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The result of the "RFC3542 support" SoC project by Dashu Huang.
[dragonfly.git] / sbin / ping6 / ping6.c
blob058ae56deddde4a08b4e1a53633d04be277e0b27
1 /* $KAME: ping6.c,v 1.126 2001/05/17 03:39:08 itojun Exp $ */
2
3 /*
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved.
32 * @(#)ping.c 8.1 (Berkeley) 6/5/93
33 * $FreeBSD: src/sbin/ping6/ping6.c,v 1.4.2.10 2002/12/09 03:04:44 suz Exp $
34 * $DragonFly: src/sbin/ping6/ping6.c,v 1.9 2008/09/04 09:08:22 hasso Exp $
35 */
36
37 /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */
38
39 /*
40 * Copyright (c) 1989, 1993
41 * The Regents of the University of California. All rights reserved.
42 *
43 * This code is derived from software contributed to Berkeley by
44 * Mike Muuss.
45 *
46 * Redistribution and use in source and binary forms, with or without
47 * modification, are permitted provided that the following conditions
48 * are met:
49 * 1. Redistributions of source code must retain the above copyright
50 * notice, this list of conditions and the following disclaimer.
51 * 2. Redistributions in binary form must reproduce the above copyright
52 * notice, this list of conditions and the following disclaimer in the
53 * documentation and/or other materials provided with the distribution.
54 * 3. All advertising materials mentioning features or use of this software
55 * must display the following acknowledgement:
56 * This product includes software developed by the University of
57 * California, Berkeley and its contributors.
58 * 4. Neither the name of the University nor the names of its contributors
59 * may be used to endorse or promote products derived from this software
60 * without specific prior written permission.
61 *
62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
72 * SUCH DAMAGE.
73 */
74
75 /*
76 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
77 * measure round-trip-delays and packet loss across network paths.
78 *
79 * Author -
80 * Mike Muuss
81 * U. S. Army Ballistic Research Laboratory
82 * December, 1983
83 *
84 * Status -
85 * Public Domain. Distribution Unlimited.
86 * Bugs -
87 * More statistics could always be gathered.
88 * This program has to run SUID to ROOT to access the ICMP socket.
89 */
90 /*
91 * NOTE:
92 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
93 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
94 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
95 * network attached to 1 or more interfaces)
96 */
97
98 #include <sys/param.h>
99 #include <sys/uio.h>
100 #include <sys/socket.h>
101 #include <sys/time.h>
102
103 #include <net/if.h>
104 #include <net/route.h>
105
106 #include <netinet/in.h>
107 #include <netinet/ip6.h>
108 #include <netinet/icmp6.h>
109 #include <arpa/inet.h>
110 #include <arpa/nameser.h>
111 #include <netdb.h>
112
113 #include <ctype.h>
114 #include <err.h>
115 #include <errno.h>
116 #include <fcntl.h>
117 #include <math.h>
118 #include <signal.h>
119 #include <stdio.h>
120 #include <stdlib.h>
121 #include <string.h>
122 #include <unistd.h>
123
124 #ifdef IPSEC
125 #include <netinet6/ah.h>
126 #include <netinet6/ipsec.h>
127 #endif
128
129 #include <md5.h>
130
131 #define MAXPACKETLEN 131072
132 #define IP6LEN 40
133 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
134 #define ICMP6ECHOTMLEN sizeof(struct timeval)
135 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
136 /* FQDN case, 64 bits of nonce + 32 bits ttl */
137 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
138 #define EXTRA 256 /* for AH and various other headers. weird. */
139 #define DEFDATALEN ICMP6ECHOTMLEN
140 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
141 #define NROUTES 9 /* number of record route slots */
142
143 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
144 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
145 #define SET(bit) (A(bit) |= B(bit))
146 #define CLR(bit) (A(bit) &= (~B(bit)))
147 #define TST(bit) (A(bit) & B(bit))
148
149 #define F_FLOOD 0x0001
150 #define F_INTERVAL 0x0002
151 #define F_PINGFILLED 0x0008
152 #define F_QUIET 0x0010
153 #define F_RROUTE 0x0020
154 #define F_SO_DEBUG 0x0040
155 #define F_VERBOSE 0x0100
156 #ifdef IPSEC
157 #ifdef IPSEC_POLICY_IPSEC
158 #define F_POLICY 0x0400
159 #else
160 #define F_AUTHHDR 0x0200
161 #define F_ENCRYPT 0x0400
162 #endif /*IPSEC_POLICY_IPSEC*/
163 #endif /*IPSEC*/
164 #define F_NODEADDR 0x0800
165 #define F_FQDN 0x1000
166 #define F_INTERFACE 0x2000
167 #define F_SRCADDR 0x4000
168 #ifdef IPV6_REACHCONF
169 #define F_REACHCONF 0x8000
170 #endif
171 #define F_HOSTNAME 0x10000
172 #define F_FQDNOLD 0x20000
173 #define F_NIGROUP 0x40000
174 #define F_SUPTYPES 0x80000
175 #define F_NOMINMTU 0x100000
176 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
177 u_int options;
178
179 #define IN6LEN sizeof(struct in6_addr)
180 #define SA6LEN sizeof(struct sockaddr_in6)
181 #define DUMMY_PORT 10101
182
183 #define SIN6(s) ((struct sockaddr_in6 *)(s))
184
185 /*
186 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
187 * number of received sequence numbers we can keep track of. Change 128
188 * to 8192 for complete accuracy...
189 */
190 #define MAX_DUP_CHK (8 * 8192)
191 int mx_dup_ck = MAX_DUP_CHK;
192 char rcvd_tbl[MAX_DUP_CHK / 8];
193
194 struct addrinfo *res;
195 struct sockaddr_in6 dst; /* who to ping6 */
196 struct sockaddr_in6 src; /* src addr of this packet */
197 int datalen = DEFDATALEN;
198 int s; /* socket file descriptor */
199 u_char outpack[MAXPACKETLEN];
200 char BSPACE = '\b'; /* characters written for flood */
201 char DOT = '.';
202 char *hostname;
203 int ident; /* process id to identify our packets */
204 u_int8_t nonce[8]; /* nonce field for node information */
205 struct in6_addr srcaddr;
206 int hoplimit = -1; /* hoplimit */
207 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
208
209 /* counters */
210 long npackets; /* max packets to transmit */
211 long nreceived; /* # of packets we got back */
212 long nrepeats; /* number of duplicates */
213 long ntransmitted; /* sequence # for outbound packets = #sent */
214 struct timeval interval = {1, 0}; /* interval between packets */
215
216 /* timing */
217 int timing; /* flag to do timing */
218 double tmin = 999999999.0; /* minimum round trip time */
219 double tmax = 0.0; /* maximum round trip time */
220 double tsum = 0.0; /* sum of all times, for doing average */
221 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
222
223 /* for node addresses */
224 u_short naflags;
225
226 /* for ancillary data(advanced API) */
227 struct msghdr smsghdr;
228 struct iovec smsgiov;
229 char *scmsg = 0;
230
231 volatile int signo;
232 volatile sig_atomic_t seenalrm;
233 volatile sig_atomic_t seenint;
234 #ifdef SIGINFO
235 volatile sig_atomic_t seeninfo;
236 #endif
237
238 int main(int, char *[]);
239 void fill(char *, char *);
240 int get_hoplim(struct msghdr *);
241
242 #ifdef IPV6_RECVPATHMTU
243 int get_pathmtu(struct msghdr *);
244 #else
245 #define get_pathmtu(mhdr) (0)
246 #endif
247
248 #ifdef IPV6_USE_MTU
249 void set_pathmtu(int);
250 #else
251 #define set_pathmtu(mtu)
252 #endif
253
254 struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
255 void onsignal(int);
256 void retransmit(void);
257 void onint(int);
258 size_t pingerlen(void);
259 int pinger(void);
260 const char *pr_addr(struct sockaddr *, int);
261 void pr_icmph(struct icmp6_hdr *, u_char *);
262 void pr_iph(struct ip6_hdr *);
263 void pr_suptypes(struct icmp6_nodeinfo *, size_t);
264 void pr_nodeaddr(struct icmp6_nodeinfo *, int);
265 int myechoreply(const struct icmp6_hdr *);
266 int mynireply(const struct icmp6_nodeinfo *);
267 char *dnsdecode(const u_char **, const u_char *, const u_char *,
268 u_char *, size_t);
269 void pr_pack(u_char *, int, struct msghdr *);
270 void pr_exthdrs(struct msghdr *);
271 void pr_ip6opt(void *);
272 void pr_rthdr(void *);
273 int pr_bitrange(u_int32_t, int, int);
274 void pr_retip(struct ip6_hdr *, u_char *);
275 void summary(void);
276 void tvsub(struct timeval *, struct timeval *);
277 int setpolicy(int, char *);
278 char *nigroup(char *);
279 void usage(void);
280
281 int
282 main(int argc, char **argv)
283 {
284 struct itimerval itimer;
285 struct sockaddr_in6 from;
286 struct timeval timeout, *tv;
287 struct addrinfo hints;
288 fd_set *fdmaskp;
289 int fdmasks;
290 int cc, i;
291 int ch, fromlen, hold, packlen, preload, optval, ret_ga;
292 u_char *datap, *packet;
293 char *e, *target, *ifname = NULL;
294 int ip6optlen = 0;
295 struct cmsghdr *scmsgp = NULL;
296 int sockbufsize = 0;
297 int usepktinfo = 0;
298 struct in6_pktinfo *pktinfo = NULL;
299 #ifdef USE_RFC3542
300 struct ip6_rthdr *rthdr = NULL;
301 #endif
302 #ifdef IPSEC_POLICY_IPSEC
303 char *policy_in = NULL;
304 char *policy_out = NULL;
305 #endif
306 #ifdef IPV6_USE_MIN_MTU
307 int mflag = 0;
308 #endif
309 double intval;
310
311 /* just to be sure */
312 memset(&smsghdr, 0, sizeof(smsghdr));
313 memset(&smsgiov, 0, sizeof(smsgiov));
314
315 preload = 0;
316 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
317 #ifndef IPSEC
318 #define ADDOPTS
319 #else
320 #ifdef IPSEC_POLICY_IPSEC
321 #define ADDOPTS "P:"
322 #else
323 #define ADDOPTS "AE"
324 #endif /*IPSEC_POLICY_IPSEC*/
325 #endif
326 while ((ch = getopt(argc, argv,
327 "a:b:c:dfHh:I:i:l:mnNp:qRS:s:tvwW" ADDOPTS)) != -1) {
328 #undef ADDOPTS
