GC !__DragonFly__ section.
[dragonfly.git] / sbin / ping6 / ping6.c
CommitLineData
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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.
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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 $
7cee7052 34 * $DragonFly: src/sbin/ping6/ping6.c,v 1.7 2004/12/18 21:43:39 swildner Exp $
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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
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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#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
118#include <math.h>
119#endif
120#include <signal.h>
121#include <stdio.h>
122#include <stdlib.h>
123#include <string.h>
124#include <unistd.h>
125
126#ifdef IPSEC
127#include <netinet6/ah.h>
128#include <netinet6/ipsec.h>
129#endif
130
131#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
132#include <md5.h>
133#else
134#include "md5.h"
135#endif
136
137#define MAXPACKETLEN 131072
138#define IP6LEN 40
139#define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
140#define ICMP6ECHOTMLEN sizeof(struct timeval)
141#define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
142/* FQDN case, 64 bits of nonce + 32 bits ttl */
143#define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
144#define EXTRA 256 /* for AH and various other headers. weird. */
145#define DEFDATALEN ICMP6ECHOTMLEN
146#define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
147#define NROUTES 9 /* number of record route slots */
148
149#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
150#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
151#define SET(bit) (A(bit) |= B(bit))
152#define CLR(bit) (A(bit) &= (~B(bit)))
153#define TST(bit) (A(bit) & B(bit))
154
155#define F_FLOOD 0x0001
156#define F_INTERVAL 0x0002
157#define F_PINGFILLED 0x0008
158#define F_QUIET 0x0010
159#define F_RROUTE 0x0020
160#define F_SO_DEBUG 0x0040
161#define F_VERBOSE 0x0100
162#ifdef IPSEC
163#ifdef IPSEC_POLICY_IPSEC
164#define F_POLICY 0x0400
165#else
166#define F_AUTHHDR 0x0200
167#define F_ENCRYPT 0x0400
168#endif /*IPSEC_POLICY_IPSEC*/
169#endif /*IPSEC*/
170#define F_NODEADDR 0x0800
171#define F_FQDN 0x1000
172#define F_INTERFACE 0x2000
173#define F_SRCADDR 0x4000
174#ifdef IPV6_REACHCONF
175#define F_REACHCONF 0x8000
176#endif
177#define F_HOSTNAME 0x10000
178#define F_FQDNOLD 0x20000
179#define F_NIGROUP 0x40000
180#define F_SUPTYPES 0x80000
181#define F_NOMINMTU 0x100000
182#define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
183u_int options;
184
185#define IN6LEN sizeof(struct in6_addr)
186#define SA6LEN sizeof(struct sockaddr_in6)
187#define DUMMY_PORT 10101
188
189#define SIN6(s) ((struct sockaddr_in6 *)(s))
190
191/*
192 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
193 * number of received sequence numbers we can keep track of. Change 128
194 * to 8192 for complete accuracy...
195 */
196#define MAX_DUP_CHK (8 * 8192)
197int mx_dup_ck = MAX_DUP_CHK;
198char rcvd_tbl[MAX_DUP_CHK / 8];
199
200struct addrinfo *res;
201struct sockaddr_in6 dst; /* who to ping6 */
202struct sockaddr_in6 src; /* src addr of this packet */
203int datalen = DEFDATALEN;
204int s; /* socket file descriptor */
205u_char outpack[MAXPACKETLEN];
206char BSPACE = '\b'; /* characters written for flood */
207char DOT = '.';
208char *hostname;
209int ident; /* process id to identify our packets */
210u_int8_t nonce[8]; /* nonce field for node information */
211struct in6_addr srcaddr;
212int hoplimit = -1; /* hoplimit */
213int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
214
215/* counters */
216long npackets; /* max packets to transmit */
217long nreceived; /* # of packets we got back */
218long nrepeats; /* number of duplicates */
219long ntransmitted; /* sequence # for outbound packets = #sent */
220struct timeval interval = {1, 0}; /* interval between packets */
221
222/* timing */
223int timing; /* flag to do timing */
224double tmin = 999999999.0; /* minimum round trip time */
225double tmax = 0.0; /* maximum round trip time */
226double tsum = 0.0; /* sum of all times, for doing average */
227#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
228double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
229#endif
230
231/* for node addresses */
232u_short naflags;
233
234/* for ancillary data(advanced API) */
235struct msghdr smsghdr;
236struct iovec smsgiov;
237char *scmsg = 0;
238
239volatile int signo;
240volatile sig_atomic_t seenalrm;
241volatile sig_atomic_t seenint;
242#ifdef SIGINFO
243volatile sig_atomic_t seeninfo;
244#endif
245
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246int main(int, char *[]);
247void fill(char *, char *);
248int get_hoplim(struct msghdr *);
249int get_pathmtu(struct msghdr *);
250void set_pathmtu(int);
251struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
252void onsignal(int);
253void retransmit(void);
