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Expand PMF_FN_* macros.
[netbsd-mini2440.git] / sbin / ping6 / ping6.c
blob12b62e489c3b8df628d9b4b287212e30d2e15ab9
1 /* $NetBSD: ping6.c,v 1.71 2008/10/13 13:47:35 dholland Exp $ */
2 /* $KAME: ping6.c,v 1.164 2002/11/16 14:05:37 itojun Exp $ */
3
4 /*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */
34
35 /*
36 * Copyright (c) 1989, 1993
37 * The Regents of the University of California. All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Mike Muuss.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. Neither the name of the University nor the names of its contributors
51 * may be used to endorse or promote products derived from this software
52 * without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 */
66
67 #if 0
68 #ifndef lint
69 static char copyright[] =
70 "@(#) Copyright (c) 1989, 1993\n\
71 The Regents of the University of California. All rights reserved.\n";
72 #endif /* not lint */
73
74 #ifndef lint
75 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
76 #endif /* not lint */
77 #else
78 #include <sys/cdefs.h>
79 #ifndef lint
80 __RCSID("$NetBSD: ping6.c,v 1.71 2008/10/13 13:47:35 dholland Exp $");
81 #endif
82 #endif
83
84 /*
85 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
86 * measure round-trip-delays and packet loss across network paths.
87 *
88 * Author -
89 * Mike Muuss
90 * U. S. Army Ballistic Research Laboratory
91 * December, 1983
92 *
93 * Status -
94 * Public Domain. Distribution Unlimited.
95 * Bugs -
96 * More statistics could always be gathered.
97 * This program has to run SUID to ROOT to access the ICMP socket.
98 */
99 /*
100 * NOTE:
101 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
102 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
103 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
104 * network attached to 1 or more interfaces)
105 */
106
107 #include <sys/param.h>
108 #include <sys/uio.h>
109 #include <sys/socket.h>
110 #include <sys/time.h>
111
112 #include <net/if.h>
113 #include <net/route.h>
114
115 #include <netinet/in.h>
116 #include <netinet/ip6.h>
117 #include <netinet/icmp6.h>
118 #include <arpa/inet.h>
119 #include <arpa/nameser.h>
120 #include <netdb.h>
121
122 #include <ctype.h>
123 #include <err.h>
124 #include <errno.h>
125 #include <fcntl.h>
126 #include <math.h>
127 #include <signal.h>
128 #include <stdio.h>
129 #include <stdlib.h>
130 #include <string.h>
131 #include <unistd.h>
132 #include <poll.h>
133
134 #ifdef IPSEC
135 #include <netinet6/ah.h>
136 #include <netinet6/ipsec.h>
137 #endif
138
139 #include <md5.h>
140
141 struct tv32 {
142 u_int32_t tv32_sec;
143 u_int32_t tv32_usec;
144 };
145
146 #define MAXPACKETLEN 131072
147 #define IP6LEN 40
148 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
149 #define ICMP6ECHOTMLEN sizeof(struct tv32)
150 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
151 /* FQDN case, 64 bits of nonce + 32 bits ttl */
152 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
153 #define EXTRA 256 /* for AH and various other headers. weird. */
154 #define DEFDATALEN ICMP6ECHOTMLEN
155 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
156 #define NROUTES 9 /* number of record route slots */
157
158 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
159 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
160 #define SET(bit) (A(bit) |= B(bit))
161 #define CLR(bit) (A(bit) &= (~B(bit)))
162 #define TST(bit) (A(bit) & B(bit))
163
164 #define F_FLOOD 0x0001
165 #define F_INTERVAL 0x0002
166 #define F_PINGFILLED 0x0008
167 #define F_QUIET 0x0010
168 #define F_RROUTE 0x0020
169 #define F_SO_DEBUG 0x0040
170 #define F_VERBOSE 0x0100
171 #ifdef IPSEC
172 #ifdef IPSEC_POLICY_IPSEC
173 #define F_POLICY 0x0400
174 #else
175 #define F_AUTHHDR 0x0200
176 #define F_ENCRYPT 0x0400
177 #endif /*IPSEC_POLICY_IPSEC*/
178 #endif /*IPSEC*/
179 #define F_NODEADDR 0x0800
180 #define F_FQDN 0x1000
181 #define F_INTERFACE 0x2000
182 #define F_SRCADDR 0x4000
183 #ifdef IPV6_REACHCONF
184 #define F_REACHCONF 0x8000
185 #endif
186 #define F_HOSTNAME 0x10000
187 #define F_FQDNOLD 0x20000
188 #define F_NIGROUP 0x40000
189 #define F_SUPTYPES 0x80000
190 #define F_NOMINMTU 0x100000
191 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
192 u_int options;
193
194 #define IN6LEN sizeof(struct in6_addr)
195 #define SA6LEN sizeof(struct sockaddr_in6)
196 #define DUMMY_PORT 10101
197
198 #define SIN6(s) ((struct sockaddr_in6 *)(s))
199
200 /*
201 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
202 * number of received sequence numbers we can keep track of. Change 128
203 * to 8192 for complete accuracy...
204 */
205 #define MAX_DUP_CHK (8 * 8192)
206 int mx_dup_ck = MAX_DUP_CHK;
207 char rcvd_tbl[MAX_DUP_CHK / 8];
208
209 struct addrinfo *res;
210 struct sockaddr_in6 dst; /* who to ping6 */
211 struct sockaddr_in6 src; /* src addr of this packet */
212 socklen_t srclen;
213 int datalen = DEFDATALEN;
214 int s; /* socket file descriptor */
215 u_char outpack[MAXPACKETLEN];
216 char BSPACE = '\b'; /* characters written for flood */
217 char DOT = '.';
218 char *hostname;
219 int ident; /* process id to identify our packets */
220 u_int8_t nonce[8]; /* nonce field for node information */
221 int hoplimit = -1; /* hoplimit */
222 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
223
224 /* counters */
225 long npackets; /* max packets to transmit */
226 long nreceived; /* # of packets we got back */
227 long nrepeats; /* number of duplicates */
228 long ntransmitted; /* sequence # for outbound packets = #sent */
229 struct timeval interval = {1, 0}; /* interval between packets */
230
231 /* timing */
232 int timing; /* flag to do timing */
233 double tmin = 999999999.0; /* minimum round trip time */
234 double tmax = 0.0; /* maximum round trip time */
235 double tsum = 0.0; /* sum of all times, for doing average */
236 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
237
238 /* for node addresses */
239 u_short naflags;
240
241 /* for ancillary data(advanced API) */
242 struct msghdr smsghdr;
243 struct iovec smsgiov;
244 char *scmsg = 0;
245
246 volatile sig_atomic_t seenalrm;
247 volatile sig_atomic_t seenint;
248 #ifdef SIGINFO
249 volatile sig_atomic_t seeninfo;
250 #endif
251
252 void fill(char *, char *);
253 int get_hoplim(struct msghdr *);
254 int get_pathmtu(struct msghdr *);
255 struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
256 void onsignal(int);
257 void retransmit(void);
258 void onint(int);
259 size_t pingerlen(void);
260 int pinger(void);
261 const char *pr_addr(struct sockaddr *, int);
262 void pr_icmph(struct icmp6_hdr *, u_char *);
263 void pr_iph(struct ip6_hdr *);
264 void pr_suptypes(struct icmp6_nodeinfo *, size_t);
265 void pr_nodeaddr(struct icmp6_nodeinfo *, int);
266 int myechoreply(const struct icmp6_hdr *);
267 int mynireply(const struct icmp6_nodeinfo *);
268 char *dnsdecode(const u_char **, const u_char *, const u_char *,
269 char *, size_t);
270 void pr_pack(u_char *, int, struct msghdr *);
271 void pr_exthdrs(struct msghdr *);
272 void pr_ip6opt(void *);
273 void pr_rthdr(void *);
274 int pr_bitrange(u_int32_t, int, int);
275 void pr_retip(struct ip6_hdr *, u_char *);
276 void summary(void);
277 void tvsub(struct timeval *, struct timeval *);
278 int setpolicy(int, char *);
279 char *nigroup(char *);
280 void usage(void);
281
282 int
283 main(int argc, char *argv[])
284 {
285 struct itimerval itimer;
286 struct sockaddr_in6 from;
287 int timeout;
288 struct addrinfo hints;
289 struct pollfd fdmaskp[1];
290 int cc;
291 u_int i, packlen;
292 int ch, hold, preload, optval, ret_ga;
293 u_char *datap, *packet;
294 char *e, *target, *ifname = NULL, *gateway = NULL;
295 int ip6optlen = 0;
296 struct cmsghdr *scmsgp = NULL;
297 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
298 u_long lsockbufsize;
299 int sockbufsize = 0;
300 #endif
301 int usepktinfo = 0;
302 struct in6_pktinfo *pktinfo = NULL;
303 struct ip6_rthdr *rthdr = NULL;
304 #ifdef IPSEC_POLICY_IPSEC
305 char *policy_in = NULL;
306 char *policy_out = NULL;
307 #endif
308 double intval;
309 size_t rthlen;
310 #ifdef IPV6_USE_MIN_MTU
311 int mflag = 0;
312 #endif
313
314 /* just to be sure */
315 memset(&smsghdr, 0, sizeof(smsghdr));
316 memset(&smsgiov, 0, sizeof(smsgiov));
317
318 preload = 0;
319 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
320 #ifndef IPSEC
321 #define ADDOPTS
322 #else
323 #ifdef IPSEC_POLICY_IPSEC
324 #define ADDOPTS "P:"
325 #else
326 #define ADDOPTS "AE"
327 #endif /*IPSEC_POLICY_IPSEC*/
328 #endif
329 while ((ch = getopt(argc, argv,
330 "a:b:c:dfHg:h:I:i:l:mnNp:qRS:s:tvwW" ADDOPTS)) != -1) {
331 #undef ADDOPTS
332 switch (ch) {
333 case 'a':
334 {
335 char *cp;
336
337 options &= ~F_NOUSERDATA;
338 options |= F_NODEADDR;
339 for (cp = optarg; *cp != '\0'; cp++) {
