_nonce));
1375 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1377 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1378 sizeof(dst.sin6_addr));
1379 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1381 } else if (options & F_SUPTYPES) {
1384 icp->icmp6_type = ICMP6_NI_QUERY;
1385 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1386 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1387 /* we support compressed bitmap */
1388 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1390 memcpy(nip->icmp6_ni_nonce, nonce,
1391 sizeof(nip->icmp6_ni_nonce));
1393 memcpy(nip->icmp6_ni_nonce, &s, sizeof(s));
1398 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1399 icp->icmp6_code = 0;
1400 icp->icmp6_id = htons(ident);
1401 icp->icmp6_seq = htons(seq);
1405 (void)clock_gettime(CLOCK_MONOTONIC, &tv);
1407 * Truncate seconds down to 32 bits in order
1408 * to fit the timestamp within 8 bytes of the
1409 * packet. We're only concerned with
1410 * durations, not absolute times.
1412 tv32.tv32_sec = (uint32_t)htonl(tv.tv_sec);
1413 tv32.tv32_nsec = (uint32_t)htonl(tv.tv_nsec);
1414 memcpy(&outpack[ICMP6ECHOLEN], &tv32, sizeof(tv32));
1416 cc = ICMP6ECHOLEN + datalen;
1420 if (pingerlen() != cc)
1421 errx(1, "internal error; length mismatch");
1424 memset(&iov, 0, sizeof(iov));
1425 iov[0].iov_base = (caddr_t)outpack;
1426 iov[0].iov_len = cc;
1427 smsghdr.msg_iov = iov;
1428 smsghdr.msg_iovlen = 1;
1430 i = sendmsg(ssend, &smsghdr, 0);
1432 if (i < 0 || i != cc) {
1435 (void)printf("ping6: wrote %s %d chars, ret=%d\n",
1438 if (!(options & F_QUIET) && options & F_FLOOD)
1439 (void)write(STDOUT_FILENO, &DOT, 1);
1445 myechoreply(const struct icmp6_hdr *icp)
1447 if (ntohs(icp->icmp6_id) == ident)
1454 mynireply(const struct icmp6_nodeinfo *nip)
1456 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1457 nonce + sizeof(u_int16_t),
1458 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1465 * Decode a name from a DNS message.
1467 * Format of the message is described in RFC 1035 subsection 4.1.4.
1470 * sp - Pointer to a DNS pointer octet or to the first octet of a label
1472 * ep - Pointer to the end of the message (one step past the last octet).
1473 * base - Pointer to the beginning of the message.
1474 * buf - Buffer into which the decoded name will be saved.
1475 * bufsiz - Size of the buffer 'buf'.
1478 * Pointer to an octet immediately following the ending zero octet
1479 * of the decoded label, or NULL if an error occured.
1482 dnsdecode(const u_char *sp, const u_char *ep, const u_char *base, char *buf,
1487 char cresult[MAXDNAME + 1];
1498 if (i == 0 || cp != sp) {
1499 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1500 return NULL; /*result overrun*/
1506 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1507 /* DNS compression */
1511 comp = base + (i & 0x3f);
1512 if (dnsdecode(comp, cp, base, cresult,
1513 sizeof(cresult)) == NULL)
1515 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1516 return NULL; /*result overrun*/
1518 } else if ((i & 0x3f) == i) {
1520 return NULL; /*source overrun*/
1521 while (i-- > 0 && cp < ep) {
1522 l = snprintf(cresult, sizeof(cresult),
1523 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1524 if ((size_t)l >= sizeof(cresult) || l < 0)
1526 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1527 return NULL; /*result overrun*/
1531 return NULL; /*invalid label*/
1534 return NULL; /*not terminated*/
1541 * Print out the packet, if it came from us. This logic is necessary
1542 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1543 * which arrive ('tis only fair). This permits multiple copies of this
1544 * program to be run without having intermingled output (or statistics!).