329 switch (ch) {
330 case 'a':
331 {
332 char *cp;
333
334 options &= ~F_NOUSERDATA;
335 options |= F_NODEADDR;
336 for (cp = optarg; *cp != '\0'; cp++) {
337 switch (*cp) {
338 case 'a':
339 naflags |= NI_NODEADDR_FLAG_ALL;
340 break;
341 case 'c':
342 case 'C':
343 naflags |= NI_NODEADDR_FLAG_COMPAT;
344 break;
345 case 'l':
346 case 'L':
347 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
348 break;
349 case 's':
350 case 'S':
351 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
352 break;
353 case 'g':
354 case 'G':
355 naflags |= NI_NODEADDR_FLAG_GLOBAL;
356 break;
357 case 'A': /* experimental. not in the spec */
358 #ifdef NI_NODEADDR_FLAG_ANYCAST
359 naflags |= NI_NODEADDR_FLAG_ANYCAST;
360 break;
361 #else
362 errx(1,
363 "-a A is not supported on the platform");
364 /*NOTREACHED*/
365 #endif
366 default:
367 usage();
368 /*NOTREACHED*/
369 }
370 }
371 break;
372 }
373 case 'b':
374 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
375 sockbufsize = atoi(optarg);
376 #else
377 err(1,
378 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
379 #endif
380 break;
381 case 'c':
382 npackets = strtol(optarg, &e, 10);
383 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
384 errx(1,
385 "illegal number of packets -- %s", optarg);
386 break;
387 case 'd':
388 options |= F_SO_DEBUG;
389 break;
390 case 'f':
391 if (getuid()) {
392 errno = EPERM;
393 errx(1, "Must be superuser to flood ping");
394 }
395 options |= F_FLOOD;
396 setbuf(stdout, (char *)NULL);
397 break;
398 case 'H':
399 options |= F_HOSTNAME;
400 break;
401 case 'h': /* hoplimit */
402 hoplimit = strtol(optarg, &e, 10);
403 if (255 < hoplimit || hoplimit < -1)
404 errx(1,
405 "illegal hoplimit -- %s", optarg);
406 break;
407 case 'I':
408 ifname = optarg;
409 options |= F_INTERFACE;
410 #ifndef USE_SIN6_SCOPE_ID
411 usepktinfo++;
412 #endif
413 break;
414 case 'i': /* wait between sending packets */
415 intval = strtod(optarg, &e);
416 if (*optarg == '\0' || *e != '\0')
417 errx(1, "illegal timing interval %s", optarg);
418 if (intval < 1 && getuid()) {
419 errx(1, "%s: only root may use interval < 1s",
420 strerror(EPERM));
421 }
422 interval.tv_sec = (long)intval;
423 interval.tv_usec =
424 (long)((intval - interval.tv_sec) * 1000000);
425 if (interval.tv_sec < 0)
426 errx(1, "illegal timing interval %s", optarg);
427 /* less than 1/hz does not make sense */
428 if (interval.tv_sec == 0 && interval.tv_usec < 10000) {
429 warnx("too small interval, raised to 0.01");
430 interval.tv_usec = 10000;
431 }
432 options |= F_INTERVAL;
433 break;
434 case 'l':
435 if (getuid()) {
436 errno = EPERM;
437 errx(1, "Must be superuser to preload");
438 }
439 preload = strtol(optarg, &e, 10);
440 if (preload < 0 || *optarg == '\0' || *e != '\0')
441 errx(1, "illegal preload value -- %s", optarg);
442 break;
443 case 'm':
444 #ifdef IPV6_USE_MIN_MTU
445 mflag++;
446 break;
447 #else
448 errx(1, "-%c is not supported on this platform", ch);
449 /*NOTREACHED*/
450 #endif
451 case 'n':
452 options &= ~F_HOSTNAME;
453 break;
454 case 'N':
455 options |= F_NIGROUP;
456 break;
457 case 'p': /* fill buffer with user pattern */
458 options |= F_PINGFILLED;
459 fill((char *)datap, optarg);
460 break;
461 case 'q':
462 options |= F_QUIET;
463 break;
464 case 'R':
465 #ifdef IPV6_REACHCONF
466 options |= F_REACHCONF;
467 break;
468 #else
469 errx(1, "-R is not supported in this configuration");
470 #endif
471 case 'S':
472 /* XXX: use getaddrinfo? */
473 if (inet_pton(AF_INET6, optarg, (void *)&srcaddr) != 1)
474 errx(1, "invalid IPv6 address: %s", optarg);
475 options |= F_SRCADDR;
476 usepktinfo++;
477 break;
478 case 's': /* size of packet to send */
479 datalen = strtol(optarg, &e, 10);
480 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
481 errx(1, "illegal datalen value -- %s", optarg);
482 if (datalen > MAXDATALEN) {
483 errx(1,
484 "datalen value too large, maximum is %d",
485 MAXDATALEN);
486 }
487 break;
488 case 't':
489 options &= ~F_NOUSERDATA;
490 options |= F_SUPTYPES;
491 break;
492 case 'v':
493 options |= F_VERBOSE;
494 break;
495 case 'w':
496 options &= ~F_NOUSERDATA;
497 options |= F_FQDN;
498 break;
499 case 'W':
500 options &= ~F_NOUSERDATA;
501 options |= F_FQDNOLD;
502 break;
503 #ifdef IPSEC
504 #ifdef IPSEC_POLICY_IPSEC
505 case 'P':
506 options |= F_POLICY;
507 if (!strncmp("in", optarg, 2)) {
508 if ((policy_in = strdup(optarg)) == NULL)
509 errx(1, "strdup");
510 } else if (!strncmp("out", optarg, 3)) {
511 if ((policy_out = strdup(optarg)) == NULL)
512 errx(1, "strdup");
513 } else
514 errx(1, "invalid security policy");
515 break;
516 #else
517 case 'A':
518 options |= F_AUTHHDR;
519 break;
520 case 'E':
521 options |= F_ENCRYPT;
522 break;
523 #endif /*IPSEC_POLICY_IPSEC*/
524 #endif /*IPSEC*/
525 default:
526 usage();
527 /*NOTREACHED*/
528 }
529 }
530 argc -= optind;
531 argv += optind;
532
533 if (argc < 1) {
534 usage();
535 /*NOTREACHED*/
536 }
537 if (argc > 1) {
538 errx(1, "too many arguments");
539 /*NOTREACHED*/
540 }
541
542 if (options & F_NIGROUP) {
543 target = nigroup(argv[argc - 1]);
544 if (target == NULL) {
545 usage();
546 /*NOTREACHED*/
547 }
548 } else
549 target = argv[argc - 1];
550
551 /* getaddrinfo */
552 bzero(&hints, sizeof(struct addrinfo));
553 hints.ai_flags = AI_CANONNAME;
554 hints.ai_family = AF_INET6;
555 hints.ai_socktype = SOCK_RAW;
556 hints.ai_protocol = IPPROTO_ICMPV6;
557
558 ret_ga = getaddrinfo(target, NULL, &hints, &res);
559 if (ret_ga) {
560 fprintf(stderr, "ping6: %s\n", gai_strerror(ret_ga));
561 exit(1);
562 }
563 if (res->ai_canonname)
564 hostname = res->ai_canonname;
565 else
566 hostname = target;
567
568 if (!res->ai_addr)
569 errx(1, "getaddrinfo failed");
570
571 memcpy(&dst, res->ai_addr, res->ai_addrlen);
572
573 if ((s = socket(res->ai_family, res->ai_socktype,
574 res->ai_protocol)) < 0)
575 err(1, "socket");
576
577 /*
578 * let the kerel pass extension headers of incoming packets,
579 * for privileged socket options
580 */
581 if ((options & F_VERBOSE) != 0) {
582 int opton = 1;
583
584 #ifdef IPV6_RECVHOPOPTS
585 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
586 sizeof(opton)))
587 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
588 #else /* old adv. API */
589 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
590 sizeof(opton)))
591 err(1, "setsockopt(IPV6_HOPOPTS)");
592 #endif
593 #ifdef IPV6_RECVDSTOPTS
594 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
595 sizeof(opton)))
596 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
597 #else /* old adv. API */
598 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
599 sizeof(opton)))
600 err(1, "setsockopt(IPV6_DSTOPTS)");
601 #endif
602 #ifdef IPV6_RECVRTHDRDSTOPTS
603 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
604 sizeof(opton)))
605 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
606 #endif
607 }
608
609 /* revoke root privilege */
610 seteuid(getuid());
611 setuid(getuid());
612
613 if (options & F_FLOOD && options & F_INTERVAL)
614 errx(1, "-f and -i incompatible options");
615
616 if ((options & F_NOUSERDATA) == 0) {
617 if (datalen >= (int)sizeof(struct timeval)) {
618 /* we can time transfer */
619 timing = 1;
620 } else
621 timing = 0;
622 /* in F_VERBOSE case, we may get non-echoreply packets*/
623 if (options & F_VERBOSE)
624 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
625 else
626 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
627 } else {
628 /* suppress timing for node information query */
629 timing = 0;
630 datalen = 2048;
631 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
632 }
633
634 if (!(packet = (u_char *)malloc((u_int)packlen)))
635 err(1, "Unable to allocate packet");
636 if (!(options & F_PINGFILLED))
637 for (i = ICMP6ECHOLEN; i < packlen; ++i)
638 *datap++ = i;
639
640 ident = getpid() & 0xFFFF;
641 #ifndef __OpenBSD__
642 gettimeofday(&timeout, NULL);
643 srand((unsigned int)(timeout.tv_sec ^ timeout.tv_usec ^ (long)ident));
644 memset(nonce, 0, sizeof(nonce));
645 for (i = 0; i < (int)sizeof(nonce); i += sizeof(int))
646 *((int *)&nonce[i]) = rand();
647 #else
648 memset(nonce, 0, sizeof(nonce));
649 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
650 *((u_int32_t *)&nonce[i]) = arc4random();
651 #endif
652
653 hold = 1;
654
655 if (options & F_SO_DEBUG)
656 setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
657 sizeof(hold));
658 optval = IPV6_DEFHLIM;
659 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
660 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
661 &optval, sizeof(optval)) == -1)
662 err(1, "IPV6_MULTICAST_HOPS");
663 #ifdef IPV6_USE_MIN_MTU
664 if (mflag != 1) {
665 optval = mflag > 1 ? 0 : 1;
666 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
667 &optval, sizeof(optval)) == -1)
668 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
669 }
670 #ifdef IPV6_RECVPATHMTU
671 else {
672 optval = 1;
673 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
674 &optval, sizeof(optval)) == -1)
675 err(1, "setsockopt(IPV6_RECVPATHMTU)");
676 }
677 #endif /* IPV6_RECVPATHMTU */
678 #endif /* IPV6_USE_MIN_MTU */
679
680 #ifdef IPSEC
681 #ifdef IPSEC_POLICY_IPSEC
682 if (options & F_POLICY) {
683 if (setpolicy(s, policy_in) < 0)
684 errx(1, "%s", ipsec_strerror());
685 if (setpolicy(s, policy_out) < 0)
686 errx(1, "%s", ipsec_strerror());
687 }
688 #else