340 switch (*cp) {
341 case 'a':
342 naflags |= NI_NODEADDR_FLAG_ALL;
343 break;
344 case 'c':
345 case 'C':
346 naflags |= NI_NODEADDR_FLAG_COMPAT;
347 break;
348 case 'l':
349 case 'L':
350 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
351 break;
352 case 's':
353 case 'S':
354 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
355 break;
356 case 'g':
357 case 'G':
358 naflags |= NI_NODEADDR_FLAG_GLOBAL;
359 break;
360 case 'A': /* experimental. not in the spec */
361 #ifdef NI_NODEADDR_FLAG_ANYCAST
362 naflags |= NI_NODEADDR_FLAG_ANYCAST;
363 break;
364 #else
365 errx(1,
366 "-a A is not supported on the platform");
367 /*NOTREACHED*/
368 #endif
369 default:
370 usage();
371 /*NOTREACHED*/
372 }
373 }
374 break;
375 }
376 case 'b':
377 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
378 errno = 0;
379 e = NULL;
380 lsockbufsize = strtoul(optarg, &e, 10);
381 sockbufsize = lsockbufsize;
382 if (errno || !*optarg || *e ||
383 (u_long)sockbufsize != lsockbufsize)
384 errx(1, "invalid socket buffer size");
385 #else
386 errx(1,
387 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
388 #endif
389 break;
390 case 'c':
391 npackets = strtol(optarg, &e, 10);
392 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
393 errx(1,
394 "illegal number of packets -- %s", optarg);
395 break;
396 case 'd':
397 options |= F_SO_DEBUG;
398 break;
399 case 'f':
400 if (getuid()) {
401 errno = EPERM;
402 errx(1, "Must be superuser to flood ping");
403 }
404 options |= F_FLOOD;
405 setbuf(stdout, (char *)NULL);
406 break;
407 case 'g':
408 gateway = optarg;
409 break;
410 case 'H':
411 options |= F_HOSTNAME;
412 break;
413 case 'h': /* hoplimit */
414 hoplimit = strtol(optarg, &e, 10);
415 if (*optarg == '\0' || *e != '\0')
416 errx(1, "illegal hoplimit %s", optarg);
417 if (255 < hoplimit || hoplimit < -1)
418 errx(1,
419 "illegal hoplimit -- %s", optarg);
420 break;
421 case 'I':
422 ifname = optarg;
423 options |= F_INTERFACE;
424 #ifndef USE_SIN6_SCOPE_ID
425 usepktinfo++;
426 #endif
427 break;
428 case 'i': /* wait between sending packets */
429 intval = strtod(optarg, &e);
430 if (*optarg == '\0' || *e != '\0')
431 errx(1, "illegal timing interval %s", optarg);
432 if (intval < 1 && getuid()) {
433 errx(1, "%s: only root may use interval < 1s",
434 strerror(EPERM));
435 }
436 interval.tv_sec = (long)intval;
437 interval.tv_usec =
438 (long)((intval - interval.tv_sec) * 1000000);
439 if (interval.tv_sec < 0)
440 errx(1, "illegal timing interval %s", optarg);
441 /* less than 1/hz does not make sense */
442 if (interval.tv_sec == 0 && interval.tv_usec < 10000) {
443 warnx("too small interval, raised to 0.01");
444 interval.tv_usec = 10000;
445 }
446 options |= F_INTERVAL;
447 break;
448 case 'l':
449 if (getuid()) {
450 errno = EPERM;
451 errx(1, "Must be superuser to preload");
452 }
453 preload = strtol(optarg, &e, 10);
454 if (preload < 0 || *optarg == '\0' || *e != '\0')
455 errx(1, "illegal preload value -- %s", optarg);
456 break;
457 case 'm':
458 #ifdef IPV6_USE_MIN_MTU
459 mflag++;
460 break;
461 #else
462 errx(1, "-%c is not supported on this platform", ch);
463 /*NOTREACHED*/
464 #endif
465 case 'n':
466 options &= ~F_HOSTNAME;
467 break;
468 case 'N':
469 options |= F_NIGROUP;
470 break;
471 case 'p': /* fill buffer with user pattern */
472 options |= F_PINGFILLED;
473 fill((char *)datap, optarg);
474 break;
475 case 'q':
476 options |= F_QUIET;
477 break;
478 case 'R':
479 #ifdef IPV6_REACHCONF
480 options |= F_REACHCONF;
481 break;
482 #else
483 errx(1, "-R is not supported in this configuration");
484 #endif
485 case 'S':
486 memset(&hints, 0, sizeof(struct addrinfo));
487 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
488 hints.ai_family = AF_INET6;
489 hints.ai_socktype = SOCK_RAW;
490 hints.ai_protocol = IPPROTO_ICMPV6;
491
492 ret_ga = getaddrinfo(optarg, NULL, &hints, &res);
493 if (ret_ga) {
494 errx(1, "invalid source address: %s",
495 gai_strerror(ret_ga));
496 }
497 /*
498 * res->ai_family must be AF_INET6 and res->ai_addrlen
499 * must be sizeof(src).
500 */
501 memcpy(&src, res->ai_addr, res->ai_addrlen);
502 srclen = res->ai_addrlen;
503 freeaddrinfo(res);
504 options |= F_SRCADDR;
505 break;
506 case 's': /* size of packet to send */
507 datalen = strtol(optarg, &e, 10);
508 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
509 errx(1, "illegal datalen value -- %s", optarg);
510 if (datalen > MAXDATALEN) {
511 errx(1,
512 "datalen value too large, maximum is %d",
513 MAXDATALEN);
514 }
515 break;
516 case 't':
517 options &= ~F_NOUSERDATA;
518 options |= F_SUPTYPES;
519 break;
520 case 'v':
521 options |= F_VERBOSE;
522 break;
523 case 'w':
524 options &= ~F_NOUSERDATA;
525 options |= F_FQDN;
526 break;
527 case 'W':
528 options &= ~F_NOUSERDATA;
529 options |= F_FQDNOLD;
530 break;
531 #ifdef IPSEC
532 #ifdef IPSEC_POLICY_IPSEC
533 case 'P':
534 options |= F_POLICY;
535 if (!strncmp("in", optarg, 2)) {
536 if ((policy_in = strdup(optarg)) == NULL)
537 errx(1, "strdup");
538 } else if (!strncmp("out", optarg, 3)) {
539 if ((policy_out = strdup(optarg)) == NULL)
540 errx(1, "strdup");
541 } else
542 errx(1, "invalid security policy");
543 break;
544 #else
545 case 'A':
546 options |= F_AUTHHDR;
547 break;
548 case 'E':
549 options |= F_ENCRYPT;
550 break;
551 #endif /*IPSEC_POLICY_IPSEC*/
552 #endif /*IPSEC*/
553 default:
554 usage();
555 /*NOTREACHED*/
556 }
557 }
558
559 argc -= optind;
560 argv += optind;
561
562 if (argc < 1) {
563 usage();
564 /*NOTREACHED*/
565 }
566
567 if (argc > 1) {
568 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
569 argc - 1));
570 if (rthlen == 0) {
571 errx(1, "too many intermediate hops");
572 /*NOTREACHED*/
573 }
574 ip6optlen += rthlen;
575 }
576
577 if (options & F_NIGROUP) {
578 target = nigroup(argv[argc - 1]);
579 if (target == NULL) {
580 usage();
581 /*NOTREACHED*/
582 }
583 } else
584 target = argv[argc - 1];
585
586 /* getaddrinfo */
587 memset(&hints, 0, sizeof(struct addrinfo));
588 hints.ai_flags = AI_CANONNAME;
589 hints.ai_family = AF_INET6;
590 hints.ai_socktype = SOCK_RAW;
591 hints.ai_protocol = IPPROTO_ICMPV6;
592
593 ret_ga = getaddrinfo(target, NULL, &hints, &res);
594 if (ret_ga)
595 errx(1, "%s", gai_strerror(ret_ga));
596 if (res->ai_canonname)
597 hostname = res->ai_canonname;
598 else
599 hostname = target;
600
601 if (!res->ai_addr)
602 errx(1, "getaddrinfo failed");
603
604 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
605
606 if ((s = socket(res->ai_family, res->ai_socktype,
607 res->ai_protocol)) < 0)
608 err(1, "socket");
609
610 /* set the source address if specified. */
611 if ((options & F_SRCADDR) &&
612 bind(s, (struct sockaddr *)&src, srclen) != 0) {
613 err(1, "bind");
614 }
615
616 /* set the gateway (next hop) if specified */
617 if (gateway) {
618 struct addrinfo ghints, *gres;
619 int error;
620
621 memset(&ghints, 0, sizeof(ghints));
622 ghints.ai_family = AF_INET6;
623 ghints.ai_socktype = SOCK_RAW;
624 ghints.ai_protocol = IPPROTO_ICMPV6;
625
626 error = getaddrinfo(gateway, NULL, &hints, &gres);
627 if (error) {
628 errx(1, "getaddrinfo for the gateway %s: %s",
629 gateway, gai_strerror(error));
630 }
631 if (gres->ai_next && (options & F_VERBOSE))
632 warnx("gateway resolves to multiple addresses");
633
634 if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP,
635 gres->ai_addr, gres->ai_addrlen)) {
636 err(1, "setsockopt(IPV6_NEXTHOP)");
637 }
638
639 freeaddrinfo(gres);
640 }
641
642 /*
643 * let the kerel pass extension headers of incoming packets,
644 * for privileged socket options
645 */
646 if ((options & F_VERBOSE) != 0) {
647 int opton = 1;
648
649 #ifdef IPV6_RECVHOPOPTS
650 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
651 sizeof(opton)))
652 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
653 #else /* old adv. API */
654 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
655 sizeof(opton)))
656 err(1, "setsockopt(IPV6_HOPOPTS)");
657 #endif
658 #ifdef IPV6_RECVDSTOPTS
659 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
660 sizeof(opton)))
661 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
662 #else /* old adv. API */
663 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
664 sizeof(opton)))
665 err(1, "setsockopt(IPV6_DSTOPTS)");
666 #endif
667 #ifdef IPV6_RECVRTHDRDSTOPTS
668 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
669 sizeof(opton)))
670 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
671 #endif
672 }
673
674 /* revoke root privilege */
675 seteuid(getuid());
676 setuid(getuid());
677
678 if ((options & F_FLOOD) && (options & F_INTERVAL))
679 errx(1, "-f and -i incompatible options");
680
681 if ((options & F_NOUSERDATA) == 0) {
682 if (datalen >= (int)sizeof(struct tv32)) {
683 /* we can time transfer */
684 timing = 1;
685 } else
686 timing = 0;