1547 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1549 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1550 struct icmp6_hdr *icp;
1551 struct icmp6_nodeinfo *ni;
1554 struct sockaddr *from;
1556 const u_char *cp = NULL;
1557 u_char *dp, *end = buf + cc;
1558 struct in6_pktinfo *pktinfo = NULL;
1559 struct timespec tv, tp;
1561 double triptime = 0;
1566 char dnsname[MAXDNAME + 1];
1568 (void)clock_gettime(CLOCK_MONOTONIC, &tv);
1570 if (!mhdr || !mhdr->msg_name ||
1571 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1572 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1573 if (options & F_VERBOSE)
1574 warnx("invalid peername");
1577 from = (struct sockaddr *)mhdr->msg_name;
1578 fromlen = mhdr->msg_namelen;
1579 if (cc < (int)sizeof(struct icmp6_hdr)) {
1580 if (options & F_VERBOSE)
1581 warnx("packet too short (%d bytes) from %s", cc,
1582 pr_addr(from, fromlen));
1585 if (((mhdr->msg_flags & MSG_CTRUNC) != 0) &&
1586 (options & F_VERBOSE) != 0)
1587 warnx("some control data discarded, insufficient buffer size");
1588 icp = (struct icmp6_hdr *)buf;
1589 ni = (struct icmp6_nodeinfo *)buf;
1592 if ((hoplim = get_hoplim(mhdr)) == -1) {
1593 warnx("failed to get receiving hop limit");
1596 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1597 warnx("failed to get receiving packet information");
1601 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1602 seq = ntohs(icp->icmp6_seq);
1605 memcpy(&tpp, icp + 1, sizeof(tpp));
1606 tp.tv_sec = ntohl(tpp.tv32_sec);
1607 tp.tv_nsec = ntohl(tpp.tv32_nsec);
1608 timespecsub(&tv, &tp, &tv);
1609 triptime = ((double)tv.tv_sec) * 1000.0 +
1610 ((double)tv.tv_nsec) / 1000000.0;
1612 tsumsq += triptime * triptime;
1613 if (triptime < tmin)
1615 if (triptime > tmax)
1619 if (TST(seq % mx_dup_ck)) {
1624 SET(seq % mx_dup_ck);
1628 if (options & F_QUIET)
1631 if (options & F_WAITTIME && triptime > waittime) {
1636 if (options & F_FLOOD)
1637 (void)write(STDOUT_FILENO, &BSPACE, 1);
1639 if (options & F_AUDIBLE)
1640 (void)write(STDOUT_FILENO, &BBELL, 1);
1641 (void)printf("%d bytes from %s, icmp_seq=%u", cc,
1642 pr_addr(from, fromlen), seq);
1643 (void)printf(" hlim=%d", hoplim);
1644 if ((options & F_VERBOSE) != 0) {
1645 struct sockaddr_in6 dstsa;
1647 memset(&dstsa, 0, sizeof(dstsa));
1648 dstsa.sin6_family = AF_INET6;
1649 dstsa.sin6_len = sizeof(dstsa);
1650 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1651 dstsa.sin6_addr = pktinfo->ipi6_addr;
1652 (void)printf(" dst=%s",
1653 pr_addr((struct sockaddr *)&dstsa,
1657 (void)printf(" time=%.3f ms", triptime);
1659 (void)printf("(DUP!)");
1660 /* check the data */
1661 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1662 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1663 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1665 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
1670 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1671 memcpy(&seq, ni->icmp6_ni_nonce, sizeof(seq));
1674 if (TST(seq % mx_dup_ck)) {
1679 SET(seq % mx_dup_ck);
1683 if (options & F_QUIET)
1686 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1688 switch (ntohs(ni->ni_code)) {
1689 case ICMP6_NI_SUCCESS:
1691 case ICMP6_NI_REFUSED:
1692 printf("refused, type 0x%x", ntohs(ni->ni_type));
1694 case ICMP6_NI_UNKNOWN:
1695 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1698 printf("unknown code 0x%x, type 0x%x",
1699 ntohs(ni->ni_code), ntohs(ni->ni_type));
1703 switch (ntohs(ni->ni_qtype)) {
1705 printf("NodeInfo NOOP");
1707 case NI_QTYPE_SUPTYPES:
1708 pr_suptypes(ni, end - (u_char *)ni);
1710 case NI_QTYPE_NODEADDR:
1711 pr_nodeaddr(ni, end - (u_char *)ni);
1714 default: /* XXX: for backward compatibility */
1715 cp = (u_char *)ni + ICMP6_NIRLEN;
1716 if (buf[off + ICMP6_NIRLEN] ==
1717 cc - off - ICMP6_NIRLEN - 1)