254void onint(int);
255size_t pingerlen(void);
256int pinger(void);
257const char *pr_addr(struct sockaddr *, int);
258void pr_icmph(struct icmp6_hdr *, u_char *);
259void pr_iph(struct ip6_hdr *);
260void pr_suptypes(struct icmp6_nodeinfo *, size_t);
261void pr_nodeaddr(struct icmp6_nodeinfo *, int);
262int myechoreply(const struct icmp6_hdr *);
263int mynireply(const struct icmp6_nodeinfo *);
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264char *dnsdecode(const u_char **, const u_char *, const u_char *,
265 u_char *, size_t);
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266void pr_pack(u_char *, int, struct msghdr *);
267void pr_exthdrs(struct msghdr *);
268void pr_ip6opt(void *);
269void pr_rthdr(void *);
270int pr_bitrange(u_int32_t, int, int);
271void pr_retip(struct ip6_hdr *, u_char *);
272void summary(void);
273void tvsub(struct timeval *, struct timeval *);
274int setpolicy(int, char *);
275char *nigroup(char *);
276void usage(void);
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277
278int
b5744197 279main(int argc, char **argv)
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280{
281 struct itimerval itimer;
282 struct sockaddr_in6 from;
283 struct timeval timeout, *tv;
284 struct addrinfo hints;
285 fd_set *fdmaskp;
286 int fdmasks;
287 register int cc, i;
288 int ch, fromlen, hold, packlen, preload, optval, ret_ga;
289 u_char *datap, *packet;
290 char *e, *target, *ifname = NULL;
291 int ip6optlen = 0;
292 struct cmsghdr *scmsgp = NULL;
293 int sockbufsize = 0;
294 int usepktinfo = 0;
295 struct in6_pktinfo *pktinfo = NULL;
296#ifdef USE_RFC2292BIS
297 struct ip6_rthdr *rthdr = NULL;
298#endif
299#ifdef IPSEC_POLICY_IPSEC
300 char *policy_in = NULL;
301 char *policy_out = NULL;
302#endif
303 double intval;
304 size_t rthlen;
305
306 /* just to be sure */
307 memset(&smsghdr, 0, sizeof(smsghdr));
308 memset(&smsgiov, 0, sizeof(smsgiov));
309
310 preload = 0;
311 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
312#ifndef IPSEC
313#define ADDOPTS
314#else
315#ifdef IPSEC_POLICY_IPSEC
316#define ADDOPTS "P:"
317#else
318#define ADDOPTS "AE"
319#endif /*IPSEC_POLICY_IPSEC*/
320#endif
321 while ((ch = getopt(argc, argv,
322 "a:b:c:dfHh:I:i:l:mnNp:qRS:s:tvwW" ADDOPTS)) != -1) {
323#undef ADDOPTS
324 switch (ch) {
325 case 'a':
326 {
327 char *cp;
328
329 options &= ~F_NOUSERDATA;
330 options |= F_NODEADDR;
331 for (cp = optarg; *cp != '\0'; cp++) {
332 switch (*cp) {
333 case 'a':
334 naflags |= NI_NODEADDR_FLAG_ALL;
335 break;
336 case 'c':
337 case 'C':
338 naflags |= NI_NODEADDR_FLAG_COMPAT;
339 break;
340 case 'l':
341 case 'L':
342 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
343 break;
344 case 's':
345 case 'S':
346 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
347 break;
348 case 'g':
349 case 'G':
350 naflags |= NI_NODEADDR_FLAG_GLOBAL;
351 break;
352 case 'A': /* experimental. not in the spec */
353#ifdef NI_NODEADDR_FLAG_ANYCAST
354 naflags |= NI_NODEADDR_FLAG_ANYCAST;
355 break;
356#else
357 errx(1,
358"-a A is not supported on the platform");
359 /*NOTREACHED*/
360#endif
361 default:
362 usage();
363 /*NOTREACHED*/
364 }
365 }
366 break;
367 }
368 case 'b':
369#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
370 sockbufsize = atoi(optarg);
371#else
372 err(1,
373"-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
374#endif
375 break;
376 case 'c':
377 npackets = strtol(optarg, &e, 10);
378 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
379 errx(1,
380 "illegal number of packets -- %s", optarg);
381 break;
382 case 'd':
383 options |= F_SO_DEBUG;
384 break;
385 case 'f':
386 if (getuid()) {
387 errno = EPERM;
388 errx(1, "Must be superuser to flood ping");
389 }
390 options |= F_FLOOD;
391 setbuf(stdout, (char *)NULL);
392 break;
393 case 'H':
394 options |= F_HOSTNAME;
395 break;
396 case 'h': /* hoplimit */
397 hoplimit = strtol(optarg, &e, 10);
398 if (255 < hoplimit || hoplimit < -1)
399 errx(1,
400 "illegal hoplimit -- %s", optarg);
401 break;
402 case 'I':
403 ifname = optarg;
404 options |= F_INTERFACE;
405#ifndef USE_SIN6_SCOPE_ID
406 usepktinfo++;
407#endif
408 break;
409 case 'i': /* wait between sending packets */
410 intval = strtod(optarg, &e);
411 if (*optarg == '\0' || *e != '\0')
412 errx(1, "illegal timing interval %s", optarg);
413 if (intval < 1 && getuid()) {
414 errx(1, "%s: only root may use interval < 1s",
415 strerror(EPERM));
416 }
417 interval.tv_sec = (long)intval;
418 interval.tv_usec =
419 (long)((intval - interval.tv_sec) * 1000000);
420 if (interval.tv_sec < 0)
421 errx(1, "illegal timing interval %s", optarg);
422 /* less than 1/hz does not make sense */
423 if (interval.tv_sec == 0 && interval.tv_usec < 10000) {
424 warnx("too small interval, raised to 0.01");
425 interval.tv_usec = 10000;
426 }
427 options |= F_INTERVAL;
428 break;
429 case 'l':
430 if (getuid()) {
431 errno = EPERM;
432 errx(1, "Must be superuser to preload");
433 }
434 preload = strtol(optarg, &e, 10);