687 /* in F_VERBOSE case, we may get non-echoreply packets*/
688 if (options & F_VERBOSE)
689 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
690 else
691 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
692 } else {
693 /* suppress timing for node information query */
694 timing = 0;
695 datalen = 2048;
696 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
697 }
698
699 if (!(packet = (u_char *)malloc(packlen)))
700 err(1, "Unable to allocate packet");
701 if (!(options & F_PINGFILLED))
702 for (i = ICMP6ECHOLEN; i < packlen; ++i)
703 *datap++ = i;
704
705 ident = arc4random() & 0xFFFF;
706 memset(nonce, 0, sizeof(nonce));
707 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
708 *((u_int32_t *)&nonce[i]) = arc4random();
709
710 hold = 1;
711
712 if (options & F_SO_DEBUG)
713 (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
714 sizeof(hold));
715 optval = IPV6_DEFHLIM;
716 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
717 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
718 &optval, sizeof(optval)) == -1)
719 err(1, "IPV6_MULTICAST_HOPS");
720 #ifdef IPV6_USE_MIN_MTU
721 if (mflag != 1) {
722 optval = mflag > 1 ? 0 : 1;
723
724 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
725 &optval, sizeof(optval)) == -1)
726 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
727 }
728 #ifdef IPV6_RECVPATHMTU
729 else {
730 optval = 1;
731 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
732 &optval, sizeof(optval)) == -1)
733 err(1, "setsockopt(IPV6_RECVPATHMTU)");
734 }
735 #endif /* IPV6_RECVPATHMTU */
736 #endif /* IPV6_USE_MIN_MTU */
737
738 #ifdef IPSEC
739 #ifdef IPSEC_POLICY_IPSEC
740 if (options & F_POLICY) {
741 if (setpolicy(s, policy_in) < 0)
742 errx(1, "%s", ipsec_strerror());
743 if (setpolicy(s, policy_out) < 0)
744 errx(1, "%s", ipsec_strerror());
745 }
746 #else
747 if (options & F_AUTHHDR) {
748 optval = IPSEC_LEVEL_REQUIRE;
749 #ifdef IPV6_AUTH_TRANS_LEVEL
750 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
751 &optval, sizeof(optval)) == -1)
752 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
753 #else /* old def */
754 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
755 &optval, sizeof(optval)) == -1)
756 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
757 #endif
758 }
759 if (options & F_ENCRYPT) {
760 optval = IPSEC_LEVEL_REQUIRE;
761 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
762 &optval, sizeof(optval)) == -1)
763 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
764 }
765 #endif /*IPSEC_POLICY_IPSEC*/
766 #endif
767
768 #ifdef ICMP6_FILTER
769 {
770 struct icmp6_filter filt;
771 if (!(options & F_VERBOSE)) {
772 ICMP6_FILTER_SETBLOCKALL(&filt);
773 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
774 (options & F_NODEADDR) || (options & F_SUPTYPES))
775 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
776 else
777 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
778 } else {
779 ICMP6_FILTER_SETPASSALL(&filt);
780 }
781 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
782 sizeof(filt)) < 0)
783 err(1, "setsockopt(ICMP6_FILTER)");
784 }
785 #endif /*ICMP6_FILTER*/
786
787 /* let the kerel pass extension headers of incoming packets */
788 if ((options & F_VERBOSE) != 0) {
789 int opton = 1;
790
791 #ifdef IPV6_RECVRTHDR
792 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
793 sizeof(opton)))
794 err(1, "setsockopt(IPV6_RECVRTHDR)");
795 #else /* old adv. API */
796 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
797 sizeof(opton)))
798 err(1, "setsockopt(IPV6_RTHDR)");
799 #endif
800 }
801
802 /*
803 optval = 1;
804 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
805 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
806 &optval, sizeof(optval)) == -1)
807 err(1, "IPV6_MULTICAST_LOOP");
808 */
809
810 /* Specify the outgoing interface and/or the source address */
811 if (usepktinfo)
812 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
813
814 if (hoplimit != -1)
815 ip6optlen += CMSG_SPACE(sizeof(int));
816
817 #ifdef IPV6_REACHCONF
818 if (options & F_REACHCONF)
819 ip6optlen += CMSG_SPACE(0);
820 #endif
821
822 /* set IP6 packet options */
823 if (ip6optlen) {
824 if ((scmsg = (char *)malloc(ip6optlen)) == 0)
825 errx(1, "can't allocate enough memory");
826 smsghdr.msg_control = (caddr_t)scmsg;
827 smsghdr.msg_controllen = ip6optlen;
828 scmsgp = (struct cmsghdr *)scmsg;
829 }
830 if (usepktinfo) {
831 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
832 memset(pktinfo, 0, sizeof(*pktinfo));
833 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
834 scmsgp->cmsg_level = IPPROTO_IPV6;
835 scmsgp->cmsg_type = IPV6_PKTINFO;
836 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
837 }
838
839 /* set the outgoing interface */
840 if (ifname) {
841 #ifndef USE_SIN6_SCOPE_ID
842 /* pktinfo must have already been allocated */
843 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
844 errx(1, "%s: invalid interface name", ifname);
845 #else
846 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
847 errx(1, "%s: invalid interface name", ifname);
848 #endif
849 }
850 if (hoplimit != -1) {
851 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
852 scmsgp->cmsg_level = IPPROTO_IPV6;
853 scmsgp->cmsg_type = IPV6_HOPLIMIT;
854 *(int *)(CMSG_DATA(scmsgp)) = hoplimit;
855
856 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
857 }
858 #ifdef IPV6_REACHCONF
859 if (options & F_REACHCONF) {
860 scmsgp->cmsg_len = CMSG_LEN(0);
861 scmsgp->cmsg_level = IPPROTO_IPV6;
862 scmsgp->cmsg_type = IPV6_REACHCONF;
863
864 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
865 }
866 #endif
867
868 if (argc > 1) { /* some intermediate addrs are specified */
869 int hops, error;
870 int rthdrlen;
871
872 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
873 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
874 scmsgp->cmsg_level = IPPROTO_IPV6;
875 scmsgp->cmsg_type = IPV6_RTHDR;
876 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
877 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
878 IPV6_RTHDR_TYPE_0, argc - 1);
879 if (rthdr == NULL)
880 errx(1, "can't initialize rthdr");
881
882 for (hops = 0; hops < argc - 1; hops++) {
883 struct addrinfo *iaip;
884
885 if ((error = getaddrinfo(argv[hops], NULL, &hints,
886 &iaip)))
887 errx(1, "%s", gai_strerror(error));
888 if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6)
889 errx(1,
890 "bad addr family of an intermediate addr");
891
892 if (inet6_rth_add(rthdr,
893 &(SIN6(iaip->ai_addr))->sin6_addr))
894 errx(1, "can't add an intermediate node");
895 freeaddrinfo(iaip);
896 }
897
898 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
899 }
900
901 if (!(options & F_SRCADDR)) {
902 /*
903 * get the source address. XXX since we revoked the root
904 * privilege, we cannot use a raw socket for this.
905 */
906 int dummy;
907 socklen_t len = sizeof(src);
908
909 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
910 err(1, "UDP socket");
911
912 src.sin6_family = AF_INET6;
913 src.sin6_addr = dst.sin6_addr;
914 src.sin6_port = ntohs(DUMMY_PORT);
915 src.sin6_scope_id = dst.sin6_scope_id;
916
917 if (pktinfo &&
918 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
919 (void *)pktinfo, sizeof(*pktinfo)))
920 err(1, "UDP setsockopt(IPV6_PKTINFO)");
921
922 if (hoplimit != -1 &&
923 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
924 (void *)&hoplimit, sizeof(hoplimit)))
925 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
926
927 if (hoplimit != -1 &&
928 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
929 (void *)&hoplimit, sizeof(hoplimit)))
930 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
931
932 if (rthdr &&
933 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
934 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
935 err(1, "UDP setsockopt(IPV6_RTHDR)");
936
937 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
938 err(1, "UDP connect");
939
940 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
941 err(1, "getsockname");
942
943 close(dummy);
944 }
945
946 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
947 if (sockbufsize) {
948 if (datalen > sockbufsize)
949 warnx("you need -b to increase socket buffer size");
950 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
951 sizeof(sockbufsize)) < 0)
952 err(1, "setsockopt(SO_SNDBUF)");
953 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
954 sizeof(sockbufsize)) < 0)
955 err(1, "setsockopt(SO_RCVBUF)");
956 }
957 else {
958 if (datalen > 8 * 1024) /*XXX*/
959 warnx("you need -b to increase socket buffer size");
960 /*
961 * When pinging the broadcast address, you can get a lot of
962 * answers. Doing something so evil is useful if you are trying
963 * to stress the ethernet, or just want to fill the arp cache
964 * to get some stuff for /etc/ethers.