1722 cp++; /* skip length */
1724 safeputc(*cp & 0xff);
1730 cp = dnsdecode((const u_char *)cp, end,
1731 (const u_char *)(ni + 1), dnsname,
1738 * name-lookup special handling for
1741 if (cp + 1 <= end && !*cp &&
1742 strlen(dnsname) > 0) {
1743 dnsname[strlen(dnsname) - 1] = '\0';
1746 printf("%s%s", i > 0 ? "," : "",
1750 if (options & F_VERBOSE) {
1755 (void)printf(" ("); /*)*/
1757 switch (ni->ni_code) {
1758 case ICMP6_NI_REFUSED:
1759 (void)printf("refused");
1762 case ICMP6_NI_UNKNOWN:
1763 (void)printf("unknown qtype");
1768 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1769 /* case of refusion, unknown */
1774 memcpy(&t, &buf[off+ICMP6ECHOLEN+8], sizeof(t));
1775 ttl = (int32_t)ntohl(t);
1778 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1779 (void)printf("TTL=%d:meaningless",
1783 (void)printf("TTL=%d:invalid",
1786 (void)printf("TTL=%d", ttl);
1796 cp = (u_char *)ni + ICMP6_NIRLEN;
1805 if (buf[off + ICMP6_NIRLEN] !=
1806 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1809 (void)printf("invalid namelen:%d/%lu",
1810 buf[off + ICMP6_NIRLEN],
1811 (u_long)cc - off - ICMP6_NIRLEN - 1);
1821 /* We've got something other than an ECHOREPLY */
1822 if (!(options & F_VERBOSE))
1824 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1828 if (!(options & F_FLOOD)) {
1829 (void)putchar('\n');
1830 if (options & F_VERBOSE)
1832 (void)fflush(stdout);
1838 pr_exthdrs(struct msghdr *mhdr)
1845 bufp = mhdr->msg_control;
1846 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1847 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1848 if (cm->cmsg_level != IPPROTO_IPV6)
1851 bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp);
1854 switch (cm->cmsg_type) {
1856 printf(" HbH Options: ");
1857 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1860 #ifdef IPV6_RTHDRDSTOPTS
1861 case IPV6_RTHDRDSTOPTS:
1863 printf(" Dst Options: ");
1864 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1867 printf(" Routing: ");
1868 pr_rthdr(CMSG_DATA(cm), (size_t)bufsize);
1875 pr_ip6opt(void *extbuf, size_t bufsize)
1877 struct ip6_hbh *ext;
1880 socklen_t extlen, len;
1886 ext = (struct ip6_hbh *)extbuf;
1887 extlen = (ext->ip6h_len + 1) * 8;
1888 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1889 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1892 * Bounds checking on the ancillary data buffer:
1893 * subtract the size of a cmsg structure from the buffer size.
1895 if (bufsize < (extlen + CMSG_SPACE(0))) {
1896 extlen = bufsize - CMSG_SPACE(0);
1897 warnx("options truncated, showing only %u (total=%u)",
1898 (unsigned int)(extlen / 8 - 1),
1899 (unsigned int)(ext->ip6h_len));
1904 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1905 &type, &len, &databuf);
1906 if (currentlen == -1)
1910 * Note that inet6_opt_next automatically skips any padding
1915 offset = inet6_opt_get_val(databuf, offset,
1916 &value4, sizeof(value4));
1917 printf(" Jumbo Payload Opt: Length %u\n",
1918 (u_int32_t)ntohl(value4));
1920 case IP6OPT_ROUTER_ALERT:
1922 offset = inet6_opt_get_val(databuf, offset,
1923 &value2, sizeof(value2));
1924 printf(" Router Alert Opt: Type %u\n",
1928 printf(" Received Opt %u len %lu\n",
1929 type, (unsigned long)len);
1937 pr_rthdr(void *extbuf, size_t bufsize)
1939 struct in6_addr *in6;
1940 char ntopbuf[INET6_ADDRSTRLEN];
1941 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1942 int i, segments, origsegs, rthsize, size0, size1;
1944 /* print fixed part of the header */
1945 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1946 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1947 if ((segments = inet6_rth_segments(extbuf)) >= 0) {
1948 printf("%d segments, ", segments);
1949 printf("%d left\n", rh->ip6r_segleft);
1951 printf("segments unknown, ");