435 if (preload < 0 || *optarg == '\0' || *e != '\0')
436 errx(1, "illegal preload value -- %s", optarg);
437 break;
438 case 'm':
439#ifdef IPV6_USE_MIN_MTU
440 options |= F_NOMINMTU;
441 break;
442#else
443 errx(1, "-%c is not supported on this platform", ch);
444 /*NOTREACHED*/
445#endif
446 case 'n':
447 options &= ~F_HOSTNAME;
448 break;
449 case 'N':
450 options |= F_NIGROUP;
451 break;
452 case 'p': /* fill buffer with user pattern */
453 options |= F_PINGFILLED;
454 fill((char *)datap, optarg);
455 break;
456 case 'q':
457 options |= F_QUIET;
458 break;
459 case 'R':
460#ifdef IPV6_REACHCONF
461 options |= F_REACHCONF;
462 break;
463#else
464 errx(1, "-R is not supported in this configuration");
465#endif
466 case 'S':
467 /* XXX: use getaddrinfo? */
468 if (inet_pton(AF_INET6, optarg, (void *)&srcaddr) != 1)
469 errx(1, "invalid IPv6 address: %s", optarg);
470 options |= F_SRCADDR;
471 usepktinfo++;
472 break;
473 case 's': /* size of packet to send */
474 datalen = strtol(optarg, &e, 10);
475 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
476 errx(1, "illegal datalen value -- %s", optarg);
477 if (datalen > MAXDATALEN) {
478 errx(1,
479 "datalen value too large, maximum is %d",
480 MAXDATALEN);
481 }
482 break;
483 case 't':
484 options &= ~F_NOUSERDATA;
485 options |= F_SUPTYPES;
486 break;
487 case 'v':
488 options |= F_VERBOSE;
489 break;
490 case 'w':
491 options &= ~F_NOUSERDATA;
492 options |= F_FQDN;
493 break;
494 case 'W':
495 options &= ~F_NOUSERDATA;
496 options |= F_FQDNOLD;
497 break;
498#ifdef IPSEC
499#ifdef IPSEC_POLICY_IPSEC
500 case 'P':
501 options |= F_POLICY;
502 if (!strncmp("in", optarg, 2)) {
503 if ((policy_in = strdup(optarg)) == NULL)
504 errx(1, "strdup");
505 } else if (!strncmp("out", optarg, 3)) {
506 if ((policy_out = strdup(optarg)) == NULL)
507 errx(1, "strdup");
508 } else
509 errx(1, "invalid security policy");
510 break;
511#else
512 case 'A':
513 options |= F_AUTHHDR;
514 break;
515 case 'E':
516 options |= F_ENCRYPT;
517 break;
518#endif /*IPSEC_POLICY_IPSEC*/
519#endif /*IPSEC*/
520 default:
521 usage();
522 /*NOTREACHED*/
523 }
524 }
525 argc -= optind;
526 argv += optind;
527
528 if (argc < 1) {
529 usage();
530 /*NOTREACHED*/
531 }
532
533 if (argc > 1) {
534#ifdef IPV6_RECVRTHDR /* 2292bis */
535 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
536 argc - 1));
537#else /* RFC2292 */
538 rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1);
539#endif
540 if (rthlen == 0) {
541 errx(1, "too many intermediate hops");
542 /*NOTREACHED*/
543 }
544 ip6optlen += rthlen;
545 }
546
547 if (options & F_NIGROUP) {
548 target = nigroup(argv[argc - 1]);
549 if (target == NULL) {
550 usage();
551 /*NOTREACHED*/
552 }
553 } else
554 target = argv[argc - 1];
555
556 /* getaddrinfo */
557 bzero(&hints, sizeof(struct addrinfo));
558 hints.ai_flags = AI_CANONNAME;
559 hints.ai_family = AF_INET6;
560 hints.ai_socktype = SOCK_RAW;
561 hints.ai_protocol = IPPROTO_ICMPV6;
562
563 ret_ga = getaddrinfo(target, NULL, &hints, &res);
564 if (ret_ga) {
565 fprintf(stderr, "ping6: %s\n", gai_strerror(ret_ga));
566 exit(1);
567 }
568 if (res->ai_canonname)
569 hostname = res->ai_canonname;
570 else
571 hostname = target;
572
573 if (!res->ai_addr)
574 errx(1, "getaddrinfo failed");
575
7cee7052 576 memcpy(&dst, res->ai_addr, res->ai_addrlen);
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577
578 if ((s = socket(res->ai_family, res->ai_socktype,
579 res->ai_protocol)) < 0)
580 err(1, "socket");
581
582 /*
583 * let the kerel pass extension headers of incoming packets,
584 * for privileged socket options
585 */
586 if ((options & F_VERBOSE) != 0) {
587 int opton = 1;
588
589#ifdef IPV6_RECVHOPOPTS
590 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
591 sizeof(opton)))
592 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
593#else /* old adv. API */
594 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
595 sizeof(opton)))
596 err(1, "setsockopt(IPV6_HOPOPTS)");
597#endif
598#ifdef IPV6_RECVDSTOPTS
599 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
600 sizeof(opton)))
601 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
602#else /* old adv. API */
603 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
604 sizeof(opton)))
605 err(1, "setsockopt(IPV6_DSTOPTS)");
606#endif
607#ifdef IPV6_RECVRTHDRDSTOPTS
608 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
609 sizeof(opton)))
610 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
611#endif
612 }
613
614 /* revoke root privilege */
615 seteuid(getuid());
616 setuid(getuid());
617
618 if (options & F_FLOOD && options & F_INTERVAL)
619 errx(1, "-f and -i incompatible options");
620
621 if ((options & F_NOUSERDATA) == 0) {
622 if (datalen >= sizeof(struct timeval)) {
623 /* we can time transfer */
624 timing = 1;
625 } else
626 timing = 0;
627 /* in F_VERBOSE case, we may get non-echoreply packets*/
628 if (options & F_VERBOSE)
629 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