965 */
966 hold = 48 * 1024;
967 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
968 sizeof(hold));
969 }
970 #endif
971
972 optval = 1;
973 #ifndef USE_SIN6_SCOPE_ID
974 #ifdef IPV6_RECVPKTINFO
975 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
976 sizeof(optval)) < 0)
977 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
978 #else /* old adv. API */
979 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
980 sizeof(optval)) < 0)
981 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
982 #endif
983 #endif /* USE_SIN6_SCOPE_ID */
984 #ifdef IPV6_RECVHOPLIMIT
985 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
986 sizeof(optval)) < 0)
987 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
988 #else /* old adv. API */
989 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
990 sizeof(optval)) < 0)
991 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
992 #endif
993
994 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
995 (unsigned long)(pingerlen() - 8));
996 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
997 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
998
999 while (preload--) /* Fire off them quickies. */
1000 (void)pinger();
1001
1002 (void)signal(SIGINT, onsignal);
1003 #ifdef SIGINFO
1004 (void)signal(SIGINFO, onsignal);
1005 #endif
1006
1007 if ((options & F_FLOOD) == 0) {
1008 (void)signal(SIGALRM, onsignal);
1009 itimer.it_interval = interval;
1010 itimer.it_value = interval;
1011 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1012 if (ntransmitted == 0)
1013 retransmit();
1014 }
1015
1016 seenalrm = seenint = 0;
1017 #ifdef SIGINFO
1018 seeninfo = 0;
1019 #endif
1020
1021 for (;;) {
1022 struct msghdr m;
1023 struct cmsghdr *cm;
1024 u_char buf[1024];
1025 struct iovec iov[2];
1026
1027 /* signal handling */
1028 if (seenalrm) {
1029 retransmit();
1030 seenalrm = 0;
1031 continue;
1032 }
1033 if (seenint) {
1034 onint(SIGINT);
1035 seenint = 0;
1036 continue;
1037 }
1038 #ifdef SIGINFO
1039 if (seeninfo) {
1040 summary();
1041 seeninfo = 0;
1042 continue;
1043 }
1044 #endif
1045
1046 if (options & F_FLOOD) {
1047 (void)pinger();
1048 timeout = 10;
1049 } else {
1050 timeout = INFTIM;
1051 }
1052 fdmaskp[0].fd = s;
1053 fdmaskp[0].events = POLLIN;
1054 cc = poll(fdmaskp, 1, timeout);
1055 if (cc < 0) {
1056 if (errno != EINTR) {
1057 warn("poll");
1058 sleep(1);
1059 }
1060 continue;
1061 } else if (cc == 0)
1062 continue;
1063
1064 m.msg_name = (caddr_t)&from;
1065 m.msg_namelen = sizeof(from);
1066 memset(&iov, 0, sizeof(iov));
1067 iov[0].iov_base = (caddr_t)packet;
1068 iov[0].iov_len = packlen;
1069 m.msg_iov = iov;
1070 m.msg_iovlen = 1;
1071 cm = (struct cmsghdr *)buf;
1072 m.msg_control = (caddr_t)buf;
1073 m.msg_controllen = sizeof(buf);
1074
1075 cc = recvmsg(s, &m, 0);
1076 if (cc < 0) {
1077 if (errno != EINTR) {
1078 warn("recvmsg");
1079 sleep(1);
1080 }
1081 continue;
1082 } else if (cc == 0) {
1083 int mtu;
1084
1085 /*
1086 * receive control messages only. Process the
1087 * exceptions (currently the only possiblity is
1088 * a path MTU notification.)
1089 */
1090 if ((mtu = get_pathmtu(&m)) > 0) {
1091 if ((options & F_VERBOSE) != 0) {
1092 printf("new path MTU (%d) is "
1093 "notified\n", mtu);
1094 }
1095 }
1096 continue;
1097 } else {
1098 /*
1099 * an ICMPv6 message (probably an echoreply) arrived.
1100 */
1101 pr_pack(packet, cc, &m);
1102 }
1103 if (npackets && nreceived >= npackets)
1104 break;
1105 }
1106 summary();
1107 exit(nreceived == 0);
1108 }
1109
1110 void
1111 onsignal(int sig)
1112 {
1113
1114 switch (sig) {
1115 case SIGALRM:
1116 seenalrm++;
1117 break;
1118 case SIGINT:
1119 seenint++;
1120 break;
1121 #ifdef SIGINFO
1122 case SIGINFO:
1123 seeninfo++;
1124 break;
1125 #endif
1126 }
1127 }
1128
1129 /*
1130 * retransmit --
1131 * This routine transmits another ping6.
1132 */
1133 void
1134 retransmit(void)
1135 {
1136 struct itimerval itimer;
1137
1138 if (pinger() == 0)
1139 return;
1140
1141 /*
1142 * If we're not transmitting any more packets, change the timer
1143 * to wait two round-trip times if we've received any packets or
1144 * ten seconds if we haven't.
1145 */
1146 #define MAXWAIT 10
1147 if (nreceived) {
1148 itimer.it_value.tv_sec = 2 * tmax / 1000;
1149 if (itimer.it_value.tv_sec == 0)
1150 itimer.it_value.tv_sec = 1;
1151 } else
1152 itimer.it_value.tv_sec = MAXWAIT;
1153 itimer.it_interval.tv_sec = 0;
1154 itimer.it_interval.tv_usec = 0;
1155 itimer.it_value.tv_usec = 0;
1156
1157 (void)signal(SIGALRM, onint);
1158 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1159 }
1160
1161 /*
1162 * pinger --
1163 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1164 * will be added on by the kernel. The ID field is our UNIX process ID,
1165 * and the sequence number is an ascending integer. The first 8 bytes
1166 * of the data portion are used to hold a UNIX "timeval" struct in VAX
1167 * byte-order, to compute the round-trip time.
1168 */
1169 size_t
1170 pingerlen(void)
1171 {
1172 size_t l;
1173
1174 if (options & F_FQDN)
1175 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1176 else if (options & F_FQDNOLD)
1177 l = ICMP6_NIQLEN;
1178 else if (options & F_NODEADDR)
1179 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1180 else if (options & F_SUPTYPES)
1181 l = ICMP6_NIQLEN;
1182 else
1183 l = ICMP6ECHOLEN + datalen;
1184
1185 return l;
1186 }
1187
1188 int
1189 pinger(void)
1190 {
1191 struct icmp6_hdr *icp;
1192 struct iovec iov[2];
1193 int i, cc;
1194 struct icmp6_nodeinfo *nip;
1195 int seq;
1196
1197 if (npackets && ntransmitted >= npackets)
1198 return(-1); /* no more transmission */
1199
1200 icp = (struct icmp6_hdr *)outpack;
1201 nip = (struct icmp6_nodeinfo *)outpack;
1202 memset(icp, 0, sizeof(*icp));
1203 icp->icmp6_cksum = 0;
1204 seq = ntransmitted++;
1205 CLR(seq % mx_dup_ck);
1206
1207 if (options & F_FQDN) {
1208 icp->icmp6_type = ICMP6_NI_QUERY;
1209 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1210 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1211 nip->ni_flags = htons(0);
1212
1213 memcpy(nip->icmp6_ni_nonce, nonce,
1214 sizeof(nip->icmp6_ni_nonce));
1215 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1216
1217 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1218 sizeof(dst.sin6_addr));
1219 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1220 datalen = 0;
1221 } else if (options & F_FQDNOLD) {
1222 /* packet format in 03 draft - no Subject data on queries */
1223 icp->icmp6_type = ICMP6_NI_QUERY;
1224 icp->icmp6_code = 0; /* code field is always 0 */
1225 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1226 nip->ni_flags = htons(0);
1227
1228 memcpy(nip->icmp6_ni_nonce, nonce,
1229 sizeof(nip->icmp6_ni_nonce));
1230 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1231
1232 cc = ICMP6_NIQLEN;
1233 datalen = 0;
1234 } else if (options & F_NODEADDR) {
1235 icp->icmp6_type = ICMP6_NI_QUERY;
1236 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1237 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1238 nip->ni_flags = naflags;
1239
1240 memcpy(nip->icmp6_ni_nonce, nonce,
1241 sizeof(nip->icmp6_ni_nonce));
1242 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1243
1244 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1245 sizeof(dst.sin6_addr));
1246 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1247 datalen = 0;
1248 } else if (options & F_SUPTYPES) {
1249 icp->icmp6_type = ICMP6_NI_QUERY;
1250 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1251 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1252 /* we support compressed bitmap */
1253 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1254
1255 memcpy(nip->icmp6_ni_nonce, nonce,
1256 sizeof(nip->icmp6_ni_nonce));
1257 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1258 cc = ICMP6_NIQLEN;
1259 datalen = 0;
1260 } else {
1261 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1262 icp->icmp6_code = 0;
1263 icp->icmp6_id = htons(ident);
1264 icp->icmp6_seq = ntohs(seq);
1265 if (timing) {
1266 struct timeval tv;
1267 struct tv32 *tv32;
1268 (void)gettimeofday(&tv, NULL);
1269 tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN];
1270 tv32->tv32_sec = htonl(tv.tv_sec);
1271 tv32->tv32_usec = htonl(tv.tv_usec);
1272 }
1273 cc = ICMP6ECHOLEN + datalen;
1274 }
1275
1276 #ifdef DIAGNOSTIC
1277 if (pingerlen() != cc)
1278 errx(1, "internal error; length mismatch");
1279 #endif
1280
1281 smsghdr.msg_name = (caddr_t)&dst;
1282 smsghdr.msg_namelen = sizeof(dst);
1283 memset(&iov, 0, sizeof(iov));
1284 iov[0].iov_base = (caddr_t)outpack;
1285 iov[0].iov_len = cc;
1286 smsghdr.msg_iov = iov;
1287 smsghdr.msg_iovlen = 1;
1288
1289 i = sendmsg(s, &smsghdr, 0);
1290
1291 if (i < 0 || i != cc) {
1292 if (i < 0)
1293 warn("sendmsg");
1294 (void)printf("ping6: wrote %s %d chars, ret=%d\n",
1295 hostname, cc, i);
1296 }
1297 if (!(options & F_QUIET) && options & F_FLOOD)
1298 (void)write(STDOUT_FILENO, &DOT, 1);
1299
1300 return(0);
1301 }
1302
1303 int
1304 myechoreply(const struct icmp6_hdr *icp)
1305 {
1306 if (ntohs(icp->icmp6_id) == ident)
1307 return 1;
1308 else
1309 return 0;
1310 }
1311
1312 int
1313 mynireply(const struct icmp6_nodeinfo *nip)
1314 {
1315 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1316 nonce + sizeof(u_int16_t),
1317 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1318 return 1;
1319 else
1320 return 0;
1321 }
1322
1323 char *
1324 dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf,
1325 size_t bufsiz)
1326 {
1327 int i;
1328 const u_char *cp;
1329 char cresult[MAXDNAME + 1];
1330 const u_char *comp;
1331 int l;
1332
1333 i = 0; /* XXXGCC -Wuninitialized [sun2] */
1334
1335 cp = *sp;
1336 *buf = '\0';
1337
1338 if (cp >= ep)
1339 return NULL;
1340 while (cp < ep) {
1341 i = *cp;
1342 if (i == 0 || cp != *sp) {
1343 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1344 return NULL; /*result overrun*/
1345 }
1346 if (i == 0)
1347 break;
1348 cp++;
1349
1350 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1351 /* DNS compression */
1352 if (!base)
1353 return NULL;
1354
1355 comp = base + (i & 0x3f);
1356 if (dnsdecode(&comp, cp, base, cresult,
1357 sizeof(cresult)) == NULL)
1358 return NULL;
1359 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1360 return NULL; /*result overrun*/
1361 break;
1362 } else if ((i & 0x3f) == i) {
1363 if (i > ep - cp)
1364 return NULL; /*source overrun*/
1365 while (i-- > 0 && cp < ep) {
1366 l = snprintf(cresult, sizeof(cresult),
1367 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1368 if (l >= (int)sizeof(cresult) || l < 0)
1369 return NULL;
1370 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1371 return NULL; /*result overrun*/
1372 cp++;
1373 }
1374 } else
1375 return NULL; /*invalid label*/
1376 }
1377 if (i != 0)
1378 return NULL; /*not terminated*/
1379 cp++;
1380 *sp = cp;
1381 return buf;
1382 }
1383
1384 /*
1385 * pr_pack --
1386 * Print out the packet, if it came from us. This logic is necessary
1387 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1388 * which arrive ('tis only fair). This permits multiple copies of this
1389 * program to be run without having intermingled output (or statistics!).