689 if (options & F_AUTHHDR) {
690 optval = IPSEC_LEVEL_REQUIRE;
691 #ifdef IPV6_AUTH_TRANS_LEVEL
692 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
693 &optval, sizeof(optval)) == -1)
694 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
695 #else /* old def */
696 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
697 &optval, sizeof(optval)) == -1)
698 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
699 #endif
700 }
701 if (options & F_ENCRYPT) {
702 optval = IPSEC_LEVEL_REQUIRE;
703 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
704 &optval, sizeof(optval)) == -1)
705 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
706 }
707 #endif /*IPSEC_POLICY_IPSEC*/
708 #endif
709
710 #ifdef ICMP6_FILTER
711 {
712 struct icmp6_filter filt;
713 if (!(options & F_VERBOSE)) {
714 ICMP6_FILTER_SETBLOCKALL(&filt);
715 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
716 (options & F_NODEADDR) || (options & F_SUPTYPES))
717 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
718 else
719 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
720 } else {
721 ICMP6_FILTER_SETPASSALL(&filt);
722 }
723 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
724 sizeof(filt)) < 0)
725 err(1, "setsockopt(ICMP6_FILTER)");
726 }
727 #endif /*ICMP6_FILTER*/
728
729 /* let the kerel pass extension headers of incoming packets */
730 if ((options & F_VERBOSE) != 0) {
731 int opton = 1;
732
733 #ifdef IPV6_RECVRTHDR
734 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
735 sizeof(opton)))
736 err(1, "setsockopt(IPV6_RECVRTHDR)");
737 #else /* old adv. API */
738 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
739 sizeof(opton)))
740 err(1, "setsockopt(IPV6_RTHDR)");
741 #endif
742 }
743
744 /*
745 optval = 1;
746 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
747 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
748 &optval, sizeof(optval)) == -1)
749 err(1, "IPV6_MULTICAST_LOOP");
750 */
751
752 /* Specify the outgoing interface and/or the source address */
753 if (usepktinfo)
754 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
755
756 if (hoplimit != -1)
757 ip6optlen += CMSG_SPACE(sizeof(int));
758
759 #ifdef IPV6_REACHCONF
760 if (options & F_REACHCONF)
761 ip6optlen += CMSG_SPACE(0);
762 #endif
763
764 /* set IP6 packet options */
765 if (ip6optlen) {
766 if ((scmsg = (char *)malloc(ip6optlen)) == 0)
767 errx(1, "can't allocate enough memory");
768 smsghdr.msg_control = (caddr_t)scmsg;
769 smsghdr.msg_controllen = ip6optlen;
770 scmsgp = (struct cmsghdr *)scmsg;
771 }
772 if (usepktinfo) {
773 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
774 memset(pktinfo, 0, sizeof(*pktinfo));
775 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
776 scmsgp->cmsg_level = IPPROTO_IPV6;
777 scmsgp->cmsg_type = IPV6_PKTINFO;
778 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
779 }
780
781 /* set the outgoing interface */
782 if (ifname) {
783 #ifndef USE_SIN6_SCOPE_ID
784 /* pktinfo must have already been allocated */
785 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
786 errx(1, "%s: invalid interface name", ifname);
787 #else
788 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
789 errx(1, "%s: invalid interface name", ifname);
790 #endif
791 }
792 /* set the source address */
793 if (options & F_SRCADDR)/* pktinfo must be valid */
794 pktinfo->ipi6_addr = srcaddr;
795
796 if (hoplimit != -1) {
797 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
798 scmsgp->cmsg_level = IPPROTO_IPV6;
799 scmsgp->cmsg_type = IPV6_HOPLIMIT;
800 *(int *)(CMSG_DATA(scmsgp)) = hoplimit;
801
802 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
803 }
804 #ifdef IPV6_REACHCONF
805 if (options & F_REACHCONF) {
806 scmsgp->cmsg_len = CMSG_LEN(0);
807 scmsgp->cmsg_level = IPPROTO_IPV6;
808 scmsgp->cmsg_type = IPV6_REACHCONF;
809
810 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
811 }
812 #endif
813 {
814 /*
815 * source selection
816 */
817 int dummy, len = sizeof(src);
818
819 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
820 err(1, "UDP socket");
821
822 src.sin6_family = AF_INET6;
823 src.sin6_addr = dst.sin6_addr;
824 src.sin6_port = ntohs(DUMMY_PORT);
825 src.sin6_scope_id = dst.sin6_scope_id;
826
827 #ifdef USE_RFC3542
828 if (pktinfo &&
829 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
830 (void *)pktinfo, sizeof(*pktinfo)))
831 err(1, "UDP setsockopt(IPV6_PKTINFO)");
832 if (hoplimit != -1 &&
833 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
834 (void *)&hoplimit, sizeof(hoplimit)))
835 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
836 if (hoplimit != -1 &&
837 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
838 (void *)&hoplimit, sizeof(hoplimit)))
839 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
840 if (rthdr &&
841 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
842 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
843 err(1, "UDP setsockopt(IPV6_RTHDR)");
844 #else /* old advanced API */
845 if (smsghdr.msg_control &&
846 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS,
847 (void *)smsghdr.msg_control, smsghdr.msg_controllen))
848 err(1, "UDP setsockopt(IPV6_PKTOPTIONS)");
849 #endif
850
851 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
852 err(1, "UDP connect");
853
854 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
855 err(1, "getsockname");
856
857 close(dummy);
858 }
859
860 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
861 if (sockbufsize) {
862 if (datalen > sockbufsize)
863 warnx("you need -b to increase socket buffer size");
864 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
865 sizeof(sockbufsize)) < 0)
866 err(1, "setsockopt(SO_SNDBUF)");
867 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
868 sizeof(sockbufsize)) < 0)
869 err(1, "setsockopt(SO_RCVBUF)");
870 }
871 else {
872 if (datalen > 8 * 1024) /*XXX*/
873 warnx("you need -b to increase socket buffer size");
874 /*
875 * When pinging the broadcast address, you can get a lot of
876 * answers. Doing something so evil is useful if you are trying
877 * to stress the ethernet, or just want to fill the arp cache
878 * to get some stuff for /etc/ethers.
879 */
880 hold = 48 * 1024;
881 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
882 sizeof(hold));
883 }
884 #endif
885
886 optval = 1;
887 #ifndef USE_SIN6_SCOPE_ID
888 #ifdef IPV6_RECVPKTINFO
889 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
890 sizeof(optval)) < 0)
891 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
892 #else /* old adv. API */
893 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
894 sizeof(optval)) < 0)
895 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
896 #endif
897 #endif /* USE_SIN6_SCOPE_ID */
898 #ifdef IPV6_RECVHOPLIMIT
899 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
900 sizeof(optval)) < 0)
901 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
902 #else /* old adv. API */
903 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
904 sizeof(optval)) < 0)
905 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
906 #endif
907
908 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
909 (unsigned long)(pingerlen() - 8));
910 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
911 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
912
913 while (preload--) /* Fire off them quickies. */
914 pinger();
915
916 signal(SIGINT, onsignal);
917 #ifdef SIGINFO
918 signal(SIGINFO, onsignal);
919 #endif
920
921 if ((options & F_FLOOD) == 0) {
922 signal(SIGALRM, onsignal);
923 itimer.it_interval = interval;
924 itimer.it_value = interval;
925 setitimer(ITIMER_REAL, &itimer, NULL);
926 if (ntransmitted == 0)
927 retransmit();
928 }
929
930 fdmasks = howmany(s + 1, NFDBITS) * sizeof(fd_mask);
931 if ((fdmaskp = malloc(fdmasks)) == NULL)
932 err(1, "malloc");
933
934 signo = seenalrm = seenint = 0;
935 #ifdef SIGINFO
936 seeninfo = 0;
937 #endif
938
939 for (;;) {
940 struct msghdr m;
941 struct cmsghdr *cm;
942 u_char buf[1024];
943 struct iovec iov[2];
944
945 /* signal handling */
946 if (seenalrm) {
947 retransmit();
948 seenalrm = 0;
949 continue;
950 }
951 if (seenint) {
952 onint(SIGINT);
953 seenint = 0;
954 continue;
955 }
956 #ifdef SIGINFO
957 if (seeninfo) {
958 summary();
959 seeninfo = 0;
960 continue;
961 }
962 #endif
963
964 if (options & F_FLOOD) {
965 pinger();
966 timeout.tv_sec = 0;
967 timeout.tv_usec = 10000;
968 tv = &timeout;
969 } else
970 tv = NULL;
971 memset(fdmaskp, 0, fdmasks);
972 FD_SET(s, fdmaskp);
973 cc = select(s + 1, fdmaskp, NULL, NULL, tv);
974 if (cc < 0) {
975 if (errno != EINTR) {
976 warn("select");
977 sleep(1);
978 }
979 continue;
980 } else if (cc == 0)
981 continue;
982
983 fromlen = sizeof(from);
984 m.msg_name = (caddr_t)&from;
985 m.msg_namelen = sizeof(from);
986 memset(&iov, 0, sizeof(iov));
987 iov[0].iov_base = (caddr_t)packet;
988 iov[0].iov_len = packlen;
989 m.msg_iov = iov;
990 m.msg_iovlen = 1;
991 cm = (struct cmsghdr *)buf;
992 m.msg_control = (caddr_t)buf;
993 m.msg_controllen = sizeof(buf);
994
995 cc = recvmsg(s, &m, 0);
996 if (cc < 0) {
997 if (errno != EINTR) {
998 warn("recvmsg");
999 sleep(1);
1000 }
1001 continue;
1002 } else if (cc == 0) {
1003 int mtu;
1004
1005 /*
1006 * receive control messages only. Process the
1007 * exceptions (currently the only possiblity is
1008 * a path MTU notification.)