1952 printf("%d left\n", rh->ip6r_segleft);
1957 * Bounds checking on the ancillary data buffer. When calculating
1958 * the number of items to show keep in mind:
1959 * - The size of the cmsg structure
1960 * - The size of one segment (the size of a Type 0 routing header)
1961 * - When dividing add a fudge factor of one in case the
1962 * dividend is not evenly divisible by the divisor
1964 rthsize = (rh->ip6r_len + 1) * 8;
1965 if (bufsize < (rthsize + CMSG_SPACE(0))) {
1966 origsegs = segments;
1967 size0 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 0);
1968 size1 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 1);
1969 segments -= (rthsize - (bufsize - CMSG_SPACE(0))) /
1970 (size1 - size0) + 1;
1971 warnx("segments truncated, showing only %d (total=%d)",
1972 segments, origsegs);
1975 for (i = 0; i < segments; i++) {
1976 in6 = inet6_rth_getaddr(extbuf, i);
1978 printf(" [%d]<NULL>\n", i);
1980 if (!inet_ntop(AF_INET6, in6, ntopbuf,
1982 strlcpy(ntopbuf, "?", sizeof(ntopbuf));
1983 printf(" [%d]%s\n", i, ntopbuf);
1992 pr_bitrange(u_int32_t v, int soff, int ii)
1999 /* shift till we have 0x01 */
2000 if ((v & 0x01) == 0) {
2002 printf("-%u", soff + off - 1);
2013 case 0x04: case 0x0c:
2024 /* we have 0x01 with us */
2025 for (i = 0; i < 32 - off; i++) {
2026 if ((v & (0x01 << i)) == 0)
2030 printf(" %u", soff + off);
2038 pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
2039 /* ni->qtype must be SUPTYPES */
2043 const u_char *cp, *end;
2046 u_int16_t words; /*32bit count*/
2049 #define MAXQTYPES (1 << 16)
2053 cp = (u_char *)(ni + 1);
2054 end = ((u_char *)ni) + nilen;
2058 printf("NodeInfo Supported Qtypes");
2059 if (options & F_VERBOSE) {
2060 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
2061 printf(", compressed bitmap");
2063 printf(", raw bitmap");
2067 clen = (size_t)(end - cp);
2068 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
2069 if (clen == 0 || clen > MAXQTYPES / 8 ||
2075 if (clen < sizeof(cbit) || clen % sizeof(v))
2077 memcpy(&cbit, cp, sizeof(cbit));
2078 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
2082 clen = ntohs(cbit.words) * sizeof(v);
2083 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
2088 for (off = 0; off < clen; off += sizeof(v)) {
2089 memcpy(&v, cp + off, sizeof(v));
2090 v = (u_int32_t)ntohl(v);
2091 b = pr_bitrange(v, (int)(cur + off * 8), b);
2093 /* flush the remaining bits */
2094 b = pr_bitrange(0, (int)(cur + off * 8), b);
2098 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
2099 cur += ntohs(cbit.skip) * 32;
2104 pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
2105 /* ni->qtype must be NODEADDR */
2107 u_char *cp = (u_char *)(ni + 1);
2108 char ntop_buf[INET6_ADDRSTRLEN];
2111 nilen -= sizeof(struct icmp6_nodeinfo);
2113 if (options & F_VERBOSE) {
2114 switch (ni->ni_code) {
2115 case ICMP6_NI_REFUSED:
2116 (void)printf("refused");
2118 case ICMP6_NI_UNKNOWN:
2119 (void)printf("unknown qtype");
2122 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
2123 (void)printf(" truncated");
2127 printf(" no address\n");
2130 * In icmp-name-lookups 05 and later, TTL of each returned address
2131 * is contained in the resposne. We try to detect the version
2132 * by the length of the data, but note that the detection algorithm
2133 * is incomplete. We assume the latest draft by default.
2135 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
2143 memcpy(&t, cp, sizeof(t));
2144 ttl = (u_int32_t)ntohl(t);
2145 cp += sizeof(u_int32_t);
2146 nilen -= sizeof(u_int32_t);
2149 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
2151 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2152 printf(" %s", ntop_buf);
2154 if (ttl == 0xffffffff) {
2156 * XXX: can this convention be applied to all
2157 * type of TTL (i.e. non-ND TTL)?