1390 */
1391 void
1392 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1393 {
1394 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1395 struct icmp6_hdr *icp;
1396 struct icmp6_nodeinfo *ni;
1397 int i;
1398 int hoplim;
1399 struct sockaddr *from;
1400 int fromlen;
1401 u_char *cp = NULL, *dp, *end = buf + cc;
1402 struct in6_pktinfo *pktinfo = NULL;
1403 struct timeval tv, tp;
1404 struct tv32 *tpp;
1405 double triptime = 0;
1406 int dupflag;
1407 size_t off;
1408 int oldfqdn;
1409 u_int16_t seq;
1410 char dnsname[MAXDNAME + 1];
1411
1412 (void)gettimeofday(&tv, NULL);
1413
1414 if (!mhdr || !mhdr->msg_name ||
1415 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1416 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1417 if (options & F_VERBOSE)
1418 warnx("invalid peername");
1419 return;
1420 }
1421 from = (struct sockaddr *)mhdr->msg_name;
1422 fromlen = mhdr->msg_namelen;
1423 if (cc < (int)sizeof(struct icmp6_hdr)) {
1424 if (options & F_VERBOSE)
1425 warnx("packet too short (%d bytes) from %s", cc,
1426 pr_addr(from, fromlen));
1427 return;
1428 }
1429 icp = (struct icmp6_hdr *)buf;
1430 ni = (struct icmp6_nodeinfo *)buf;
1431 off = 0;
1432
1433 if ((hoplim = get_hoplim(mhdr)) == -1) {
1434 warnx("failed to get receiving hop limit");
1435 return;
1436 }
1437 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1438 warnx("failed to get receiving packet information");
1439 return;
1440 }
1441
1442 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1443 seq = ntohs(icp->icmp6_seq);
1444 ++nreceived;
1445 if (timing) {
1446 tpp = (struct tv32 *)(icp + 1);
1447 tp.tv_sec = ntohl(tpp->tv32_sec);
1448 tp.tv_usec = ntohl(tpp->tv32_usec);
1449 tvsub(&tv, &tp);
1450 triptime = ((double)tv.tv_sec) * 1000.0 +
1451 ((double)tv.tv_usec) / 1000.0;
1452 tsum += triptime;
1453 tsumsq += triptime * triptime;
1454 if (triptime < tmin)
1455 tmin = triptime;
1456 if (triptime > tmax)
1457 tmax = triptime;
1458 }
1459
1460 if (TST(seq % mx_dup_ck)) {
1461 ++nrepeats;
1462 --nreceived;
1463 dupflag = 1;
1464 } else {
1465 SET(seq % mx_dup_ck);
1466 dupflag = 0;
1467 }
1468
1469 if (options & F_QUIET)
1470 return;
1471
1472 if (options & F_FLOOD)
1473 (void)write(STDOUT_FILENO, &BSPACE, 1);
1474 else {
1475 (void)printf("%d bytes from %s, icmp_seq=%u", cc,
1476 pr_addr(from, fromlen), seq);
1477 (void)printf(" hlim=%d", hoplim);
1478 if ((options & F_VERBOSE) != 0) {
1479 struct sockaddr_in6 dstsa;
1480
1481 memset(&dstsa, 0, sizeof(dstsa));
1482 dstsa.sin6_family = AF_INET6;
1483 #ifdef SIN6_LEN
1484 dstsa.sin6_len = sizeof(dstsa);
1485 #endif
1486 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1487 dstsa.sin6_addr = pktinfo->ipi6_addr;
1488 (void)printf(" dst=%s",
1489 pr_addr((struct sockaddr *)&dstsa,
1490 sizeof(dstsa)));
1491 }
1492 if (timing)
1493 (void)printf(" time=%.3f ms", triptime);
1494 if (dupflag)
1495 (void)printf("(DUP!)");
1496 /* check the data */
1497 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1498 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1499 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1500 if (*cp != *dp) {
1501 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
1502 break;
1503 }
1504 }
1505 }
1506 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1507 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce);
1508 ++nreceived;
1509 if (TST(seq % mx_dup_ck)) {
1510 ++nrepeats;
1511 --nreceived;
1512 dupflag = 1;
1513 } else {
1514 SET(seq % mx_dup_ck);
1515 dupflag = 0;
1516 }
1517
1518 if (options & F_QUIET)
1519 return;
1520
1521 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1522
1523 switch (ntohs(ni->ni_code)) {
1524 case ICMP6_NI_SUCCESS:
1525 break;
1526 case ICMP6_NI_REFUSED:
1527 printf("refused, type 0x%x", ntohs(ni->ni_type));
1528 goto fqdnend;
1529 case ICMP6_NI_UNKNOWN:
1530 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1531 goto fqdnend;
1532 default:
1533 printf("unknown code 0x%x, type 0x%x",
1534 ntohs(ni->ni_code), ntohs(ni->ni_type));
1535 goto fqdnend;
1536 }
1537
1538 switch (ntohs(ni->ni_qtype)) {
1539 case NI_QTYPE_NOOP:
1540 printf("NodeInfo NOOP");
1541 break;
1542 case NI_QTYPE_SUPTYPES:
1543 pr_suptypes(ni, end - (u_char *)ni);
1544 break;
1545 case NI_QTYPE_NODEADDR:
1546 pr_nodeaddr(ni, end - (u_char *)ni);
1547 break;
1548 case NI_QTYPE_FQDN:
1549 default: /* XXX: for backward compatibility */
1550 cp = (u_char *)ni + ICMP6_NIRLEN;
1551 if (buf[off + ICMP6_NIRLEN] ==
1552 cc - off - ICMP6_NIRLEN - 1)
1553 oldfqdn = 1;
1554 else
1555 oldfqdn = 0;
1556 if (oldfqdn) {
1557 cp++; /* skip length */
1558 while (cp < end) {
1559 safeputc(*cp & 0xff);
1560 cp++;
1561 }
1562 } else {
1563 i = 0;
1564 while (cp < end) {
1565 if (dnsdecode((const u_char **)&cp, end,
1566 (const u_char *)(ni + 1), dnsname,
1567 sizeof(dnsname)) == NULL) {
1568 printf("???");
1569 break;
1570 }
1571 /*
1572 * name-lookup special handling for
1573 * truncated name
1574 */
1575 if (cp + 1 <= end && !*cp &&
1576 strlen(dnsname) > 0) {
1577 dnsname[strlen(dnsname) - 1] = '\0';
1578 cp++;
1579 }
1580 printf("%s%s", i > 0 ? "," : "",
1581 dnsname);
1582 }
1583 }
1584 if (options & F_VERBOSE) {
1585 int32_t ttl;
1586 int comma = 0;
1587
1588 (void)printf(" ("); /*)*/
1589
1590 switch (ni->ni_code) {
1591 case ICMP6_NI_REFUSED:
1592 (void)printf("refused");
1593 comma++;
1594 break;
1595 case ICMP6_NI_UNKNOWN:
1596 (void)printf("unknown qtype");
1597 comma++;
1598 break;
1599 }
1600
1601 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1602 /* case of refusion, unknown */
1603 /*(*/
1604 putchar(')');
1605 goto fqdnend;
1606 }
1607 ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]);
1608 if (comma)
1609 printf(",");
1610 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1611 (void)printf("TTL=%d:meaningless",
1612 (int)ttl);
1613 } else {
1614 if (ttl < 0) {
1615 (void)printf("TTL=%d:invalid",
1616 ttl);
1617 } else
1618 (void)printf("TTL=%d", ttl);
1619 }
1620 comma++;
1621
1622 if (oldfqdn) {
1623 if (comma)
1624 printf(",");
1625 printf("03 draft");
1626 comma++;
1627 } else {
1628 cp = (u_char *)ni + ICMP6_NIRLEN;
1629 if (cp == end) {
1630 if (comma)
1631 printf(",");
1632 printf("no name");
1633 comma++;
1634 }
1635 }
1636
1637 if (buf[off + ICMP6_NIRLEN] !=
1638 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1639 if (comma)
1640 printf(",");
1641 (void)printf("invalid namelen:%d/%lu",
1642 buf[off + ICMP6_NIRLEN],
1643 (u_long)cc - off - ICMP6_NIRLEN - 1);
1644 comma++;
1645 }
1646 /*(*/
1647 putchar(')');
1648 }
1649 fqdnend:
1650 ;
1651 }
1652 } else {
1653 /* We've got something other than an ECHOREPLY */
1654 if (!(options & F_VERBOSE))
1655 return;
1656 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1657 pr_icmph(icp, end);
1658 }
1659
1660 if (!(options & F_FLOOD)) {
1661 (void)putchar('\n');
1662 if (options & F_VERBOSE)
1663 pr_exthdrs(mhdr);
1664 (void)fflush(stdout);
1665 }
1666 #undef safeputc
1667 }
1668
1669 void
1670 pr_exthdrs(struct msghdr *mhdr)
1671 {
1672 struct cmsghdr *cm;
1673
1674 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1675 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1676 if (cm->cmsg_level != IPPROTO_IPV6)
1677 continue;
1678
1679 switch (cm->cmsg_type) {
1680 case IPV6_HOPOPTS:
1681 printf(" HbH Options: ");
1682 pr_ip6opt(CMSG_DATA(cm));
1683 break;
1684 case IPV6_DSTOPTS:
1685 #ifdef IPV6_RTHDRDSTOPTS
1686 case IPV6_RTHDRDSTOPTS:
1687 #endif
1688 printf(" Dst Options: ");
1689 pr_ip6opt(CMSG_DATA(cm));
1690 break;
1691 case IPV6_RTHDR:
1692 printf(" Routing: ");
1693 pr_rthdr(CMSG_DATA(cm));
1694 break;
1695 }
1696 }
1697 }
1698
1699 void
1700 pr_ip6opt(void *extbuf)
1701 {
1702 struct ip6_hbh *ext;
1703 int currentlen;
1704 u_int8_t type;
1705 size_t extlen;
1706 socklen_t len;
1707 void *databuf;
1708 size_t offset;
1709 u_int16_t value2;
1710 u_int32_t value4;
1711
1712 ext = (struct ip6_hbh *)extbuf;
1713 extlen = (ext->ip6h_len + 1) * 8;
1714 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1715 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1716
1717 currentlen = 0;
1718 while (1) {
1719 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1720 &type, &len, &databuf);
1721 if (currentlen == -1)
1722 break;
1723 switch (type) {
1724 /*
1725 * Note that inet6_opt_next automatically skips any padding
1726 * optins.