1009 */
1010 if ((mtu = get_pathmtu(&m)) > 0) {
1011 if ((options & F_VERBOSE) != 0) {
1012 printf("new path MTU (%d) is "
1013 "notified\n", mtu);
1014 }
1015 set_pathmtu(mtu);
1016 }
1017 continue;
1018 } else {
1019 /*
1020 * an ICMPv6 message (probably an echoreply) arrived.
1021 */
1022 pr_pack(packet, cc, &m);
1023 }
1024 if (npackets && nreceived >= npackets)
1025 break;
1026 }
1027 summary();
1028 exit(nreceived == 0);
1029 }
1030
1031 void
1032 onsignal(int sig)
1033 {
1034 signo = sig;
1035 switch (sig) {
1036 case SIGALRM:
1037 seenalrm++;
1038 break;
1039 case SIGINT:
1040 seenint++;
1041 break;
1042 #ifdef SIGINFO
1043 case SIGINFO:
1044 seeninfo++;
1045 break;
1046 #endif
1047 }
1048 }
1049
1050 /*
1051 * retransmit --
1052 * This routine transmits another ping6.
1053 */
1054 void
1055 retransmit(void)
1056 {
1057 struct itimerval itimer;
1058
1059 if (pinger() == 0)
1060 return;
1061
1062 /*
1063 * If we're not transmitting any more packets, change the timer
1064 * to wait two round-trip times if we've received any packets or
1065 * ten seconds if we haven't.
1066 */
1067 #define MAXWAIT 10
1068 if (nreceived) {
1069 itimer.it_value.tv_sec = 2 * tmax / 1000;
1070 if (itimer.it_value.tv_sec == 0)
1071 itimer.it_value.tv_sec = 1;
1072 } else
1073 itimer.it_value.tv_sec = MAXWAIT;
1074 itimer.it_interval.tv_sec = 0;
1075 itimer.it_interval.tv_usec = 0;
1076 itimer.it_value.tv_usec = 0;
1077
1078 signal(SIGALRM, onint);
1079 setitimer(ITIMER_REAL, &itimer, NULL);
1080 }
1081
1082 /*
1083 * pinger --
1084 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1085 * will be added on by the kernel. The ID field is our UNIX process ID,
1086 * and the sequence number is an ascending integer. The first 8 bytes
1087 * of the data portion are used to hold a UNIX "timeval" struct in VAX
1088 * byte-order, to compute the round-trip time.
1089 */
1090 size_t
1091 pingerlen(void)
1092 {
1093 size_t l;
1094
1095 if (options & F_FQDN)
1096 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1097 else if (options & F_FQDNOLD)
1098 l = ICMP6_NIQLEN;
1099 else if (options & F_NODEADDR)
1100 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1101 else if (options & F_SUPTYPES)
1102 l = ICMP6_NIQLEN;
1103 else
1104 l = ICMP6ECHOLEN + datalen;
1105
1106 return l;
1107 }
1108
1109 int
1110 pinger(void)
1111 {
1112 struct icmp6_hdr *icp;
1113 struct iovec iov[2];
1114 int i, cc;
1115 struct icmp6_nodeinfo *nip;
1116 int seq;
1117
1118 if (npackets && ntransmitted >= npackets)
1119 return(-1); /* no more transmission */
1120
1121 icp = (struct icmp6_hdr *)outpack;
1122 nip = (struct icmp6_nodeinfo *)outpack;
1123 memset(icp, 0, sizeof(*icp));
1124 icp->icmp6_cksum = 0;
1125 seq = ntransmitted++;
1126 CLR(seq % mx_dup_ck);
1127
1128 if (options & F_FQDN) {
1129 icp->icmp6_type = ICMP6_NI_QUERY;
1130 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1131 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1132 nip->ni_flags = htons(0);
1133
1134 memcpy(nip->icmp6_ni_nonce, nonce,
1135 sizeof(nip->icmp6_ni_nonce));
1136 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1137
1138 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1139 sizeof(dst.sin6_addr));
1140 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1141 datalen = 0;
1142 } else if (options & F_FQDNOLD) {
1143 /* packet format in 03 draft - no Subject data on queries */
1144 icp->icmp6_type = ICMP6_NI_QUERY;
1145 icp->icmp6_code = 0; /* code field is always 0 */
1146 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1147 nip->ni_flags = htons(0);
1148
1149 memcpy(nip->icmp6_ni_nonce, nonce,
1150 sizeof(nip->icmp6_ni_nonce));
1151 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1152
1153 cc = ICMP6_NIQLEN;
1154 datalen = 0;
1155 } else if (options & F_NODEADDR) {
1156 icp->icmp6_type = ICMP6_NI_QUERY;
1157 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1158 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1159 nip->ni_flags = naflags;
1160
1161 memcpy(nip->icmp6_ni_nonce, nonce,
1162 sizeof(nip->icmp6_ni_nonce));
1163 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1164
1165 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1166 sizeof(dst.sin6_addr));
1167 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1168 datalen = 0;
1169 } else if (options & F_SUPTYPES) {
1170 icp->icmp6_type = ICMP6_NI_QUERY;
1171 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1172 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1173 /* we support compressed bitmap */
1174 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1175
1176 memcpy(nip->icmp6_ni_nonce, nonce,
1177 sizeof(nip->icmp6_ni_nonce));
1178 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1179 cc = ICMP6_NIQLEN;
1180 datalen = 0;
1181 } else {
1182 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1183 icp->icmp6_code = 0;
1184 icp->icmp6_id = htons(ident);
1185 icp->icmp6_seq = ntohs(seq);
1186 if (timing)
1187 gettimeofday((struct timeval *)
1188 &outpack[ICMP6ECHOLEN], NULL);
1189 cc = ICMP6ECHOLEN + datalen;
1190 }
1191
1192 #ifdef DIAGNOSTIC
1193 if (pingerlen() != cc)
1194 errx(1, "internal error; length mismatch");
1195 #endif
1196
1197 smsghdr.msg_name = (caddr_t)&dst;
1198 smsghdr.msg_namelen = sizeof(dst);
1199 memset(&iov, 0, sizeof(iov));
1200 iov[0].iov_base = (caddr_t)outpack;
1201 iov[0].iov_len = cc;
1202 smsghdr.msg_iov = iov;
1203 smsghdr.msg_iovlen = 1;
1204
1205 i = sendmsg(s, &smsghdr, 0);
1206
1207 if (i < 0 || i != cc) {
1208 if (i < 0)
1209 warn("sendmsg");
1210 printf("ping6: wrote %s %d chars, ret=%d\n", hostname, cc, i);
1211 }
1212 if (!(options & F_QUIET) && options & F_FLOOD)
1213 write(STDOUT_FILENO, &DOT, 1);
1214
1215 return(0);
1216 }
1217
1218 int
1219 myechoreply(const struct icmp6_hdr *icp)
1220 {
1221 if (ntohs(icp->icmp6_id) == ident)
1222 return 1;
1223 else
1224 return 0;
1225 }
1226
1227 int
1228 mynireply(const struct icmp6_nodeinfo *nip)
1229 {
1230 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1231 nonce + sizeof(u_int16_t),
1232 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1233 return 1;
1234 else
1235 return 0;
1236 }
1237
1238 char *
1239 dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, u_char *buf,
1240 size_t bufsiz)
1241 {
1242 int i = 0;
1243 const u_char *cp;
1244 char cresult[MAXDNAME + 1];
1245 const u_char *comp;
1246 int l;
1247
1248 cp = *sp;
1249 *buf = '\0';
1250
1251 if (cp >= ep)
1252 return NULL;
1253 while (cp < ep) {
1254 i = *cp;
1255 if (i == 0 || cp != *sp) {
1256 if (strlcat(buf, ".", bufsiz) >= bufsiz)
1257 return NULL; /*result overrun*/
1258 }
1259 if (i == 0)
1260 break;
1261 cp++;
1262
1263 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1264 /* DNS compression */
1265 if (!base)
1266 return NULL;
1267
1268 comp = base + (i & 0x3f);
1269 if (dnsdecode(&comp, cp, base, cresult,
1270 sizeof(cresult)) == NULL)
1271 return NULL;
1272 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1273 return NULL; /*result overrun*/
1274 break;
1275 } else if ((i & 0x3f) == i) {
1276 if (i > ep - cp)
1277 return NULL; /*source overrun*/
1278 while (i-- > 0 && cp < ep) {
1279 l = snprintf(cresult, sizeof(cresult),
1280 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1281 if (l >= (int)sizeof(cresult))
1282 return NULL;
1283 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1284 return NULL; /*result overrun*/
1285 cp++;
1286 }
1287 } else
1288 return NULL; /*invalid label*/
1289 }
1290 if (i != 0)
1291 return NULL; /*not terminated*/
1292 cp++;
1293 *sp = cp;
1294 return buf;
1295 }
1296
1297 /*
1298 * pr_pack --
1299 * Print out the packet, if it came from us. This logic is necessary
1300 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1301 * which arrive ('tis only fair). This permits multiple copies of this
1302 * program to be run without having intermingled output (or statistics!).