2159 printf("(TTL=infty)");
2162 printf("(TTL=%u)", ttl);
2166 nilen -= sizeof(struct in6_addr);
2167 cp += sizeof(struct in6_addr);
2172 get_hoplim(struct msghdr *mhdr)
2176 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2177 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2178 if (cm->cmsg_len == 0)
2181 if (cm->cmsg_level == IPPROTO_IPV6 &&
2182 cm->cmsg_type == IPV6_HOPLIMIT &&
2183 cm->cmsg_len == CMSG_LEN(sizeof(int))) {
2186 memcpy(&r, CMSG_DATA(cm), sizeof(r));
2194 static struct in6_pktinfo *
2195 get_rcvpktinfo(struct msghdr *mhdr)
2197 static struct in6_pktinfo pi;
2200 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2201 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2202 if (cm->cmsg_len == 0)
2205 if (cm->cmsg_level == IPPROTO_IPV6 &&
2206 cm->cmsg_type == IPV6_PKTINFO &&
2207 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) {
2208 memcpy(&pi, CMSG_DATA(cm), sizeof(pi));
2217 get_pathmtu(struct msghdr *mhdr)
2219 #ifdef IPV6_RECVPATHMTU
2221 struct ip6_mtuinfo mtuctl;
2223 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2224 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2225 if (cm->cmsg_len == 0)
2228 if (cm->cmsg_level == IPPROTO_IPV6 &&
2229 cm->cmsg_type == IPV6_PATHMTU &&
2230 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2231 memcpy(&mtuctl, CMSG_DATA(cm), sizeof(mtuctl));
2234 * If the notified destination is different from
2235 * the one we are pinging, just ignore the info.
2236 * We check the scope ID only when both notified value
2237 * and our own value have non-0 values, because we may
2238 * have used the default scope zone ID for sending,
2239 * in which case the scope ID value is 0.
2241 if (!IN6_ARE_ADDR_EQUAL(&mtuctl.ip6m_addr.sin6_addr,
2243 (mtuctl.ip6m_addr.sin6_scope_id &&
2244 dst.sin6_scope_id &&
2245 mtuctl.ip6m_addr.sin6_scope_id !=
2246 dst.sin6_scope_id)) {
2247 if ((options & F_VERBOSE) != 0) {
2248 printf("path MTU for %s is notified. "
2250 pr_addr((struct sockaddr *)&mtuctl.ip6m_addr,
2251 sizeof(mtuctl.ip6m_addr)));
2257 * Ignore an invalid MTU. XXX: can we just believe
2260 if (mtuctl.ip6m_mtu < IPV6_MMTU)
2263 /* notification for our destination. return the MTU. */
2264 return((int)mtuctl.ip6m_mtu);
2277 onint(int notused __unused)
2280 * When doing reverse DNS lookups, the seenint flag might not
2281 * be noticed for a while. Just exit if we get a second SIGINT.
2283 if ((options & F_HOSTNAME) && seenint != 0)
2284 _exit(nreceived ? 0 : 2);
2289 * Print out statistics.
2295 (void)printf("\n--- %s ping6 statistics ---\n", hostname);
2296 (void)printf("%ld packets transmitted, ", ntransmitted);
2297 (void)printf("%ld packets received, ", nreceived);
2299 (void)printf("+%ld duplicates, ", nrepeats);
2301 if (nreceived > ntransmitted)
2302 (void)printf("-- somebody's duplicating packets!");
2304 (void)printf("%.1f%% packet loss",
2305 ((((double)ntransmitted - nreceived) * 100.0) /
2309 printf(", %ld packets out of wait time", nrcvtimeout);
2310 (void)putchar('\n');
2311 if (nreceived && timing) {
2312 /* Only display average to microseconds */
2313 double num = nreceived + nrepeats;
2314 double avg = tsum / num;
2315 double dev = sqrt(tsumsq / num - avg * avg);
2317 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2318 tmin, avg, tmax, dev);
2319 (void)fflush(stdout);
2321 (void)fflush(stdout);
2325 static const char *niqcode[] = {
2327 "DNS label", /*or empty*/
2332 static const char *nircode[] = {
2333 "Success", "Refused", "Unknown",
2339 * Print a descriptive string about an ICMP header.