1727 */
1728 case IP6OPT_JUMBO:
1729 offset = 0;
1730 offset = inet6_opt_get_val(databuf, offset,
1731 &value4, sizeof(value4));
1732 printf(" Jumbo Payload Opt: Length %u\n",
1733 (u_int32_t)ntohl(value4));
1734 break;
1735 case IP6OPT_ROUTER_ALERT:
1736 offset = 0;
1737 offset = inet6_opt_get_val(databuf, offset,
1738 &value2, sizeof(value2));
1739 printf(" Router Alert Opt: Type %u\n",
1740 ntohs(value2));
1741 break;
1742 default:
1743 printf(" Received Opt %u len %lu\n",
1744 type, (unsigned long)len);
1745 break;
1746 }
1747 }
1748 return;
1749 }
1750
1751 void
1752 pr_rthdr(void *extbuf)
1753 {
1754 struct in6_addr *in6;
1755 char ntopbuf[INET6_ADDRSTRLEN];
1756 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1757 int i, segments;
1758
1759 /* print fixed part of the header */
1760 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1761 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1762 if ((segments = inet6_rth_segments(extbuf)) >= 0)
1763 printf("%d segments, ", segments);
1764 else
1765 printf("segments unknown, ");
1766 printf("%d left\n", rh->ip6r_segleft);
1767
1768 for (i = 0; i < segments; i++) {
1769 in6 = inet6_rth_getaddr(extbuf, i);
1770 if (in6 == NULL)
1771 printf(" [%d]<NULL>\n", i);
1772 else {
1773 if (!inet_ntop(AF_INET6, in6, ntopbuf,
1774 sizeof(ntopbuf)))
1775 strlcpy(ntopbuf, "?", sizeof(ntopbuf));
1776 printf(" [%d]%s\n", i, ntopbuf);
1777 }
1778 }
1779
1780 return;
1781
1782 }
1783
1784 int
1785 pr_bitrange(u_int32_t v, int soff, int ii)
1786 {
1787 int off;
1788 int i;
1789
1790 off = 0;
1791 while (off < 32) {
1792 /* shift till we have 0x01 */
1793 if ((v & 0x01) == 0) {
1794 if (ii > 1)
1795 printf("-%u", soff + off - 1);
1796 ii = 0;
1797 switch (v & 0x0f) {
1798 case 0x00:
1799 v >>= 4;
1800 off += 4;
1801 continue;
1802 case 0x08:
1803 v >>= 3;
1804 off += 3;
1805 continue;
1806 case 0x04: case 0x0c:
1807 v >>= 2;
1808 off += 2;
1809 continue;
1810 default:
1811 v >>= 1;
1812 off += 1;
1813 continue;
1814 }
1815 }
1816
1817 /* we have 0x01 with us */
1818 for (i = 0; i < 32 - off; i++) {
1819 if ((v & (0x01 << i)) == 0)
1820 break;
1821 }
1822 if (!ii)
1823 printf(" %u", soff + off);
1824 ii += i;
1825 v >>= i; off += i;
1826 }
1827 return ii;
1828 }
1829
1830 void
1831 pr_suptypes(struct icmp6_nodeinfo *ni /* ni->qtype must be SUPTYPES */,
1832 size_t nilen)
1833 {
1834 size_t clen;
1835 u_int32_t v;
1836 const u_char *cp, *end;
1837 u_int16_t cur;
1838 struct cbit {
1839 u_int16_t words; /*32bit count*/
1840 u_int16_t skip;
1841 } cbit;
1842 #define MAXQTYPES (1 << 16)
1843 size_t off;
1844 int b;
1845
1846 cp = (u_char *)(ni + 1);
1847 end = ((u_char *)ni) + nilen;
1848 cur = 0;
1849 b = 0;
1850
1851 printf("NodeInfo Supported Qtypes");
1852 if (options & F_VERBOSE) {
1853 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
1854 printf(", compressed bitmap");
1855 else
1856 printf(", raw bitmap");
1857 }
1858
1859 while (cp < end) {
1860 clen = (size_t)(end - cp);
1861 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
1862 if (clen == 0 || clen > MAXQTYPES / 8 ||
1863 clen % sizeof(v)) {
1864 printf("???");
1865 return;
1866 }
1867 } else {
1868 if (clen < sizeof(cbit) || clen % sizeof(v))
1869 return;
1870 memcpy(&cbit, cp, sizeof(cbit));
1871 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
1872 clen)
1873 return;
1874 cp += sizeof(cbit);
1875 clen = ntohs(cbit.words) * sizeof(v);
1876 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
1877 MAXQTYPES)
1878 return;
1879 }
1880
1881 for (off = 0; off < clen; off += sizeof(v)) {
1882 memcpy(&v, cp + off, sizeof(v));
1883 v = (u_int32_t)ntohl(v);
1884 b = pr_bitrange(v, (int)(cur + off * 8), b);
1885 }
1886 /* flush the remaining bits */
1887 b = pr_bitrange(0, (int)(cur + off * 8), b);
1888
1889 cp += clen;
1890 cur += clen * 8;
1891 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
1892 cur += ntohs(cbit.skip) * 32;
1893 }
1894 }
1895
1896 void
1897 pr_nodeaddr(struct icmp6_nodeinfo *ni, /* ni->qtype must be NODEADDR */
1898 int nilen)
1899 {
1900 u_char *cp = (u_char *)(ni + 1);
1901 char ntop_buf[INET6_ADDRSTRLEN];
1902 int withttl = 0;
1903
1904 nilen -= sizeof(struct icmp6_nodeinfo);
1905
1906 if (options & F_VERBOSE) {
1907 switch (ni->ni_code) {
1908 case ICMP6_NI_REFUSED:
1909 (void)printf("refused");
1910 break;
1911 case ICMP6_NI_UNKNOWN:
1912 (void)printf("unknown qtype");
1913 break;
1914 }
1915 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
1916 (void)printf(" truncated");
1917 }
1918 putchar('\n');
1919 if (nilen <= 0)
1920 printf(" no address\n");
1921
1922 /*
1923 * In icmp-name-lookups 05 and later, TTL of each returned address
1924 * is contained in the resposne. We try to detect the version
1925 * by the length of the data, but note that the detection algorithm
1926 * is incomplete. We assume the latest draft by default.
1927 */
1928 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
1929 withttl = 1;
1930 while (nilen > 0) {
1931 u_int32_t ttl = 0;
1932
1933 if (withttl) {
1934 /* XXX: alignment? */
1935 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp);
1936 cp += sizeof(u_int32_t);
1937 nilen -= sizeof(u_int32_t);
1938 }
1939
1940 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
1941 NULL)
1942 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
1943 printf(" %s", ntop_buf);
1944 if (withttl) {
1945 if (ttl == 0xffffffff) {
1946 /*
1947 * XXX: can this convention be applied to all
1948 * type of TTL (i.e. non-ND TTL)?
1949 */
1950 printf("(TTL=infty)");
1951 }
1952 else
1953 printf("(TTL=%u)", ttl);
1954 }
1955 putchar('\n');
1956
1957 nilen -= sizeof(struct in6_addr);
1958 cp += sizeof(struct in6_addr);
1959 }
1960 }
1961
1962 int
1963 get_hoplim(struct msghdr *mhdr)
1964 {
1965 struct cmsghdr *cm;
1966
1967 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1968 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1969 if (cm->cmsg_len == 0)
1970 return(-1);
1971
1972 if (cm->cmsg_level == IPPROTO_IPV6 &&
1973 cm->cmsg_type == IPV6_HOPLIMIT &&
1974 cm->cmsg_len == CMSG_LEN(sizeof(int)))
1975 return(*(int *)CMSG_DATA(cm));
1976 }
1977
1978 return(-1);
1979 }
1980
1981 struct in6_pktinfo *
1982 get_rcvpktinfo(struct msghdr *mhdr)
1983 {
1984 struct cmsghdr *cm;
1985
1986 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1987 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1988 if (cm->cmsg_len == 0)
1989 return(NULL);
1990
1991 if (cm->cmsg_level == IPPROTO_IPV6 &&
1992 cm->cmsg_type == IPV6_PKTINFO &&
1993 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
1994 return((struct in6_pktinfo *)CMSG_DATA(cm));
1995 }
1996
1997 return(NULL);
1998 }
1999
2000 int
2001 get_pathmtu(struct msghdr *mhdr)
2002 {
2003 #ifdef IPV6_RECVPATHMTU
2004 struct cmsghdr *cm;
2005 struct ip6_mtuinfo *mtuctl = NULL;
2006
2007 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2008 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2009 if (cm->cmsg_len == 0)
2010 return(0);
2011
2012 if (cm->cmsg_level == IPPROTO_IPV6 &&
2013 cm->cmsg_type == IPV6_PATHMTU &&
2014 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2015 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm);
2016
2017 /*
2018 * If the notified destination is different from
2019 * the one we are pinging, just ignore the info.