630 else
631 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
632 } else {
633 /* suppress timing for node information query */
634 timing = 0;
635 datalen = 2048;
636 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
637 }
638
639 if (!(packet = (u_char *)malloc((u_int)packlen)))
640 err(1, "Unable to allocate packet");
641 if (!(options & F_PINGFILLED))
642 for (i = ICMP6ECHOLEN; i < packlen; ++i)
643 *datap++ = i;
644
645 ident = getpid() & 0xFFFF;
646#ifndef __OpenBSD__
647 gettimeofday(&timeout, NULL);
648 srand((unsigned int)(timeout.tv_sec ^ timeout.tv_usec ^ (long)ident));
649 memset(nonce, 0, sizeof(nonce));
650 for (i = 0; i < sizeof(nonce); i += sizeof(int))
651 *((int *)&nonce[i]) = rand();
652#else
653 memset(nonce, 0, sizeof(nonce));
654 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
655 *((u_int32_t *)&nonce[i]) = arc4random();
656#endif
657
658 hold = 1;
659
660 if (options & F_SO_DEBUG)
7cee7052 661 setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
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662 sizeof(hold));
663 optval = IPV6_DEFHLIM;
664 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
665 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
666 &optval, sizeof(optval)) == -1)
667 err(1, "IPV6_MULTICAST_HOPS");
668#ifdef IPV6_USE_MIN_MTU
669 if ((options & F_NOMINMTU) == 0) {
670 optval = 1;
671 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
672 &optval, sizeof(optval)) == -1)
673 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
674 }
675#ifdef IPV6_RECVPATHMTU
676 else {
677 optval = 1;
678 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
679 &optval, sizeof(optval)) == -1)
680 err(1, "setsockopt(IPV6_RECVPATHMTU)");
681 }
682#endif /* IPV6_RECVPATHMTU */
683#endif /* IPV6_USE_MIN_MTU */
684
685#ifdef IPSEC
686#ifdef IPSEC_POLICY_IPSEC
687 if (options & F_POLICY) {
688 if (setpolicy(s, policy_in) < 0)
689 errx(1, "%s", ipsec_strerror());
690 if (setpolicy(s, policy_out) < 0)
691 errx(1, "%s", ipsec_strerror());
692 }
693#else
694 if (options & F_AUTHHDR) {
695 optval = IPSEC_LEVEL_REQUIRE;
696#ifdef IPV6_AUTH_TRANS_LEVEL
697 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
698 &optval, sizeof(optval)) == -1)
699 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
700#else /* old def */
701 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
702 &optval, sizeof(optval)) == -1)
703 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
704#endif
705 }
706 if (options & F_ENCRYPT) {
707 optval = IPSEC_LEVEL_REQUIRE;
708 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
709 &optval, sizeof(optval)) == -1)
710 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
711 }
712#endif /*IPSEC_POLICY_IPSEC*/
713#endif
714
715#ifdef ICMP6_FILTER
716 {
717 struct icmp6_filter filt;
718 if (!(options & F_VERBOSE)) {
719 ICMP6_FILTER_SETBLOCKALL(&filt);
720 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
721 (options & F_NODEADDR) || (options & F_SUPTYPES))
722 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
723 else
724 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
725 } else {
726 ICMP6_FILTER_SETPASSALL(&filt);
727 }
728 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
729 sizeof(filt)) < 0)
730 err(1, "setsockopt(ICMP6_FILTER)");
731 }
732#endif /*ICMP6_FILTER*/
733
734 /* let the kerel pass extension headers of incoming packets */
735 if ((options & F_VERBOSE) != 0) {
736 int opton = 1;
737
738#ifdef IPV6_RECVRTHDR
739 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
740 sizeof(opton)))
741 err(1, "setsockopt(IPV6_RECVRTHDR)");
742#else /* old adv. API */
743 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
744 sizeof(opton)))
745 err(1, "setsockopt(IPV6_RTHDR)");
746#endif
747 }
748
749/*
750 optval = 1;
751 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
752 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
753 &optval, sizeof(optval)) == -1)
754 err(1, "IPV6_MULTICAST_LOOP");
755*/
756
757 /* Specify the outgoing interface and/or the source address */
758 if (usepktinfo)
759 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
760
761 if (hoplimit != -1)
762 ip6optlen += CMSG_SPACE(sizeof(int));
763
764#ifdef IPV6_REACHCONF
765 if (options & F_REACHCONF)
766 ip6optlen += CMSG_SPACE(0);
767#endif
768
769 /* set IP6 packet options */
770 if (ip6optlen) {
771 if ((scmsg = (char *)malloc(ip6optlen)) == 0)
772 errx(1, "can't allocate enough memory");
773 smsghdr.msg_control = (caddr_t)scmsg;
774 smsghdr.msg_controllen = ip6optlen;
775 scmsgp = (struct cmsghdr *)scmsg;
776 }
777 if (usepktinfo) {
778 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
779 memset(pktinfo, 0, sizeof(*pktinfo));
780 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
781 scmsgp->cmsg_level = IPPROTO_IPV6;
782 scmsgp->cmsg_type = IPV6_PKTINFO;
783 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
784 }
785
786 /* set the outgoing interface */
787 if (ifname) {
788#ifndef USE_SIN6_SCOPE_ID