1303 */
1304 void
1305 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1306 {
1307 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1308 struct icmp6_hdr *icp;
1309 struct icmp6_nodeinfo *ni;
1310 int i;
1311 int hoplim;
1312 struct sockaddr *from;
1313 int fromlen;
1314 u_char *cp = NULL, *dp, *end = buf + cc;
1315 struct in6_pktinfo *pktinfo = NULL;
1316 struct timeval tv, *tp;
1317 double triptime = 0;
1318 int dupflag;
1319 size_t off;
1320 int oldfqdn;
1321 u_int16_t seq;
1322 char dnsname[MAXDNAME + 1];
1323
1324 gettimeofday(&tv, NULL);
1325
1326 if (!mhdr || !mhdr->msg_name ||
1327 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1328 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1329 if (options & F_VERBOSE)
1330 warnx("invalid peername\n");
1331 return;
1332 }
1333 from = (struct sockaddr *)mhdr->msg_name;
1334 fromlen = mhdr->msg_namelen;
1335 if (cc < (int)sizeof(struct icmp6_hdr)) {
1336 if (options & F_VERBOSE)
1337 warnx("packet too short (%d bytes) from %s\n", cc,
1338 pr_addr(from, fromlen));
1339 return;
1340 }
1341 icp = (struct icmp6_hdr *)buf;
1342 ni = (struct icmp6_nodeinfo *)buf;
1343 off = 0;
1344
1345 if ((hoplim = get_hoplim(mhdr)) == -1) {
1346 warnx("failed to get receiving hop limit");
1347 return;
1348 }
1349 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1350 warnx("failed to get receiving pakcet information");
1351 return;
1352 }
1353
1354 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1355 seq = ntohs(icp->icmp6_seq);
1356 ++nreceived;
1357 if (timing) {
1358 tp = (struct timeval *)(icp + 1);
1359 tvsub(&tv, tp);
1360 triptime = ((double)tv.tv_sec) * 1000.0 +
1361 ((double)tv.tv_usec) / 1000.0;
1362 tsum += triptime;
1363 tsumsq += triptime * triptime;
1364 if (triptime < tmin)
1365 tmin = triptime;
1366 if (triptime > tmax)
1367 tmax = triptime;
1368 }
1369
1370 if (TST(seq % mx_dup_ck)) {
1371 ++nrepeats;
1372 --nreceived;
1373 dupflag = 1;
1374 } else {
1375 SET(seq % mx_dup_ck);
1376 dupflag = 0;
1377 }
1378
1379 if (options & F_QUIET)
1380 return;
1381
1382 if (options & F_FLOOD)
1383 write(STDOUT_FILENO, &BSPACE, 1);
1384 else {
1385 printf("%d bytes from %s, icmp_seq=%u", cc,
1386 pr_addr(from, fromlen), seq);
1387 printf(" hlim=%d", hoplim);
1388 if ((options & F_VERBOSE) != 0) {
1389 struct sockaddr_in6 dstsa;
1390
1391 memset(&dstsa, 0, sizeof(dstsa));
1392 dstsa.sin6_family = AF_INET6;
1393 #ifdef SIN6_LEN
1394 dstsa.sin6_len = sizeof(dstsa);
1395 #endif
1396 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1397 dstsa.sin6_addr = pktinfo->ipi6_addr;
1398 printf(" dst=%s",
1399 pr_addr((struct sockaddr *)&dstsa,
1400 sizeof(dstsa)));
1401 }
1402 if (timing)
1403 printf(" time=%g ms", triptime);
1404 if (dupflag)
1405 printf("(DUP!)");
1406 /* check the data */
1407 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1408 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1409 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1410 if (*cp != *dp) {
1411 printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
1412 break;
1413 }
1414 }
1415 }
1416 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1417 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce);
1418 ++nreceived;
1419 if (TST(seq % mx_dup_ck)) {
1420 ++nrepeats;
1421 --nreceived;
1422 dupflag = 1;
1423 } else {
1424 SET(seq % mx_dup_ck);
1425 dupflag = 0;
1426 }
1427
1428 if (options & F_QUIET)
1429 return;
1430
1431 printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1432
1433 switch (ntohs(ni->ni_code)) {
1434 case ICMP6_NI_SUCCESS:
1435 break;
1436 case ICMP6_NI_REFUSED:
1437 printf("refused, type 0x%x", ntohs(ni->ni_type));
1438 goto fqdnend;
1439 case ICMP6_NI_UNKNOWN:
1440 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1441 goto fqdnend;
1442 default:
1443 printf("unknown code 0x%x, type 0x%x",
1444 ntohs(ni->ni_code), ntohs(ni->ni_type));
1445 goto fqdnend;
1446 }
1447
1448 switch (ntohs(ni->ni_qtype)) {
1449 case NI_QTYPE_NOOP:
1450 printf("NodeInfo NOOP");
1451 break;
1452 case NI_QTYPE_SUPTYPES:
1453 pr_suptypes(ni, end - (u_char *)ni);
1454 break;
1455 case NI_QTYPE_NODEADDR:
1456 pr_nodeaddr(ni, end - (u_char *)ni);
1457 break;
1458 case NI_QTYPE_FQDN:
1459 default: /* XXX: for backward compatibility */
1460 cp = (u_char *)ni + ICMP6_NIRLEN;
1461 if (buf[off + ICMP6_NIRLEN] ==
1462 cc - off - ICMP6_NIRLEN - 1)
1463 oldfqdn = 1;
1464 else
1465 oldfqdn = 0;
1466 if (oldfqdn) {
1467 cp++; /* skip length */
1468 while (cp < end) {
1469 safeputc(*cp & 0xff);
1470 cp++;
1471 }
1472 } else {
1473 i = 0;
1474 while (cp < end) {
1475 if (dnsdecode((const u_char **)&cp, end,
1476 (const u_char *)(ni + 1), dnsname,
1477 sizeof(dnsname)) == NULL) {
1478 printf("???");
1479 break;
1480 }
1481 /*
1482 * name-lookup special handling for
1483 * truncated name
1484 */
1485 if (cp + 1 <= end && !*cp &&
1486 strlen(dnsname) > 0) {
1487 dnsname[strlen(dnsname) - 1] = '\0';
1488 cp++;
1489 }
1490 printf("%s%s", i > 0 ? "," : "",
1491 dnsname);
1492 }
1493 }
1494 if (options & F_VERBOSE) {
1495 int32_t ttl;
1496 int comma = 0;
1497
1498 printf(" ("); /*)*/
1499
1500 switch (ni->ni_code) {
1501 case ICMP6_NI_REFUSED:
1502 printf("refused");
1503 comma++;
1504 break;
1505 case ICMP6_NI_UNKNOWN:
1506 printf("unknwon qtype");
1507 comma++;
1508 break;
1509 }
1510
1511 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1512 /* case of refusion, unknown */
1513 /*(*/
1514 putchar(')');
1515 goto fqdnend;
1516 }
1517 ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]);
1518 if (comma)
1519 printf(",");
1520 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1521 printf("TTL=%d:meaningless", (int)ttl);
1522 } else {
1523 if (ttl < 0) {
1524 printf("TTL=%d:invalid", ttl);
1525 } else
1526 printf("TTL=%d", ttl);
1527 }
1528 comma++;
1529
1530 if (oldfqdn) {
1531 if (comma)
1532 printf(",");
1533 printf("03 draft");
1534 comma++;
1535 } else {
1536 cp = (u_char *)ni + ICMP6_NIRLEN;
1537 if (cp == end) {
1538 if (comma)
1539 printf(",");
1540 printf("no name");
1541 comma++;
1542 }
1543 }
1544
1545 if (buf[off + ICMP6_NIRLEN] !=
1546 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1547 if (comma)
1548 printf(",");
1549 printf("invalid namelen:%d/%lu",
1550 buf[off + ICMP6_NIRLEN],
1551 (u_long)cc - off - ICMP6_NIRLEN - 1);
1552 comma++;
1553 }
1554 /*(*/
1555 putchar(')');
1556 }
1557 fqdnend:
1558 ;
1559 }
1560 } else {
1561 /* We've got something other than an ECHOREPLY */
1562 if (!(options & F_VERBOSE))
1563 return;
1564 printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1565 pr_icmph(icp, end);
1566 }
1567
1568 if (!(options & F_FLOOD)) {
1569 putchar('\n');
1570 if (options & F_VERBOSE)
1571 pr_exthdrs(mhdr);
1572 fflush(stdout);
1573 }
1574 #undef safeputc
1575 }
1576
1577 void
1578 pr_exthdrs(struct msghdr *mhdr)
1579 {
1580 struct cmsghdr *cm;
1581
1582 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1583 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1584 if (cm->cmsg_level != IPPROTO_IPV6)
1585 continue;
1586
1587 switch (cm->cmsg_type) {
1588 case IPV6_HOPOPTS:
1589 printf(" HbH Options: ");
1590 pr_ip6opt(CMSG_DATA(cm));
1591 break;
1592 case IPV6_DSTOPTS:
1593 #ifdef IPV6_RTHDRDSTOPTS
1594 case IPV6_RTHDRDSTOPTS:
1595 #endif
1596 printf(" Dst Options: ");
1597 pr_ip6opt(CMSG_DATA(cm));
1598 break;
1599 case IPV6_RTHDR:
1600 printf(" Routing: ");
1601 pr_rthdr(CMSG_DATA(cm));
1602 break;
1603 }
1604 }
1605 }
1606
1607 #ifdef USE_RFC3542
1608 void
1609 pr_ip6opt(void *extbuf)
1610 {
1611 struct ip6_hbh *ext;
1612 int currentlen;
1613 u_int8_t type;
1614 size_t extlen, len;
1615 void *databuf;
1616 size_t offset;
1617 u_int16_t value2;
1618 u_int32_t value4;
1619
1620 ext = (struct ip6_hbh *)extbuf;
1621 extlen = (ext->ip6h_len + 1) * 8;
1622 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1623 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1624
1625 currentlen = 0;
1626 while (1) {
1627 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1628 &type, &len, &databuf);
1629 if (currentlen == -1)
1630 break;
1631 switch (type) {
1632 /*
1633 * Note that inet6_opt_next automatically skips any padding
1634 * optins.