2020 * We check the scope ID only when both notified value
2021 * and our own value have non-0 values, because we may
2022 * have used the default scope zone ID for sending,
2023 * in which case the scope ID value is 0.
2024 */
2025 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr,
2026 &dst.sin6_addr) ||
2027 (mtuctl->ip6m_addr.sin6_scope_id &&
2028 dst.sin6_scope_id &&
2029 mtuctl->ip6m_addr.sin6_scope_id !=
2030 dst.sin6_scope_id)) {
2031 if ((options & F_VERBOSE) != 0) {
2032 printf("path MTU for %s is notified. "
2033 "(ignored)\n",
2034 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr,
2035 sizeof(mtuctl->ip6m_addr)));
2036 }
2037 return(0);
2038 }
2039
2040 /*
2041 * Ignore an invalid MTU. XXX: can we just believe
2042 * the kernel check?
2043 */
2044 if (mtuctl->ip6m_mtu < IPV6_MMTU)
2045 return(0);
2046
2047 /* notification for our destination. return the MTU. */
2048 return((int)mtuctl->ip6m_mtu);
2049 }
2050 }
2051 #endif
2052 return(0);
2053 }
2054
2055 /*
2056 * tvsub --
2057 * Subtract 2 timeval structs: out = out - in. Out is assumed to
2058 * be >= in.
2059 */
2060 void
2061 tvsub(struct timeval *out, struct timeval *in)
2062 {
2063 if ((out->tv_usec -= in->tv_usec) < 0) {
2064 --out->tv_sec;
2065 out->tv_usec += 1000000;
2066 }
2067 out->tv_sec -= in->tv_sec;
2068 }
2069
2070 /*
2071 * onint --
2072 * SIGINT handler.
2073 */
2074 /* ARGSUSED */
2075 void
2076 onint(int notused)
2077 {
2078 summary();
2079
2080 (void)signal(SIGINT, SIG_DFL);
2081 (void)kill(getpid(), SIGINT);
2082
2083 /* NOTREACHED */
2084 exit(1);
2085 }
2086
2087 /*
2088 * summary --
2089 * Print out statistics.
2090 */
2091 void
2092 summary(void)
2093 {
2094
2095 (void)printf("\n--- %s ping6 statistics ---\n", hostname);
2096 (void)printf("%ld packets transmitted, ", ntransmitted);
2097 (void)printf("%ld packets received, ", nreceived);
2098 if (nrepeats)
2099 (void)printf("+%ld duplicates, ", nrepeats);
2100 if (ntransmitted) {
2101 if (nreceived > ntransmitted)
2102 (void)printf("-- somebody's duplicating packets!");
2103 else
2104 (void)printf("%.1f%% packet loss",
2105 ((((double)ntransmitted - nreceived) * 100.0) /
2106 ntransmitted));
2107 }
2108 (void)putchar('\n');
2109 if (nreceived && timing) {
2110 /* Only display average to microseconds */
2111 double num = nreceived + nrepeats;
2112 double avg = tsum / num;
2113 double dev = sqrt((tsumsq - num * avg * avg) / (num - 1));
2114 (void)printf(
2115 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2116 tmin, avg, tmax, dev);
2117 (void)fflush(stdout);
2118 }
2119 (void)fflush(stdout);
2120 }
2121
2122 /*subject type*/
2123 static const char *niqcode[] = {
2124 "IPv6 address",
2125 "DNS label", /*or empty*/
2126 "IPv4 address",
2127 };
2128
2129 /*result code*/
2130 static const char *nircode[] = {
2131 "Success", "Refused", "Unknown",
2132 };
2133
2134
2135 /*
2136 * pr_icmph --
2137 * Print a descriptive string about an ICMP header.
2138 */
2139 void
2140 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2141 {
2142 char ntop_buf[INET6_ADDRSTRLEN];
2143 struct nd_redirect *red;
2144 struct icmp6_nodeinfo *ni;
2145 char dnsname[MAXDNAME + 1];
2146 const u_char *cp;
2147 size_t l;
2148
2149 switch (icp->icmp6_type) {
2150 case ICMP6_DST_UNREACH:
2151 switch (icp->icmp6_code) {
2152 case ICMP6_DST_UNREACH_NOROUTE:
2153 (void)printf("No Route to Destination\n");
2154 break;
2155 case ICMP6_DST_UNREACH_ADMIN:
2156 (void)printf("Destination Administratively "
2157 "Unreachable\n");
2158 break;
2159 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2160 (void)printf("Destination Unreachable Beyond Scope\n");
2161 break;
2162 case ICMP6_DST_UNREACH_ADDR:
2163 (void)printf("Destination Host Unreachable\n");
2164 break;
2165 case ICMP6_DST_UNREACH_NOPORT:
2166 (void)printf("Destination Port Unreachable\n");
2167 break;
2168 default:
2169 (void)printf("Destination Unreachable, Bad Code: %d\n",
2170 icp->icmp6_code);
2171 break;
2172 }
2173 /* Print returned IP header information */
2174 pr_retip((struct ip6_hdr *)(icp + 1), end);
2175 break;
2176 case ICMP6_PACKET_TOO_BIG:
2177 (void)printf("Packet too big mtu = %d\n",
2178 (int)ntohl(icp->icmp6_mtu));
2179 pr_retip((struct ip6_hdr *)(icp + 1), end);
2180 break;
2181 case ICMP6_TIME_EXCEEDED:
2182 switch (icp->icmp6_code) {
2183 case ICMP6_TIME_EXCEED_TRANSIT:
2184 (void)printf("Time to live exceeded\n");
2185 break;
2186 case ICMP6_TIME_EXCEED_REASSEMBLY:
2187 (void)printf("Frag reassembly time exceeded\n");
2188 break;
2189 default:
2190 (void)printf("Time exceeded, Bad Code: %d\n",
2191 icp->icmp6_code);
2192 break;
2193 }
2194 pr_retip((struct ip6_hdr *)(icp + 1), end);
2195 break;
2196 case ICMP6_PARAM_PROB:
2197 (void)printf("Parameter problem: ");
2198 switch (icp->icmp6_code) {
2199 case ICMP6_PARAMPROB_HEADER:
2200 (void)printf("Erroneous Header ");
2201 break;
2202 case ICMP6_PARAMPROB_NEXTHEADER:
2203 (void)printf("Unknown Nextheader ");
2204 break;
2205 case ICMP6_PARAMPROB_OPTION:
2206 (void)printf("Unrecognized Option ");
2207 break;
2208 default:
2209 (void)printf("Bad code(%d) ", icp->icmp6_code);
2210 break;
2211 }
2212 (void)printf("pointer = 0x%02x\n",
2213 (u_int32_t)ntohl(icp->icmp6_pptr));
2214 pr_retip((struct ip6_hdr *)(icp + 1), end);
2215 break;
2216 case ICMP6_ECHO_REQUEST:
2217 (void)printf("Echo Request");
2218 /* XXX ID + Seq + Data */
2219 break;
2220 case ICMP6_ECHO_REPLY:
2221 (void)printf("Echo Reply");
2222 /* XXX ID + Seq + Data */
2223 break;
2224 case ICMP6_MEMBERSHIP_QUERY:
2225 (void)printf("Listener Query");
2226 break;
2227 case ICMP6_MEMBERSHIP_REPORT:
2228 (void)printf("Listener Report");
2229 break;
2230 case ICMP6_MEMBERSHIP_REDUCTION:
2231 (void)printf("Listener Done");
2232 break;
2233 case ND_ROUTER_SOLICIT:
2234 (void)printf("Router Solicitation");
2235 break;
2236 case ND_ROUTER_ADVERT:
2237 (void)printf("Router Advertisement");
2238 break;
2239 case ND_NEIGHBOR_SOLICIT:
2240 (void)printf("Neighbor Solicitation");
2241 break;
2242 case ND_NEIGHBOR_ADVERT:
2243 (void)printf("Neighbor Advertisement");
2244 break;
2245 case ND_REDIRECT:
2246 red = (struct nd_redirect *)icp;
2247 (void)printf("Redirect\n");
2248 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2249 sizeof(ntop_buf)))
2250 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2251 (void)printf("Destination: %s", ntop_buf);
2252 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2253 sizeof(ntop_buf)))
2254 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2255 (void)printf(" New Target: %s", ntop_buf);
2256 break;
2257 case ICMP6_NI_QUERY:
2258 (void)printf("Node Information Query");
2259 /* XXX ID + Seq + Data */
2260 ni = (struct icmp6_nodeinfo *)icp;
2261 l = end - (u_char *)(ni + 1);
2262 printf(", ");
2263 switch (ntohs(ni->ni_qtype)) {
2264 case NI_QTYPE_NOOP:
2265 (void)printf("NOOP");
2266 break;
2267 case NI_QTYPE_SUPTYPES:
2268 (void)printf("Supported qtypes");
2269 break;
2270 case NI_QTYPE_FQDN:
2271 (void)printf("DNS name");
2272 break;
2273 case NI_QTYPE_NODEADDR:
2274 (void)printf("nodeaddr");
2275 break;
2276 case NI_QTYPE_IPV4ADDR:
2277 (void)printf("IPv4 nodeaddr");
2278 break;
2279 default:
2280 (void)printf("unknown qtype");
2281 break;
2282 }
2283 if (options & F_VERBOSE) {
2284 switch (ni->ni_code) {
2285 case ICMP6_NI_SUBJ_IPV6:
2286 if (l == sizeof(struct in6_addr) &&
2287 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2288 sizeof(ntop_buf)) != NULL) {
2289 (void)printf(", subject=%s(%s)",
2290 niqcode[ni->ni_code], ntop_buf);
2291 } else {
2292 #if 1
2293 /* backward compat to -W */
2294 (void)printf(", oldfqdn");
2295 #else
2296 (void)printf(", invalid");
2297 #endif
2298 }
2299 break;
2300 case ICMP6_NI_SUBJ_FQDN:
2301 if (end == (u_char *)(ni + 1)) {
2302 (void)printf(", no subject");
2303 break;
2304 }
2305 printf(", subject=%s", niqcode[ni->ni_code]);
2306 cp = (const u_char *)(ni + 1);
2307 if (dnsdecode(&cp, end, NULL, dnsname,
2308 sizeof(dnsname)) != NULL)
2309 printf("(%s)", dnsname);
2310 else
2311 printf("(invalid)");
2312 break;
2313 case ICMP6_NI_SUBJ_IPV4:
2314 if (l == sizeof(struct in_addr) &&
2315 inet_ntop(AF_INET, ni + 1, ntop_buf,
2316 sizeof(ntop_buf)) != NULL) {
2317 (void)printf(", subject=%s(%s)",
2318 niqcode[ni->ni_code], ntop_buf);
2319 } else
2320 (void)printf(", invalid");
2321 break;
2322 default:
2323 (void)printf(", invalid");
2324 break;
2325 }
2326 }
2327 break;
2328 case ICMP6_NI_REPLY:
2329 (void)printf("Node Information Reply");
2330 /* XXX ID + Seq + Data */
2331 ni = (struct icmp6_nodeinfo *)icp;
2332 printf(", ");
2333 switch (ntohs(ni->ni_qtype)) {
2334 case NI_QTYPE_NOOP:
2335 (void)printf("NOOP");
2336 break;
2337 case NI_QTYPE_SUPTYPES:
2338 (void)printf("Supported qtypes");
2339 break;
2340 case NI_QTYPE_FQDN:
2341 (void)printf("DNS name");
2342 break;
2343 case NI_QTYPE_NODEADDR:
2344 (void)printf("nodeaddr");
2345 break;
2346 case NI_QTYPE_IPV4ADDR:
2347 (void)printf("IPv4 nodeaddr");
2348 break;
2349 default:
2350 (void)printf("unknown qtype");
2351 break;
2352 }
2353 if (options & F_VERBOSE) {
2354 if (ni->ni_code >= sizeof(nircode) / sizeof(nircode[0]))
2355 printf(", invalid");
2356 else
2357 printf(", %s", nircode[ni->ni_code]);
2358 }
2359 break;
2360 default:
2361 (void)printf("Bad ICMP type: %d", icp->icmp6_type);
2362 }
2363 }
2364
2365 /*
2366 * pr_iph --
2367 * Print an IP6 header.