2342 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2344 char ntop_buf[INET6_ADDRSTRLEN];
2345 struct nd_redirect *red;
2346 struct icmp6_nodeinfo *ni;
2347 char dnsname[MAXDNAME + 1];
2351 switch (icp->icmp6_type) {
2352 case ICMP6_DST_UNREACH:
2353 switch (icp->icmp6_code) {
2354 case ICMP6_DST_UNREACH_NOROUTE:
2355 (void)printf("No Route to Destination\n");
2357 case ICMP6_DST_UNREACH_ADMIN:
2358 (void)printf("Destination Administratively "
2361 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2362 (void)printf("Destination Unreachable Beyond Scope\n");
2364 case ICMP6_DST_UNREACH_ADDR:
2365 (void)printf("Destination Host Unreachable\n");
2367 case ICMP6_DST_UNREACH_NOPORT:
2368 (void)printf("Destination Port Unreachable\n");
2371 (void)printf("Destination Unreachable, Bad Code: %d\n",
2375 /* Print returned IP header information */
2376 pr_retip((struct ip6_hdr *)(icp + 1), end);
2378 case ICMP6_PACKET_TOO_BIG:
2379 (void)printf("Packet too big mtu = %d\n",
2380 (int)ntohl(icp->icmp6_mtu));
2381 pr_retip((struct ip6_hdr *)(icp + 1), end);
2383 case ICMP6_TIME_EXCEEDED:
2384 switch (icp->icmp6_code) {
2385 case ICMP6_TIME_EXCEED_TRANSIT:
2386 (void)printf("Time to live exceeded\n");
2388 case ICMP6_TIME_EXCEED_REASSEMBLY:
2389 (void)printf("Frag reassembly time exceeded\n");
2392 (void)printf("Time exceeded, Bad Code: %d\n",
2396 pr_retip((struct ip6_hdr *)(icp + 1), end);
2398 case ICMP6_PARAM_PROB:
2399 (void)printf("Parameter problem: ");
2400 switch (icp->icmp6_code) {
2401 case ICMP6_PARAMPROB_HEADER:
2402 (void)printf("Erroneous Header ");
2404 case ICMP6_PARAMPROB_NEXTHEADER:
2405 (void)printf("Unknown Nextheader ");
2407 case ICMP6_PARAMPROB_OPTION:
2408 (void)printf("Unrecognized Option ");
2411 (void)printf("Bad code(%d) ", icp->icmp6_code);
2414 (void)printf("pointer = 0x%02x\n",
2415 (u_int32_t)ntohl(icp->icmp6_pptr));
2416 pr_retip((struct ip6_hdr *)(icp + 1), end);
2418 case ICMP6_ECHO_REQUEST:
2419 (void)printf("Echo Request");
2420 /* XXX ID + Seq + Data */
2422 case ICMP6_ECHO_REPLY:
2423 (void)printf("Echo Reply");
2424 /* XXX ID + Seq + Data */
2426 case ICMP6_MEMBERSHIP_QUERY:
2427 (void)printf("Listener Query");
2429 case ICMP6_MEMBERSHIP_REPORT:
2430 (void)printf("Listener Report");
2432 case ICMP6_MEMBERSHIP_REDUCTION:
2433 (void)printf("Listener Done");
2435 case ND_ROUTER_SOLICIT:
2436 (void)printf("Router Solicitation");
2438 case ND_ROUTER_ADVERT:
2439 (void)printf("Router Advertisement");
2441 case ND_NEIGHBOR_SOLICIT:
2442 (void)printf("Neighbor Solicitation");
2444 case ND_NEIGHBOR_ADVERT:
2445 (void)printf("Neighbor Advertisement");
2448 red = (struct nd_redirect *)icp;
2449 (void)printf("Redirect\n");
2450 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2452 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2453 (void)printf("Destination: %s", ntop_buf);
2454 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2456 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2457 (void)printf(" New Target: %s", ntop_buf);
2459 case ICMP6_NI_QUERY:
2460 (void)printf("Node Information Query");
2461 /* XXX ID + Seq + Data */
2462 ni = (struct icmp6_nodeinfo *)icp;
2463 l = end - (u_char *)(ni + 1);
2465 switch (ntohs(ni->ni_qtype)) {
2467 (void)printf("NOOP");
2469 case NI_QTYPE_SUPTYPES:
2470 (void)printf("Supported qtypes");
2473 (void)printf("DNS name");
2475 case NI_QTYPE_NODEADDR:
2476 (void)printf("nodeaddr");
2478 case NI_QTYPE_IPV4ADDR:
2479 (void)printf("IPv4 nodeaddr");
2482 (void)printf("unknown qtype");
2485 if (options & F_VERBOSE) {