1635 */
1636 case IP6OPT_JUMBO:
1637 offset = 0;
1638 offset = inet6_opt_get_val(databuf, offset,
1639 &value4, sizeof(value4));
1640 printf(" Jumbo Payload Opt: Length %u\n",
1641 (u_int32_t)ntohl(value4));
1642 break;
1643 case IP6OPT_ROUTER_ALERT:
1644 offset = 0;
1645 offset = inet6_opt_get_val(databuf, offset,
1646 &value2, sizeof(value2));
1647 printf(" Router Alert Opt: Type %u\n",
1648 ntohs(value2));
1649 break;
1650 default:
1651 printf(" Received Opt %u len %lu\n",
1652 type, (unsigned long)len);
1653 break;
1654 }
1655 }
1656 return;
1657 }
1658 #else /* !USE_RFC3542 */
1659 /* ARGSUSED */
1660 void
1661 pr_ip6opt(void *extbuf __unused)
1662 {
1663 putchar('\n');
1664 return;
1665 }
1666 #endif /* USE_RFC3542 */
1667
1668 #ifdef USE_RFC3542
1669 void
1670 pr_rthdr(void *extbuf)
1671 {
1672 struct in6_addr *in6;
1673 char ntopbuf[INET6_ADDRSTRLEN];
1674 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1675 int i, segments;
1676
1677 /* print fixed part of the header */
1678 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1679 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1680 printf("segments unknown, ");
1681 printf("%d left\n", rh->ip6r_segleft);
1682 return;
1683
1684 }
1685
1686 #else /* !USE_RFC3542 */
1687 /* ARGSUSED */
1688 void
1689 pr_rthdr(void *extbuf __unused)
1690 {
1691 putchar('\n');
1692 return;
1693 }
1694 #endif /* USE_RFC3542 */
1695
1696 int
1697 pr_bitrange(u_int32_t v, int ss, int ii)
1698 {
1699 int off;
1700 int i;
1701
1702 off = 0;
1703 while (off < 32) {
1704 /* shift till we have 0x01 */
1705 if ((v & 0x01) == 0) {
1706 if (ii > 1)
1707 printf("-%u", s + off - 1);
1708 ii = 0;
1709 switch (v & 0x0f) {
1710 case 0x00:
1711 v >>= 4;
1712 off += 4;
1713 continue;
1714 case 0x08:
1715 v >>= 3;
1716 off += 3;
1717 continue;
1718 case 0x04: case 0x0c:
1719 v >>= 2;
1720 off += 2;
1721 continue;
1722 default:
1723 v >>= 1;
1724 off += 1;
1725 continue;
1726 }
1727 }
1728
1729 /* we have 0x01 with us */
1730 for (i = 0; i < 32 - off; i++) {
1731 if ((v & (0x01 << i)) == 0)
1732 break;
1733 }
1734 if (!ii)
1735 printf(" %u", ss + off);
1736 ii += i;
1737 v >>= i; off += i;
1738 }
1739 return ii;
1740 }
1741
1742 /* struct icmp6_nodeinfo *ni: ni->qtype must be SUPTYPES */
1743 void
1744 pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
1745 {
1746 size_t clen;
1747 u_int32_t v;
1748 const u_char *cp, *end;
1749 u_int16_t cur;
1750 struct cbit {
1751 u_int16_t words; /*32bit count*/
1752 u_int16_t skip;
1753 } cbit;
1754 #define MAXQTYPES (1 << 16)
1755 size_t off;
1756 int b;
1757
1758 cp = (u_char *)(ni + 1);
1759 end = ((u_char *)ni) + nilen;
1760 cur = 0;
1761 b = 0;
1762
1763 printf("NodeInfo Supported Qtypes");
1764 if (options & F_VERBOSE) {
1765 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
1766 printf(", compressed bitmap");
1767 else
1768 printf(", raw bitmap");
1769 }
1770
1771 while (cp < end) {
1772 clen = (size_t)(end - cp);
1773 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
1774 if (clen == 0 || clen > MAXQTYPES / 8 ||
1775 clen % sizeof(v)) {
1776 printf("???");
1777 return;
1778 }
1779 } else {
1780 if (clen < sizeof(cbit) || clen % sizeof(v))
1781 return;
1782 memcpy(&cbit, cp, sizeof(cbit));
1783 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
1784 clen)
1785 return;
1786 cp += sizeof(cbit);
1787 clen = ntohs(cbit.words) * sizeof(v);
1788 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
1789 MAXQTYPES)
1790 return;
1791 }
1792
1793 for (off = 0; off < clen; off += sizeof(v)) {
1794 memcpy(&v, cp + off, sizeof(v));
1795 v = (u_int32_t)ntohl(v);
1796 b = pr_bitrange(v, (int)(cur + off * 8), b);
1797 }
1798 /* flush the remaining bits */
1799 b = pr_bitrange(0, (int)(cur + off * 8), b);
1800
1801 cp += clen;
1802 cur += clen * 8;
1803 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
1804 cur += ntohs(cbit.skip) * 32;
1805 }
1806 }
1807
1808 /* struct icmp6_nodeinfo *ni: ni->qtype must be NODEADDR */
1809 void
1810 pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
1811 {
1812 u_char *cp = (u_char *)(ni + 1);
1813 char ntop_buf[INET6_ADDRSTRLEN];
1814 int withttl = 0;
1815
1816 nilen -= sizeof(struct icmp6_nodeinfo);
1817
1818 if (options & F_VERBOSE) {
1819 switch (ni->ni_code) {
1820 case ICMP6_NI_REFUSED:
1821 printf("refused");
1822 break;
1823 case ICMP6_NI_UNKNOWN:
1824 printf("unknown qtype");
1825 break;
1826 }
1827 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
1828 printf(" truncated");
1829 }
1830 putchar('\n');
1831 if (nilen <= 0)
1832 printf(" no address\n");
1833
1834 /*
1835 * In icmp-name-lookups 05 and later, TTL of each returned address
1836 * is contained in the resposne. We try to detect the version
1837 * by the length of the data, but note that the detection algorithm
1838 * is incomplete. We assume the latest draft by default.
1839 */
1840 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
1841 withttl = 1;
1842 while (nilen > 0) {
1843 u_int32_t ttl = 0;
1844
1845 if (withttl) {
1846 /* XXX: alignment? */
1847 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp);
1848 cp += sizeof(u_int32_t);
1849 nilen -= sizeof(u_int32_t);
1850 }
1851
1852 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
1853 NULL)
1854 strncpy(ntop_buf, "?", sizeof(ntop_buf));
1855 printf(" %s", ntop_buf);
1856 if (withttl) {
1857 if (ttl == 0xffffffff) {
1858 /*
1859 * XXX: can this convention be applied to all
1860 * type of TTL (i.e. non-ND TTL)?
1861 */
1862 printf("(TTL=infty)");
1863 }
1864 else
1865 printf("(TTL=%u)", ttl);
1866 }
1867 putchar('\n');
1868
1869 nilen -= sizeof(struct in6_addr);
1870 cp += sizeof(struct in6_addr);
1871 }
1872 }
1873
1874 int
1875 get_hoplim(struct msghdr *mhdr)
1876 {
1877 struct cmsghdr *cm;
1878
1879 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1880 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1881 if (cm->cmsg_len == 0)
1882 return(-1);
1883
1884 if (cm->cmsg_level == IPPROTO_IPV6 &&
1885 cm->cmsg_type == IPV6_HOPLIMIT &&
1886 cm->cmsg_len == CMSG_LEN(sizeof(int)))
1887 return(*(int *)CMSG_DATA(cm));
1888 }
1889
1890 return(-1);
1891 }
1892
1893 struct in6_pktinfo *
1894 get_rcvpktinfo(struct msghdr *mhdr)
1895 {
1896 struct cmsghdr *cm;
1897
1898 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1899 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1900 if (cm->cmsg_len == 0)
1901 return(NULL);
1902
1903 if (cm->cmsg_level == IPPROTO_IPV6 &&
1904 cm->cmsg_type == IPV6_PKTINFO &&
1905 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
1906 return((struct in6_pktinfo *)CMSG_DATA(cm));
1907 }
1908
1909 return(NULL);
1910 }
1911
1912 #ifdef IPV6_RECVPATHMTU
1913 int
1914 get_pathmtu(struct msghdr *mhdr)
1915 {
1916 struct cmsghdr *cm;
1917 struct ip6_mtuinfo *mtuctl = NULL;
1918
1919 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1920 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1921 if (cm->cmsg_len == 0)
1922 return(0);
1923
1924 if (cm->cmsg_level == IPPROTO_IPV6 &&
1925 cm->cmsg_type == IPV6_PATHMTU &&
1926 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
1927 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm);
1928
1929 /*
1930 * If the notified destination is different from
1931 * the one we are pinging, just ignore the info.
1932 * We check the scope ID only when both notified value
1933 * and our own value have non-0 values, because we may
1934 * have used the default scope zone ID for sending,
1935 * in which case the scope ID value is 0.
1936 */
1937 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr,
1938 &dst.sin6_addr) ||
1939 (mtuctl->ip6m_addr.sin6_scope_id &&
1940 dst.sin6_scope_id &&
1941 mtuctl->ip6m_addr.sin6_scope_id !=
1942 dst.sin6_scope_id)) {
1943 if ((options & F_VERBOSE) != 0) {
1944 printf("path MTU for %s is notified. "
1945 "(ignored)\n",
1946 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr,
1947 sizeof(mtuctl->ip6m_addr)));
1948 }
1949 return(0);
1950 }
1951
1952 /*
1953 * Ignore an invalid MTU. XXX: can we just believe
1954 * the kernel check?