789 /* pktinfo must have already been allocated */
790 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
791 errx(1, "%s: invalid interface name", ifname);
792#else
793 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
794 errx(1, "%s: invalid interface name", ifname);
795#endif
796 }
797 /* set the source address */
798 if (options & F_SRCADDR)/* pktinfo must be valid */
799 pktinfo->ipi6_addr = srcaddr;
800
801 if (hoplimit != -1) {
802 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
803 scmsgp->cmsg_level = IPPROTO_IPV6;
804 scmsgp->cmsg_type = IPV6_HOPLIMIT;
805 *(int *)(CMSG_DATA(scmsgp)) = hoplimit;
806
807 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
808 }
809#ifdef IPV6_REACHCONF
810 if (options & F_REACHCONF) {
811 scmsgp->cmsg_len = CMSG_LEN(0);
812 scmsgp->cmsg_level = IPPROTO_IPV6;
813 scmsgp->cmsg_type = IPV6_REACHCONF;
814
815 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
816 }
817#endif
818
819 if (argc > 1) { /* some intermediate addrs are specified */
820 int hops, error;
821#ifdef USE_RFC2292BIS
822 int rthdrlen;
823#endif
824
825#ifdef USE_RFC2292BIS
826 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
827 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
828 scmsgp->cmsg_level = IPPROTO_IPV6;
829 scmsgp->cmsg_type = IPV6_RTHDR;
830 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
831 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
832 IPV6_RTHDR_TYPE_0, argc - 1);
833 if (rthdr == NULL)
834 errx(1, "can't initialize rthdr");
835#else /* old advanced API */
836 if ((scmsgp = (struct cmsghdr *)inet6_rthdr_init(scmsgp,
837 IPV6_RTHDR_TYPE_0)) == 0)
838 errx(1, "can't initialize rthdr");
839#endif /* USE_RFC2292BIS */
840
841 for (hops = 0; hops < argc - 1; hops++) {
842 struct addrinfo *iaip;
843
844 if ((error = getaddrinfo(argv[hops], NULL, &hints,
845 &iaip)))
846 errx(1, "%s", gai_strerror(error));
847 if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6)
848 errx(1,
849 "bad addr family of an intermediate addr");
850
851#ifdef USE_RFC2292BIS
852 if (inet6_rth_add(rthdr,
853 &(SIN6(iaip->ai_addr))->sin6_addr))
854 errx(1, "can't add an intermediate node");
855#else /* old advanced API */
856 if (inet6_rthdr_add(scmsgp,
857 &(SIN6(iaip->ai_addr))->sin6_addr,
858 IPV6_RTHDR_LOOSE))
859 errx(1, "can't add an intermediate node");
860#endif /* USE_RFC2292BIS */
861 freeaddrinfo(iaip);
862 }
863
864#ifndef USE_RFC2292BIS
865 if (inet6_rthdr_lasthop(scmsgp, IPV6_RTHDR_LOOSE))
866 errx(1, "can't set the last flag");
867#endif
868
869 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
870 }
871
872 {
873 /*
874 * source selection
875 */
876 int dummy, len = sizeof(src);
877
878 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
879 err(1, "UDP socket");
880
881 src.sin6_family = AF_INET6;
882 src.sin6_addr = dst.sin6_addr;
883 src.sin6_port = ntohs(DUMMY_PORT);
884 src.sin6_scope_id = dst.sin6_scope_id;
885
886#ifdef USE_RFC2292BIS
887 if (pktinfo &&
888 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
889 (void *)pktinfo, sizeof(*pktinfo)))
890 err(1, "UDP setsockopt(IPV6_PKTINFO)");
891
892 if (hoplimit != -1 &&
893 setsockopt(dummy, IPPROTO_IPV6, IPV6_HOPLIMIT,
894 (void *)&hoplimit, sizeof(hoplimit)))
895 err(1, "UDP setsockopt(IPV6_HOPLIMIT)");
896
897 if (rthdr &&
898 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
899 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
900 err(1, "UDP setsockopt(IPV6_RTHDR)");
901#else /* old advanced API */
902 if (smsghdr.msg_control &&
903 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS,
904 (void *)smsghdr.msg_control, smsghdr.msg_controllen))
905 err(1, "UDP setsockopt(IPV6_PKTOPTIONS)");
906#endif
907
908 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
909 err(1, "UDP connect");
910
911 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
912 err(1, "getsockname");
913
914 close(dummy);
915 }
916
917#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
918 if (sockbufsize) {
919 if (datalen > sockbufsize)
920 warnx("you need -b to increase socket buffer size");
921 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
922 sizeof(sockbufsize)) < 0)
923 err(1, "setsockopt(SO_SNDBUF)");
924 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
925 sizeof(sockbufsize)) < 0)
926 err(1, "setsockopt(SO_RCVBUF)");
927 }
928 else {
929 if (datalen > 8 * 1024) /*XXX*/
930 warnx("you need -b to increase socket buffer size");
931 /*
932 * When pinging the broadcast address, you can get a lot of
933 * answers. Doing something so evil is useful if you are trying
934 * to stress the ethernet, or just want to fill the arp cache
935 * to get some stuff for /etc/ethers.
936 */
937 hold = 48 * 1024;
938 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
939 sizeof(hold));
940 }
941#endif
942
943 optval = 1;
944#ifndef USE_SIN6_SCOPE_ID
945#ifdef IPV6_RECVPKTINFO
946 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
947 sizeof(optval)) < 0)