2368 */
2369 void
2370 pr_iph(struct ip6_hdr *ip6)
2371 {
2372 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2373 u_int8_t tc;
2374 char ntop_buf[INET6_ADDRSTRLEN];
2375
2376 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2377 tc = (tc >> 4) & 0x0f;
2378 tc |= (ip6->ip6_vfc << 4);
2379
2380 printf("Vr TC Flow Plen Nxt Hlim\n");
2381 printf(" %1x %02x %05x %04x %02x %02x\n",
2382 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2383 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2384 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2385 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2386 printf("%s->", ntop_buf);
2387 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2388 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2389 printf("%s\n", ntop_buf);
2390 }
2391
2392 /*
2393 * pr_addr --
2394 * Return an ascii host address as a dotted quad and optionally with
2395 * a hostname.
2396 */
2397 const char *
2398 pr_addr(struct sockaddr *addr, int addrlen)
2399 {
2400 static char buf[NI_MAXHOST];
2401 int flag = 0;
2402
2403 if ((options & F_HOSTNAME) == 0)
2404 flag |= NI_NUMERICHOST;
2405
2406 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0)
2407 return (buf);
2408 else
2409 return "?";
2410 }
2411
2412 /*
2413 * pr_retip --
2414 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2415 */
2416 void
2417 pr_retip(struct ip6_hdr *ip6, u_char *end)
2418 {
2419 u_char *cp = (u_char *)ip6, nh;
2420 int hlen;
2421
2422 if (end - (u_char *)ip6 < (intptr_t)sizeof(*ip6)) {
2423 printf("IP6");
2424 goto trunc;
2425 }
2426 pr_iph(ip6);
2427 hlen = sizeof(*ip6);
2428
2429 nh = ip6->ip6_nxt;
2430 cp += hlen;
2431 while (end - cp >= 8) {
2432 switch (nh) {
2433 case IPPROTO_HOPOPTS:
2434 printf("HBH ");
2435 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2436 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2437 break;
2438 case IPPROTO_DSTOPTS:
2439 printf("DSTOPT ");
2440 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2441 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2442 break;
2443 case IPPROTO_FRAGMENT:
2444 printf("FRAG ");
2445 hlen = sizeof(struct ip6_frag);
2446 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2447 break;
2448 case IPPROTO_ROUTING:
2449 printf("RTHDR ");
2450 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2451 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2452 break;
2453 #ifdef IPSEC
2454 case IPPROTO_AH:
2455 printf("AH ");
2456 hlen = (((struct ah *)cp)->ah_len+2) << 2;
2457 nh = ((struct ah *)cp)->ah_nxt;
2458 break;
2459 #endif
2460 case IPPROTO_ICMPV6:
2461 printf("ICMP6: type = %d, code = %d\n",
2462 *cp, *(cp + 1));
2463 return;
2464 case IPPROTO_ESP:
2465 printf("ESP\n");
2466 return;
2467 case IPPROTO_TCP:
2468 printf("TCP: from port %u, to port %u (decimal)\n",
2469 (*cp * 256 + *(cp + 1)),
2470 (*(cp + 2) * 256 + *(cp + 3)));
2471 return;
2472 case IPPROTO_UDP:
2473 printf("UDP: from port %u, to port %u (decimal)\n",
2474 (*cp * 256 + *(cp + 1)),
2475 (*(cp + 2) * 256 + *(cp + 3)));
2476 return;
2477 default:
2478 printf("Unknown Header(%d)\n", nh);
2479 return;
2480 }
2481
2482 if ((cp += hlen) >= end)
2483 goto trunc;
2484 }
2485 if (end - cp < 8)
2486 goto trunc;
2487
2488 putchar('\n');
2489 return;
2490
2491 trunc:
2492 printf("...\n");
2493 return;
2494 }
2495
2496 void
2497 fill(char *bp, char *patp)
2498 {
2499 int ii, jj, kk;
2500 int pat[16];
2501 char *cp;
2502
2503 for (cp = patp; *cp; cp++)
2504 if (!isxdigit((unsigned char)*cp))
2505 errx(1, "patterns must be specified as hex digits");
2506 ii = sscanf(patp,
2507 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2508 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2509 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2510 &pat[13], &pat[14], &pat[15]);
2511
2512 /* xxx */
2513 if (ii > 0)
2514 for (kk = 0;
2515 kk <= (int)(MAXDATALEN - (8 + sizeof(struct tv32) + ii));
2516 kk += ii)
2517 for (jj = 0; jj < ii; ++jj)
2518 bp[jj + kk] = pat[jj];
2519 if (!(options & F_QUIET)) {
2520 (void)printf("PATTERN: 0x");
2521 for (jj = 0; jj < ii; ++jj)
2522 (void)printf("%02x", bp[jj] & 0xFF);
2523 (void)printf("\n");
2524 }
2525 }
2526
2527 #ifdef IPSEC
2528 #ifdef IPSEC_POLICY_IPSEC
2529 int
2530 setpolicy(int so, char *policy)
2531 {
2532 char *buf;
2533
2534 if (policy == NULL)
2535 return 0; /* ignore */
2536
2537 buf = ipsec_set_policy(policy, strlen(policy));
2538 if (buf == NULL)
2539 errx(1, "%s", ipsec_strerror());
2540 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2541 ipsec_get_policylen(buf)) < 0)
2542 warnx("Unable to set IPsec policy");
2543 free(buf);
2544
2545 return 0;
2546 }
2547 #endif
2548 #endif
2549
2550 char *
2551 nigroup(char *name)
2552 {
2553 char *p;
2554 char *q;
2555 MD5_CTX ctxt;
2556 u_int8_t digest[16];
2557 u_int8_t c;
2558 size_t l;
2559 char hbuf[NI_MAXHOST];
2560 struct in6_addr in6;
2561
2562 p = strchr(name, '.');
2563 if (!p)
2564 p = name + strlen(name);
2565 l = p - name;
2566 if (l > 63 || l > sizeof(hbuf) - 1)
2567 return NULL; /*label too long*/
2568 strncpy(hbuf, name, l);
2569 hbuf[(int)l] = '\0';
2570
2571 for (q = name; *q; q++) {
2572 if (isupper(*(unsigned char *)q))
2573 *q = tolower(*(unsigned char *)q);
2574 }
2575
2576 /* generate 8 bytes of pseudo-random value. */
2577 memset(&ctxt, 0, sizeof(ctxt));
2578 MD5Init(&ctxt);
2579 c = l & 0xff;
2580 MD5Update(&ctxt, &c, sizeof(c));
2581 MD5Update(&ctxt, (unsigned char *)name, l);
2582 MD5Final(digest, &ctxt);
2583
2584 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
2585 return NULL; /*XXX*/
2586 bcopy(digest, &in6.s6_addr[12], 4);
2587
2588 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2589 return NULL;
2590
2591 return strdup(hbuf);
2592 }
2593
2594 void
2595 usage(void)
2596 {
2597 (void)fprintf(stderr,
2598 "usage: ping6 [-dfH"
2599 #ifdef IPV6_USE_MIN_MTU
2600 "m"
2601 #endif
2602 "nNqtvwW"
2603 #ifdef IPV6_REACHCONF
2604 "R"
2605 #endif
2606 #ifdef IPSEC
2607 #ifdef IPSEC_POLICY_IPSEC
2608 "] [-P policy"
2609 #else
2610 "AE"
2611 #endif
2612 #endif
2613 "] [-a [aAclsg]] [-b sockbufsiz] [-c count] \n"
2614 "\t[-I interface] [-i wait] [-l preload] [-p pattern] "
2615 "[-S sourceaddr]\n"
2616 "\t[-s packetsize] [-h hoplimit] [-g gateway] [hops...] host\n");
2617 exit(1);
2618 }
NetBSD on the FriendlyARM MINI2440