1955 */
1956 if (mtuctl->ip6m_mtu < IPV6_MMTU)
1957 return(0);
1958
1959 /* notification for our destination. return the MTU. */
1960 return((int)mtuctl->ip6m_mtu);
1961 }
1962 }
1963 return(0);
1964 }
1965 #endif
1966
1967 #ifdef IPV6_USE_MTU
1968 void
1969 set_pathmtu(int mtu)
1970 {
1971 static int firsttime = 1;
1972 struct cmsghdr *cm;
1973
1974 if (firsttime) {
1975 int oldlen = smsghdr.msg_controllen;
1976 char *oldbuf = smsghdr.msg_control;
1977
1978 /* XXX: We need to enlarge control message buffer */
1979 firsttime = 0; /* prevent further enlargement */
1980
1981 smsghdr.msg_controllen = oldlen + CMSG_SPACE(sizeof(int));
1982 if ((smsghdr.msg_control =
1983 (char *)malloc(smsghdr.msg_controllen)) == NULL)
1984 err(1, "set_pathmtu: malloc");
1985 cm = (struct cmsghdr *)CMSG_FIRSTHDR(&smsghdr);
1986 cm->cmsg_len = CMSG_LEN(sizeof(int));
1987 cm->cmsg_level = IPPROTO_IPV6;
1988 cm->cmsg_type = IPV6_USE_MTU;
1989
1990 cm = (struct cmsghdr *)CMSG_NXTHDR(&smsghdr, cm);
1991 if (oldlen)
1992 memcpy((void *)cm, (void *)oldbuf, oldlen);
1993
1994 free(oldbuf);
1995 }
1996
1997 /*
1998 * look for a cmsgptr that points MTU structure.
1999 * XXX: this procedure seems redundant at this moment, but we'd better
2000 * keep the code generic enough for future extensions.
2001 */
2002 for (cm = CMSG_FIRSTHDR(&smsghdr); cm;
2003 cm = (struct cmsghdr *)CMSG_NXTHDR(&smsghdr, cm)) {
2004 if (cm->cmsg_len == 0) /* XXX: paranoid check */
2005 errx(1, "set_pathmtu: internal error");
2006
2007 if (cm->cmsg_level == IPPROTO_IPV6 &&
2008 cm->cmsg_type == IPV6_USE_MTU &&
2009 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2010 break;
2011 }
2012
2013 if (cm == NULL)
2014 errx(1, "set_pathmtu: internal error: no space for path MTU");
2015
2016 *(int *)CMSG_DATA(cm) = mtu;
2017 }
2018 #endif
2019
2020 /*
2021 * tvsub --
2022 * Subtract 2 timeval structs: out = out - in. Out is assumed to
2023 * be >= in.
2024 */
2025 void
2026 tvsub(struct timeval *out, struct timeval *in)
2027 {
2028 if ((out->tv_usec -= in->tv_usec) < 0) {
2029 --out->tv_sec;
2030 out->tv_usec += 1000000;
2031 }
2032 out->tv_sec -= in->tv_sec;
2033 }
2034
2035 /*
2036 * onint --
2037 * SIGINT handler.
2038 */
2039 /* ARGSUSED */
2040 void
2041 onint(int sig __unused)
2042 {
2043 signal(SIGINT, SIG_IGN);
2044 signal(SIGALRM, SIG_IGN);
2045
2046 summary();
2047
2048 exit(nreceived == 0);
2049 }
2050
2051 /*
2052 * summary --
2053 * Print out statistics.
2054 */
2055 void
2056 summary(void)
2057 {
2058
2059 printf("\n--- %s ping6 statistics ---\n", hostname);
2060 printf("%ld packets transmitted, ", ntransmitted);
2061 printf("%ld packets received, ", nreceived);
2062 if (nrepeats)
2063 printf("+%ld duplicates, ", nrepeats);
2064 if (ntransmitted) {
2065 if (nreceived > ntransmitted)
2066 printf("-- somebody's printing up packets!");
2067 else
2068 printf("%d%% packet loss",
2069 (int) (((ntransmitted - nreceived) * 100) /
2070 ntransmitted));
2071 }
2072 putchar('\n');
2073 if (nreceived && timing) {
2074 /* Only display average to microseconds */
2075 double num = nreceived + nrepeats;
2076 double avg = tsum / num;
2077 double dev = sqrt(tsumsq / num - avg * avg);
2078 printf(
2079 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2080 tmin, avg, tmax, dev);
2081 fflush(stdout);
2082 }
2083 fflush(stdout);
2084 }
2085
2086 /*subject type*/
2087 static const char *niqcode[] = {
2088 "IPv6 address",
2089 "DNS label", /*or empty*/
2090 "IPv4 address",
2091 };
2092
2093 /*result code*/
2094 static const char *nircode[] = {
2095 "Success", "Refused", "Unknown",
2096 };
2097
2098
2099 /*
2100 * pr_icmph --
2101 * Print a descriptive string about an ICMP header.
2102 */
2103 void
2104 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2105 {
2106 char ntop_buf[INET6_ADDRSTRLEN];
2107 struct nd_redirect *red;
2108 struct icmp6_nodeinfo *ni;
2109 char dnsname[MAXDNAME + 1];
2110 const u_char *cp;
2111 size_t l;
2112
2113 switch (icp->icmp6_type) {
2114 case ICMP6_DST_UNREACH:
2115 switch (icp->icmp6_code) {
2116 case ICMP6_DST_UNREACH_NOROUTE:
2117 printf("No Route to Destination\n");
2118 break;
2119 case ICMP6_DST_UNREACH_ADMIN:
2120 printf("Destination Administratively Unreachable\n");
2121 break;
2122 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2123 printf("Destination Unreachable Beyond Scope\n");
2124 break;
2125 case ICMP6_DST_UNREACH_ADDR:
2126 printf("Destination Host Unreachable\n");
2127 break;
2128 case ICMP6_DST_UNREACH_NOPORT:
2129 printf("Destination Port Unreachable\n");
2130 break;
2131 default:
2132 printf("Destination Unreachable, Bad Code: %d\n",
2133 icp->icmp6_code);
2134 break;
2135 }
2136 /* Print returned IP header information */
2137 pr_retip((struct ip6_hdr *)(icp + 1), end);
2138 break;
2139 case ICMP6_PACKET_TOO_BIG:
2140 printf("Packet too big mtu = %d\n",
2141 (int)ntohl(icp->icmp6_mtu));
2142 pr_retip((struct ip6_hdr *)(icp + 1), end);
2143 break;
2144 case ICMP6_TIME_EXCEEDED:
2145 switch (icp->icmp6_code) {
2146 case ICMP6_TIME_EXCEED_TRANSIT:
2147 printf("Time to live exceeded\n");
2148 break;
2149 case ICMP6_TIME_EXCEED_REASSEMBLY:
2150 printf("Frag reassembly time exceeded\n");
2151 break;
2152 default:
2153 printf("Time exceeded, Bad Code: %d\n",
2154 icp->icmp6_code);
2155 break;
2156 }
2157 pr_retip((struct ip6_hdr *)(icp + 1), end);
2158 break;
2159 case ICMP6_PARAM_PROB:
2160 printf("Parameter problem: ");
2161 switch (icp->icmp6_code) {
2162 case ICMP6_PARAMPROB_HEADER:
2163 printf("Erroneous Header ");
2164 break;
2165 case ICMP6_PARAMPROB_NEXTHEADER:
2166 printf("Unknown Nextheader ");
2167 break;
2168 case ICMP6_PARAMPROB_OPTION:
2169 printf("Unrecognized Option ");
2170 break;
2171 default:
2172 printf("Bad code(%d) ", icp->icmp6_code);
2173 break;
2174 }
2175 printf("pointer = 0x%02x\n", (u_int32_t)ntohl(icp->icmp6_pptr));
2176 pr_retip((struct ip6_hdr *)(icp + 1), end);
2177 break;
2178 case ICMP6_ECHO_REQUEST:
2179 printf("Echo Request");
2180 /* XXX ID + Seq + Data */
2181 break;
2182 case ICMP6_ECHO_REPLY:
2183 printf("Echo Reply");
2184 /* XXX ID + Seq + Data */
2185 break;
2186 case ICMP6_MEMBERSHIP_QUERY:
2187 printf("Listener Query");
2188 break;
2189 case ICMP6_MEMBERSHIP_REPORT:
2190 printf("Listener Report");
2191 break;
2192 case ICMP6_MEMBERSHIP_REDUCTION:
2193 printf("Listener Done");
2194 break;
2195 case ND_ROUTER_SOLICIT:
2196 printf("Router Solicitation");
2197 break;
2198 case ND_ROUTER_ADVERT:
2199 printf("Router Advertisement");
2200 break;
2201 case ND_NEIGHBOR_SOLICIT:
2202 printf("Neighbor Solicitation");
2203 break;
2204 case ND_NEIGHBOR_ADVERT:
2205 printf("Neighbor Advertisement");
2206 break;
2207 case ND_REDIRECT:
2208 red = (struct nd_redirect *)icp;
2209 printf("Redirect\n");
2210 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2211 sizeof(ntop_buf)))
2212 strncpy(ntop_buf, "?", sizeof(ntop_buf));
2213 printf("Destination: %s", ntop_buf);
2214 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2215 sizeof(ntop_buf)))
2216 strncpy(ntop_buf, "?", sizeof(ntop_buf));
2217 printf(" New Target: %s", ntop_buf);
2218 break;
2219 case ICMP6_NI_QUERY:
2220 printf("Node Information Query");
2221 /* XXX ID + Seq + Data */
2222 ni = (struct icmp6_nodeinfo *)icp;
2223 l = end - (u_char *)(ni + 1);
2224 printf(", ");
2225 switch (ntohs(ni->ni_qtype)) {
2226 case NI_QTYPE_NOOP:
2227 printf("NOOP");
2228 break;
2229 case NI_QTYPE_SUPTYPES:
2230 printf("Supported qtypes");
2231 break;
2232 case NI_QTYPE_FQDN:
2233 printf("DNS name");
2234 break;
2235 case NI_QTYPE_NODEADDR:
2236 printf("nodeaddr");
2237 break;
2238 case NI_QTYPE_IPV4ADDR:
2239 printf("IPv4 nodeaddr");
2240 break;
2241 default:
2242 printf("unknown qtype");
2243 break;
2244 }
2245 if (options & F_VERBOSE) {
2246 switch (ni->ni_code) {
2247 case ICMP6_NI_SUBJ_IPV6:
2248 if (l == sizeof(struct in6_addr) &&
2249 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2250 sizeof(ntop_buf)) != NULL) {
2251 printf(", subject=%s(%s)",
2252 niqcode[ni->ni_code], ntop_buf);
2253 } else {
2254 #if 1
2255 /* backward compat to -W */
2256 printf(", oldfqdn");
2257 #else
2258 printf(", invalid");
2259 #endif
2260 }
2261 break;
2262 case ICMP6_NI_SUBJ_FQDN:
2263 if (end == (u_char *)(ni + 1)) {
2264 printf(", no subject");
2265 break;
2266 }
2267 printf(", subject=%s", niqcode[ni->ni_code]);
2268 cp = (const u_char *)(ni + 1);
2269 if (dnsdecode(&cp, end, NULL, dnsname,
2270 sizeof(dnsname)) != NULL)
2271 printf("(%s)", dnsname);
2272 else
2273 printf("(invalid)");
2274 break;
2275 case ICMP6_NI_SUBJ_IPV4:
2276 if (l == sizeof(struct in_addr) &&
2277 inet_ntop(AF_INET, ni + 1, ntop_buf,
2278 sizeof(ntop_buf)) != NULL) {
2279 printf(", subject=%s(%s)",
2280 niqcode[ni->ni_code], ntop_buf);
2281 } else
2282 printf(", invalid");
2283 break;
2284 default:
2285 printf(", invalid");
2286 break;
2287 }
2288 }
2289 break;
2290 case ICMP6_NI_REPLY:
2291 printf("Node Information Reply");
2292 /* XXX ID + Seq + Data */
2293 ni = (struct icmp6_nodeinfo *)icp;
2294 printf(", ");
2295 switch (ntohs(ni->ni_qtype)) {
2296 case NI_QTYPE_NOOP:
2297 printf("NOOP");
2298 break;
2299 case NI_QTYPE_SUPTYPES:
2300 printf("Supported qtypes");
2301 break;
2302 case NI_QTYPE_FQDN:
2303 printf("DNS name");
2304 break;
2305 case NI_QTYPE_NODEADDR:
2306 printf("nodeaddr");
2307 break;
2308 case NI_QTYPE_IPV4ADDR:
2309 printf("IPv4 nodeaddr");
2310 break;
2311 default:
2312 printf("unknown qtype");
2313 break;
2314 }
2315 if (options & F_VERBOSE) {
2316 if (ni->ni_code > sizeof(nircode) / sizeof(nircode[0]))
2317 printf(", invalid");
2318 else
2319 printf(", %s", nircode[ni->ni_code]);
2320 }
2321 break;
2322 default:
2323 printf("Bad ICMP type: %d", icp->icmp6_type);
2324 }
2325 }
2326
2327 /*
2328 * pr_iph --
2329 * Print an IP6 header.