948 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
949#else /* old adv. API */
950 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
951 sizeof(optval)) < 0)
952 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
953#endif
954#endif /* USE_SIN6_SCOPE_ID */
955#ifdef IPV6_RECVHOPLIMIT
956 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
957 sizeof(optval)) < 0)
958 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
959#else /* old adv. API */
960 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
961 sizeof(optval)) < 0)
962 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
963#endif
964
965 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
966 (unsigned long)(pingerlen() - 8));
967 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
968 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
969
970 while (preload--) /* Fire off them quickies. */
7cee7052 971 pinger();
984263bc 972
7cee7052 973 signal(SIGINT, onsignal);
984263bc 974#ifdef SIGINFO
7cee7052 975 signal(SIGINFO, onsignal);
984263bc
MD
976#endif
977
978 if ((options & F_FLOOD) == 0) {
7cee7052 979 signal(SIGALRM, onsignal);
984263bc
MD
980 itimer.it_interval = interval;
981 itimer.it_value = interval;
7cee7052 982 setitimer(ITIMER_REAL, &itimer, NULL);
984263bc
MD
983 if (ntransmitted == 0)
984 retransmit();
985 }
986
987 fdmasks = howmany(s + 1, NFDBITS) * sizeof(fd_mask);
988 if ((fdmaskp = malloc(fdmasks)) == NULL)
989 err(1, "malloc");
990
991 signo = seenalrm = seenint = 0;
992#ifdef SIGINFO
993 seeninfo = 0;
994#endif
995
996 for (;;) {
997 struct msghdr m;
998 struct cmsghdr *cm;
999 u_char buf[1024];
1000 struct iovec iov[2];
1001
1002 /* signal handling */
1003 if (seenalrm) {
1004 retransmit();
1005 seenalrm = 0;
1006 continue;
1007 }
1008 if (seenint) {
1009 onint(SIGINT);
1010 seenint = 0;
1011 continue;
1012 }
1013#ifdef SIGINFO
1014 if (seeninfo) {
1015 summary();
1016 seeninfo = 0;
1017 continue;
1018 }
1019#endif
1020
1021 if (options & F_FLOOD) {
7cee7052 1022 pinger();
984263bc
MD
1023 timeout.tv_sec = 0;
1024 timeout.tv_usec = 10000;
1025 tv = &timeout;
1026 } else
1027 tv = NULL;
1028 memset(fdmaskp, 0, fdmasks);
1029 FD_SET(s, fdmaskp);
1030 cc = select(s + 1, fdmaskp, NULL, NULL, tv);
1031 if (cc < 0) {
1032 if (errno != EINTR) {
1033 warn("select");
1034 sleep(1);
1035 }
1036 continue;
1037 } else if (cc == 0)
1038 continue;
1039
1040 fromlen = sizeof(from);
1041 m.msg_name = (caddr_t)&from;
1042 m.msg_namelen = sizeof(from);
1043 memset(&iov, 0, sizeof(iov));
1044 iov[0].iov_base = (caddr_t)packet;
1045 iov[0].iov_len = packlen;
1046 m.msg_iov = iov;
1047 m.msg_iovlen = 1;
1048 cm = (struct cmsghdr *)buf;
1049 m.msg_control = (caddr_t)buf;
1050 m.msg_controllen = sizeof(buf);
1051
1052 cc = recvmsg(s, &m, 0);
1053 if (cc < 0) {
1054 if (errno != EINTR) {
1055 warn("recvmsg");
1056 sleep(1);
1057 }
1058 continue;
1059 } else if (cc == 0) {
1060 int mtu;
1061
1062 /*
1063 * receive control messages only. Process the
1064 * exceptions (currently the only possiblity is
1065 * a path MTU notification.)
1066 */
1067 if ((mtu = get_pathmtu(&m)) > 0) {
1068 if ((options & F_VERBOSE) != 0) {
1069 printf("new path MTU (%d) is "
1070 "notified\n", mtu);
1071 }
1072 set_pathmtu(mtu);
1073 }
1074 continue;
1075 } else {
1076 /*
1077 * an ICMPv6 message (probably an echoreply) arrived.
1078 */
1079 pr_pack(packet, cc, &m);
1080 }
1081 if (npackets && nreceived >= npackets)
1082 break;
1083 }
1084 summary();
1085 exit(nreceived == 0);
1086}
1087
1088void
b5744197 1089onsignal(int sig)
984263bc
MD
1090{
1091 signo = sig;
1092 switch (sig) {
1093 case SIGALRM:
1094 seenalrm++;
1095 break;
1096 case SIGINT:
1097 seenint++;
1098 break;
1099#ifdef SIGINFO
1100 case SIGINFO:
1101 seeninfo++;
1102 break;
1103#endif
1104 }
1105}
1106
1107/*
1108 * retransmit --
1109 * This routine transmits another ping6.
1110 */
1111void
b5744197 1112retransmit(void)
984263bc
MD
1113{
1114 struct itimerval itimer;
1115
1116 if (pinger() == 0)
1117 return;
1118
1119 /*
1120 * If we're not transmitting any more packets, change the timer
1121 * to wait two round-trip times if we've received any packets or
1122 * ten seconds if we haven't.
1123 */
1124#define MAXWAIT 10
1125 if (nreceived) {
1126 itimer.it_value.tv_sec = 2 * tmax / 1000;
1127 if (itimer.it_value.tv_sec == 0)
1128 itimer.it_value.tv_sec = 1;
1129 } else
1130 itimer.it_value.tv_sec = MAXWAIT;
1131 itimer.it_interval.tv_sec = 0;
1132 itimer.it_interval.tv_usec = 0;
1133 itimer.it_value.tv_usec = 0;
1134
7cee7052
SW
1135 signal(SIGALRM, onint);
1136 setitimer(ITIMER_REAL, &itimer, NULL);
984263bc
MD
1137}
1138
1139/*
1140 * pinger --
1141 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1142 * will be added on by the kernel. The ID field is our UNIX process ID,
1143 * and the sequence number is an ascending integer. The first 8 bytes
1144 * of the data portion are used to hold a UNIX "timeval" struct in VAX
1145 * byte-order, to compute the round-trip time.