2486 switch (ni->ni_code) {
2487 case ICMP6_NI_SUBJ_IPV6:
2488 if (l == sizeof(struct in6_addr) &&
2489 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2490 sizeof(ntop_buf)) != NULL) {
2491 (void)printf(", subject=%s(%s)",
2492 niqcode[ni->ni_code], ntop_buf);
2495 /* backward compat to -W */
2496 (void)printf(", oldfqdn");
2498 (void)printf(", invalid");
2502 case ICMP6_NI_SUBJ_FQDN:
2503 if (end == (u_char *)(ni + 1)) {
2504 (void)printf(", no subject");
2507 printf(", subject=%s", niqcode[ni->ni_code]);
2508 cp = (const u_char *)(ni + 1);
2509 cp = dnsdecode(cp, end, NULL, dnsname,
2512 printf("(%s)", dnsname);
2514 printf("(invalid)");
2516 case ICMP6_NI_SUBJ_IPV4:
2517 if (l == sizeof(struct in_addr) &&
2518 inet_ntop(AF_INET, ni + 1, ntop_buf,
2519 sizeof(ntop_buf)) != NULL) {
2520 (void)printf(", subject=%s(%s)",
2521 niqcode[ni->ni_code], ntop_buf);
2523 (void)printf(", invalid");
2526 (void)printf(", invalid");
2531 case ICMP6_NI_REPLY:
2532 (void)printf("Node Information Reply");
2533 /* XXX ID + Seq + Data */
2534 ni = (struct icmp6_nodeinfo *)icp;
2536 switch (ntohs(ni->ni_qtype)) {
2538 (void)printf("NOOP");
2540 case NI_QTYPE_SUPTYPES:
2541 (void)printf("Supported qtypes");
2544 (void)printf("DNS name");
2546 case NI_QTYPE_NODEADDR:
2547 (void)printf("nodeaddr");
2549 case NI_QTYPE_IPV4ADDR:
2550 (void)printf("IPv4 nodeaddr");
2553 (void)printf("unknown qtype");
2556 if (options & F_VERBOSE) {
2557 if (ni->ni_code > nitems(nircode))
2558 printf(", invalid");
2560 printf(", %s", nircode[ni->ni_code]);
2564 (void)printf("Bad ICMP type: %d", icp->icmp6_type);
2570 * Print an IP6 header.
2573 pr_iph(struct ip6_hdr *ip6)
2575 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2577 char ntop_buf[INET6_ADDRSTRLEN];
2579 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2580 tc = (tc >> 4) & 0x0f;
2581 tc |= (ip6->ip6_vfc << 4);
2583 printf("Vr TC Flow Plen Nxt Hlim\n");
2584 printf(" %1x %02x %05x %04x %02x %02x\n",
2585 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2586 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2587 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2588 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2589 printf("%s->", ntop_buf);
2590 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2591 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2592 printf("%s\n", ntop_buf);
2597 * Return an ascii host address as a dotted quad and optionally with
2601 pr_addr(struct sockaddr *addr, int addrlen)
2603 static char buf[NI_MAXHOST];
2606 if ((options & F_HOSTNAME) == 0)
2607 flag |= NI_NUMERICHOST;
2609 if (cap_getnameinfo(capdns, addr, addrlen, buf, sizeof(buf), NULL, 0,
2618 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2621 pr_retip(struct ip6_hdr *ip6, u_char *end)
2623 u_char *cp = (u_char *)ip6, nh;
2626 if ((size_t)(end - (u_char *)ip6) < sizeof(*ip6)) {
2631 hlen = sizeof(*ip6);
2635 while (end - cp >= 8) {
2639 case IPPROTO_HOPOPTS:
2641 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2642 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2644 case IPPROTO_DSTOPTS:
2646 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2647 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2649 case IPPROTO_FRAGMENT:
2651 hlen = sizeof(struct ip6_frag);
2652 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2654 case IPPROTO_ROUTING:
2656 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2657 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2662 memcpy(&ah, cp, sizeof(ah));
2663 hlen = (ah.ah_len+2) << 2;
2667 case IPPROTO_ICMPV6:
2668 printf("ICMP6: type = %d, code = %d\n",
2675 printf("TCP: from port %u, to port %u (decimal)\n",
2676 (*cp * 256 + *(cp + 1)),
2677 (*(cp + 2) * 256 + *(cp + 3)));
2680 printf("UDP: from port %u, to port %u (decimal)\n",
2681 (*cp * 256 + *(cp + 1)),
2682 (*(cp + 2) * 256 + *(cp + 3)));
2685 printf("Unknown Header(%d)\n", nh);
2689 if ((cp += hlen) >= end)
2704 fill(char *bp, char *patp)
2710 for (cp = patp; *cp; cp++)
2712 errx(1, "patterns must be specified as hex digits");
2714 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2715 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2716 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2717 &pat[13], &pat[14], &pat[15]);
2722 (size_t)kk <= MAXDATALEN - 8 + sizeof(struct tv32) + ii;
2724 for (jj = 0; jj < ii; ++jj)
2725 bp[jj + kk] = pat[jj];
2726 if (!(options & F_QUIET)) {
2727 (void)printf("PATTERN: 0x");
2728 for (jj = 0; jj < ii; ++jj)
2729 (void)printf("%02x", bp[jj] & 0xFF);
2735 #ifdef IPSEC_POLICY_IPSEC
2737 setpolicy(int so __unused, char *policy)
2742 return 0; /* ignore */
2744 buf = ipsec_set_policy(policy, strlen(policy));
2746 errx(1, "%s", ipsec_strerror());
2747 if (setsockopt(ssend, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2748 ipsec_get_policylen(buf)) < 0)
2749 warnx("Unable to set IPsec policy");
2758 nigroup(char *name, int nig_oldmcprefix)
2763 u_int8_t digest[16];
2766 char hbuf[NI_MAXHOST];
2767 struct in6_addr in6;
2770 p = strchr(name, '.');
2772 p = name + strlen(name);
2774 if (l > 63 || l > sizeof(hbuf) - 1)
2775 return NULL; /*label too long*/
2776 strncpy(hbuf, name, l);
2777 hbuf[(int)l] = '\0';
2779 for (q = name; *q; q++) {
2780 if (isupper(*(unsigned char *)q))
2781 *q = tolower(*(unsigned char *)q);
2784 /* generate 16 bytes of pseudo-random value. */
2785 memset(&ctxt, 0, sizeof(ctxt));
2788 MD5Update(&ctxt, &c, sizeof(c));
2789 MD5Update(&ctxt, (unsigned char *)name, l);
2790 MD5Final(digest, &ctxt);
2792 if (nig_oldmcprefix) {
2793 /* draft-ietf-ipngwg-icmp-name-lookup */
2794 valid = inet_pton(AF_INET6, "ff02::2:0000:0000", &in6);
2797 valid = inet_pton(AF_INET6, "ff02::2:ff00:0000", &in6);
2800 return NULL; /*XXX*/
2802 if (nig_oldmcprefix) {
2803 /* draft-ietf-ipngwg-icmp-name-lookup */
2804 bcopy(digest, &in6.s6_addr[12], 4);
2807 bcopy(digest, &in6.s6_addr[13], 3);
2810 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2813 return strdup(hbuf);
2819 (void)fprintf(stderr,
2820 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
2825 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
2829 #ifdef IPV6_USE_MIN_MTU
2833 "[-a addrtype] [-b bufsiz] [-c count] [-g gateway]\n"
2834 " [-h hoplimit] [-I interface] [-i wait] [-l preload]"
2835 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
2839 " [-p pattern] [-S sourceaddr] [-s packetsize] "
2841 " [-X timeout] [-z tclass] [hops ...] host\n");
2845 static cap_channel_t *
2848 cap_channel_t *capcas, *capdnsloc;
2850 const char *types[2];
2853 capcas = cap_init();
2855 err(1, "unable to create casper process");
2856 capdnsloc = cap_service_open(capcas, "system.dns");
2857 /* Casper capability no longer needed. */
2859 if (capdnsloc == NULL)
2860 err(1, "unable to open system.dns service");
2862 types[0] = "NAME2ADDR";
2863 types[1] = "ADDR2NAME";
2864 if (cap_dns_type_limit(capdnsloc, types, nitems(types)) < 0)
2865 err(1, "unable to limit access to system.dns service");
2866 families[0] = AF_INET6;
2867 if (cap_dns_family_limit(capdnsloc, families, nitems(families)) < 0)
2868 err(1, "unable to limit access to system.dns service");