2330 */
2331 void
2332 pr_iph(struct ip6_hdr *ip6)
2333 {
2334 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2335 u_int8_t tc;
2336 char ntop_buf[INET6_ADDRSTRLEN];
2337
2338 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2339 tc = (tc >> 4) & 0x0f;
2340 tc |= (ip6->ip6_vfc << 4);
2341
2342 printf("Vr TC Flow Plen Nxt Hlim\n");
2343 printf(" %1x %02x %05x %04x %02x %02x\n",
2344 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2345 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2346 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2347 strncpy(ntop_buf, "?", sizeof(ntop_buf));
2348 printf("%s->", ntop_buf);
2349 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2350 strncpy(ntop_buf, "?", sizeof(ntop_buf));
2351 printf("%s\n", ntop_buf);
2352 }
2353
2354 /*
2355 * pr_addr --
2356 * Return an ascii host address as a dotted quad and optionally with
2357 * a hostname.
2358 */
2359 const char *
2360 pr_addr(struct sockaddr *addr, int addrlen)
2361 {
2362 static char buf[NI_MAXHOST];
2363 int flag;
2364
2365 #ifdef NI_WITHSCOPEID
2366 flag = NI_WITHSCOPEID;
2367 #else
2368 flag = 0;
2369 #endif
2370 if ((options & F_HOSTNAME) == 0)
2371 flag |= NI_NUMERICHOST;
2372
2373 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0)
2374 return (buf);
2375 else
2376 return "?";
2377 }
2378
2379 /*
2380 * pr_retip --
2381 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2382 */
2383 void
2384 pr_retip(struct ip6_hdr *ip6, u_char *end)
2385 {
2386 u_char *cp = (u_char *)ip6, nh;
2387 int hlen;
2388
2389 if (end - (u_char *)ip6 < (int)sizeof(*ip6)) {
2390 printf("IP6");
2391 goto trunc;
2392 }
2393 pr_iph(ip6);
2394 hlen = sizeof(*ip6);
2395
2396 nh = ip6->ip6_nxt;
2397 cp += hlen;
2398 while (end - cp >= 8) {
2399 switch (nh) {
2400 case IPPROTO_HOPOPTS:
2401 printf("HBH ");
2402 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2403 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2404 break;
2405 case IPPROTO_DSTOPTS:
2406 printf("DSTOPT ");
2407 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2408 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2409 break;
2410 case IPPROTO_FRAGMENT:
2411 printf("FRAG ");
2412 hlen = sizeof(struct ip6_frag);
2413 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2414 break;
2415 case IPPROTO_ROUTING:
2416 printf("RTHDR ");
2417 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2418 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2419 break;
2420 #ifdef IPSEC
2421 case IPPROTO_AH:
2422 printf("AH ");
2423 hlen = (((struct ah *)cp)->ah_len+2) << 2;
2424 nh = ((struct ah *)cp)->ah_nxt;
2425 break;
2426 #endif
2427 case IPPROTO_ICMPV6:
2428 printf("ICMP6: type = %d, code = %d\n",
2429 *cp, *(cp + 1));
2430 return;
2431 case IPPROTO_ESP:
2432 printf("ESP\n");
2433 return;
2434 case IPPROTO_TCP:
2435 printf("TCP: from port %u, to port %u (decimal)\n",
2436 (*cp * 256 + *(cp + 1)),
2437 (*(cp + 2) * 256 + *(cp + 3)));
2438 return;
2439 case IPPROTO_UDP:
2440 printf("UDP: from port %u, to port %u (decimal)\n",
2441 (*cp * 256 + *(cp + 1)),
2442 (*(cp + 2) * 256 + *(cp + 3)));
2443 return;
2444 default:
2445 printf("Unknown Header(%d)\n", nh);
2446 return;
2447 }
2448
2449 if ((cp += hlen) >= end)
2450 goto trunc;
2451 }
2452 if (end - cp < 8)
2453 goto trunc;
2454
2455 putchar('\n');
2456 return;
2457
2458 trunc:
2459 printf("...\n");
2460 return;
2461 }
2462
2463 void
2464 fill(char *bp, char *patp)
2465 {
2466 int ii, jj, kk;
2467 int pat[16];
2468 char *cp;
2469
2470 for (cp = patp; *cp; cp++)
2471 if (!isxdigit(*cp))
2472 errx(1, "patterns must be specified as hex digits");
2473 ii = sscanf(patp,
2474 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2475 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2476 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2477 &pat[13], &pat[14], &pat[15]);
2478
2479 /* xxx */
2480 if (ii > 0)
2481 for (kk = 0;
2482 kk <= MAXDATALEN - (8 + (int)sizeof(struct timeval) + ii);
2483 kk += ii)
2484 for (jj = 0; jj < ii; ++jj)
2485 bp[jj + kk] = pat[jj];
2486 if (!(options & F_QUIET)) {
2487 printf("PATTERN: 0x");
2488 for (jj = 0; jj < ii; ++jj)
2489 printf("%02x", bp[jj] & 0xFF);
2490 printf("\n");
2491 }
2492 }
2493
2494 #ifdef IPSEC
2495 #ifdef IPSEC_POLICY_IPSEC
2496 int
2497 setpolicy(int so __unused, char *policy)
2498 {
2499 char *buf;
2500
2501 if (policy == NULL)
2502 return 0; /* ignore */
2503
2504 buf = ipsec_set_policy(policy, strlen(policy));
2505 if (buf == NULL)
2506 errx(1, "%s", ipsec_strerror());
2507 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2508 ipsec_get_policylen(buf)) < 0)
2509 warnx("Unable to set IPSec policy");
2510 free(buf);
2511
2512 return 0;
2513 }
2514 #endif
2515 #endif
2516
2517 char *
2518 nigroup(char *name)
2519 {
2520 char *p;
2521 unsigned char *q;
2522 MD5_CTX ctxt;
2523 u_int8_t digest[16];
2524 u_int8_t c;
2525 size_t l;
2526 char hbuf[NI_MAXHOST];
2527 struct in6_addr in6;
2528
2529 p = strchr(name, '.');
2530 if (!p)
2531 p = name + strlen(name);
2532 l = p - name;
2533 if (l > 63 || l > sizeof(hbuf) - 1)
2534 return NULL; /*label too long*/
2535 strncpy(hbuf, name, l);
2536 hbuf[(int)l] = '\0';
2537
2538 for (q = name; *q; q++) {
2539 if (isupper(*q))
2540 *q = tolower(*q);
2541 }
2542
2543 /* generate 8 bytes of pseudo-random value. */
2544 bzero(&ctxt, sizeof(ctxt));
2545 MD5Init(&ctxt);
2546 c = l & 0xff;
2547 MD5Update(&ctxt, &c, sizeof(c));
2548 MD5Update(&ctxt, name, l);
2549 MD5Final(digest, &ctxt);
2550
2551 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
2552 return NULL; /*XXX*/
2553 bcopy(digest, &in6.s6_addr[12], 4);
2554
2555 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2556 return NULL;
2557
2558 return strdup(hbuf);
2559 }
2560
2561 void
2562 usage(void)
2563 {
2564 fprintf(stderr,
2565 "usage: ping6 [-dfH"
2566 #ifdef IPV6_USE_MIN_MTU
2567 "m"
2568 #endif
2569 "nNqtvwW"
2570 #ifdef IPV6_REACHCONF
2571 "R"
2572 #endif
2573 #ifdef IPSEC
2574 #ifdef IPSEC_POLICY_IPSEC
2575 "] [-P policy"
2576 #else
2577 "AE"
2578 #endif
2579 #endif
2580 "] [-a [aAclsg]] [-b sockbufsiz] [-c count] \n"
2581 "\t[-I interface] [-i wait] [-l preload] [-p pattern] "
2582 "[-S sourceaddr]\n"
2583 "\t[-s packetsize] [-h hoplimit] [hops...] host\n");
2584 exit(1);
2585 }
DragonFly BSD