1146 */
1147size_t
b5744197 1148pingerlen(void)
984263bc
MD
1149{
1150 size_t l;
1151
1152 if (options & F_FQDN)
1153 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1154 else if (options & F_FQDNOLD)
1155 l = ICMP6_NIQLEN;
1156 else if (options & F_NODEADDR)
1157 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1158 else if (options & F_SUPTYPES)
1159 l = ICMP6_NIQLEN;
1160 else
1161 l = ICMP6ECHOLEN + datalen;
1162
1163 return l;
1164}
1165
1166int
b5744197 1167pinger(void)
984263bc
MD
1168{
1169 struct icmp6_hdr *icp;
1170 struct iovec iov[2];
1171 int i, cc;
1172 struct icmp6_nodeinfo *nip;
1173 int seq;
1174
1175 if (npackets && ntransmitted >= npackets)
1176 return(-1); /* no more transmission */
1177
1178 icp = (struct icmp6_hdr *)outpack;
1179 nip = (struct icmp6_nodeinfo *)outpack;
1180 memset(icp, 0, sizeof(*icp));
1181 icp->icmp6_cksum = 0;
1182 seq = ntransmitted++;
1183 CLR(seq % mx_dup_ck);
1184
1185 if (options & F_FQDN) {
1186 icp->icmp6_type = ICMP6_NI_QUERY;
1187 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1188 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1189 nip->ni_flags = htons(0);
1190
1191 memcpy(nip->icmp6_ni_nonce, nonce,
1192 sizeof(nip->icmp6_ni_nonce));
1193 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1194
1195 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1196 sizeof(dst.sin6_addr));
1197 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1198 datalen = 0;
1199 } else if (options & F_FQDNOLD) {
1200 /* packet format in 03 draft - no Subject data on queries */
1201 icp->icmp6_type = ICMP6_NI_QUERY;
1202 icp->icmp6_code = 0; /* code field is always 0 */
1203 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1204 nip->ni_flags = htons(0);
1205
1206 memcpy(nip->icmp6_ni_nonce, nonce,
1207 sizeof(nip->icmp6_ni_nonce));
1208 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1209
1210 cc = ICMP6_NIQLEN;
1211 datalen = 0;
1212 } else if (options & F_NODEADDR) {
1213 icp->icmp6_type = ICMP6_NI_QUERY;
1214 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1215 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1216 nip->ni_flags = naflags;
1217
1218 memcpy(nip->icmp6_ni_nonce, nonce,
1219 sizeof(nip->icmp6_ni_nonce));
1220 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1221
1222 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1223 sizeof(dst.sin6_addr));
1224 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1225 datalen = 0;
1226 } else if (options & F_SUPTYPES) {
1227 icp->icmp6_type = ICMP6_NI_QUERY;
1228 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1229 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1230 /* we support compressed bitmap */
1231 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1232
1233 memcpy(nip->icmp6_ni_nonce, nonce,
1234 sizeof(nip->icmp6_ni_nonce));
1235 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1236 cc = ICMP6_NIQLEN;
1237 datalen = 0;
1238 } else {
1239 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1240 icp->icmp6_code = 0;
1241 icp->icmp6_id = htons(ident);
1242 icp->icmp6_seq = ntohs(seq);
1243 if (timing)
7cee7052 1244 gettimeofday((struct timeval *)
984263bc
MD
1245 &outpack[ICMP6ECHOLEN], NULL);
1246 cc = ICMP6ECHOLEN + datalen;
1247 }
1248
1249#ifdef DIAGNOSTIC
1250 if (pingerlen() != cc)
1251 errx(1, "internal error; length mismatch");
1252#endif
1253
1254 smsghdr.msg_name = (caddr_t)&dst;
1255 smsghdr.msg_namelen = sizeof(dst);
1256 memset(&iov, 0, sizeof(iov));
1257 iov[0].iov_base = (caddr_t)outpack;
1258 iov[0].iov_len = cc;
1259 smsghdr.msg_iov = iov;
1260 smsghdr.msg_iovlen = 1;
1261
1262 i = sendmsg(s, &smsghdr, 0);
1263
1264 if (i < 0 || i != cc) {
1265 if (i < 0)
1266 warn("sendmsg");
7cee7052 1267 printf("ping6: wrote %s %d chars, ret=%d\n", hostname, cc, i);
984263bc
MD
1268 }
1269 if (!(options & F_QUIET) && options & F_FLOOD)
7cee7052 1270 write(STDOUT_FILENO, &DOT, 1);
984263bc
MD
1271
1272 return(0);
1273}
1274
1275int
b5744197 1276myechoreply(const struct icmp6_hdr *icp)
984263bc
MD
1277{
1278 if (ntohs(icp->icmp6_id) == ident)
1279 return 1;
1280 else
1281 return 0;
1282}
1283
1284int
b5744197 1285mynireply(const struct icmp6_nodeinfo *nip)
984263bc
MD
1286{
1287 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1288 nonce + sizeof(u_int16_t),
1289 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1290 return 1;
1291 else
1292 return 0;
1293}
1294
1295char *
b5744197
HP
1296dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, u_char *buf,
1297 size_t bufsiz)
984263bc
MD
1298{
1299 int i;
1300 const u_char *cp;
1301 char cresult[MAXDNAME + 1];
1302 const u_char *comp;
1303 int l;
1304
1305 cp = *sp;
1306 *buf = '\0';
1307
1308 if (cp >= ep)
1309 return NULL;
1310 while (cp < ep) {
1311 i = *cp;
1312 if (i == 0 || cp != *sp) {
1313 if (strlcat(buf, ".", bufsiz) >= bufsiz)
1314 return NULL; /*result overrun*/
1315 }
1316 if (i == 0)
1317 break;
1318 cp++;
1319
1320 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1321 /* DNS compression */
1322 if (!base)
1323 return NULL;
1324
1325 comp = base + (i & 0x3f);
1326 if (dnsdecode(&comp, cp, base, cresult,
1327 sizeof(cresult)) == NULL)
1328 return NULL;
1329 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1330 return NULL; /*result overrun*/
1331 break;
1332 } else if ((i & 0x3f) == i) {
1333 if (i > ep - cp)
1334 return NULL; /*source overrun*/
1335 while (i-- > 0 && cp < ep) {
1336 l = snprintf(cresult, sizeof(cresult),
1337 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1338 if (l >= sizeof(cresult))
1339 return NULL;
1340 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1341 return NULL; /*result overrun*/
1342 cp++;
1343 }
1344 } else
1345 return NULL; /*invalid label*/
1346 }
1347 if (i != 0)
1348 return NULL; /*not terminated*/
1349 cp++;
1350 *sp = cp;
1351 return buf;
1352}
1353
1354/*
1355 * pr_pack --
1356 * Print out the packet, if it came from us. This logic is necessary
1357 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1358 * which arrive ('tis only fair). This permits multiple copies of this
1359 * program to be run without having intermingled output (or statistics!).
1360 */
1361void
b5744197 1362pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
984263bc
MD
1363{
1364#define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1365 struct icmp6_hdr *icp;
1366 struct icmp6_nodeinfo *ni;
1367 int i;
1368 int hoplim;
1369 struct sockaddr *from;
1370 int fromlen;
1371 u_char *cp = NULL, *dp, *end = buf + cc;
1372 struct in6_pktinfo *pktinfo = NULL;
1373 struct timeval tv, *tp;
1374 double triptime = 0;
1375 int dupflag;
1376 size_t off;
1377 int oldfqdn;
1378 u_int16_t seq;
1379 char dnsname[MAXDNAME + 1];
1380
7cee7052 1381 gettimeofday(&tv, NULL);
984263bc
MD
1382
1383 if (!mhdr || !mhdr->msg_name ||
1384 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1385 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1386 if (options & F_VERBOSE)
1387 warnx("invalid peername\n");
1388 return;
1389 }
1390 from = (struct sockaddr *)mhdr->msg_name;
1391 fromlen = mhdr->msg_namelen;
1392 if (cc < sizeof(struct icmp6_hdr)) {
1393 if (options & F_VERBOSE)
1394 warnx("packet too short (%d bytes) from %s\n", cc,
1395 pr_addr(from, fromlen));
1396 return;
1397 }
1398 icp = (struct icmp6_hdr *)buf;
1399 ni = (struct icmp6_nodeinfo *)buf;
1400 off = 0;
1401
1402 if ((hoplim = get_hoplim(mhdr)) == -1) {
1403 warnx("failed to get receiving hop limit");
1404 return;
1405 }
1406 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1407 warnx("failed to get receiving pakcet information");
1408 return;
1409 }
1410
1411 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1412 seq = ntohs(icp->icmp6_seq);
1413 ++nreceived;
1414 if (timing) {
1415 tp = (struct timeval *)(icp + 1);
1416 tvsub(&tv, tp);
1417 triptime = ((double)tv.tv_sec) * 1000.0 +
1418 ((double)tv.tv_usec) / 1000.0;
1419 tsum += triptime;
1420#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
1421 tsumsq += triptime * triptime;
1422#endif
1423 if (triptime < tmin)
1424 tmin = triptime;
1425 if (triptime > tmax)
1426 tmax = triptime;
1427 }
1428
1429 if (TST(seq % mx_dup_ck)) {
1430 ++nrepeats;
1431 --nreceived;
1432 dupflag = 1;
1433 } else {
1434 SET(seq % mx_dup_ck);
1435 dupflag = 0;
1436 }
1437
1438 if (options & F_QUIET)
1439 return;
1440
1441 if (options & F_FLOOD)
7cee7052 1442 write(STDOUT_FILENO, &BSPACE, 1);
984263bc 1443 else {
7cee7052 1444 printf("%d bytes from %s, icmp_seq=%u", cc,
984263bc 1445 pr_addr(from, fromlen), seq);
7cee7052 1446 printf(" hlim=%d", hoplim);
984263bc
MD
1447 if ((options & F_VERBOSE) != 0) {
1448 struct sockaddr_in6 dstsa;
1449
1450 memset(&dstsa, 0, sizeof(dstsa));
1451 dstsa.sin6_family = AF_INET6;
1452#ifdef SIN6_LEN
1453 dstsa.sin6_len = sizeof(dstsa);
1454#endif
1455 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1456 dstsa.sin6_addr = pktinfo->ipi6_addr;
7cee7052 1457 printf(" dst=%s",
984263bc
MD
1458 pr_addr((struct sockaddr *)&dstsa,
1459 sizeof(dstsa)));
1460 }
1461 if (timing)
7cee7052 1462 printf(" time=%g ms", triptime);
984263bc 1463 if (dupflag)
7cee7052 1464 printf("(DUP!)");
984263bc
MD
1465 /* check the data */
1466 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1467 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1468 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1469 if (*cp != *dp) {
7cee7052 1470 printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
984263bc
MD
1471 break;
1472 }
1473 }
1474 }
1475 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1476 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce);
1477 ++nreceived;
1478 if (TST(seq % mx_dup_ck)) {
1479 ++nrepeats;
1480 --nreceived;
1481 dupflag = 1;
1482 } else {
1483 SET(seq % mx_dup_ck);
1484 dupflag = 0;
1485 }
1486
1487 if (options & F_QUIET)
1488 return;
1489
7cee7052 1490 printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
984263bc
MD
1491
1492 switch (ntohs(ni->ni_code)) {
1493 case ICMP6_NI_SUCCESS:
1494 break;
1495 case ICMP6_NI_REFUSED:
1496 printf("refused, type 0x%x", ntohs(ni->ni_type));
1497 goto fqdnend;
1498 case ICMP6_NI_UNKNOWN:
1499 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1500 goto fqdnend;
1501 default:
1502 printf("unknown code 0x%x, type 0x%x",
1503 ntohs(ni->ni_code), ntohs(ni->ni_type));
1504 goto fqdnend;
1505 }
1506
1507 switch (ntohs(ni->ni_qtype)) {
1508 case NI_QTYPE_NOOP:
1509 printf("NodeInfo NOOP");
1510 break;
1511 case NI_QTYPE_SUPTYPES:
1512 pr_suptypes(ni, end - (u_char *)ni);
1513 break;
1514 case NI_QTYPE_NODEADDR:
1515 pr_nodeaddr(ni, end - (u_char *)ni);
1516 break;
1517 case NI_QTYPE_FQDN:
1518 default: /* XXX: for backward compatibility */
1519 cp = (u_char *)ni + ICMP6_NIRLEN;
1520 if (buf[off + ICMP6_NIRLEN] ==
1521 cc - off - ICMP6_NIRLEN - 1)
1522 oldfqdn = 1;
1523 else
1524 oldfqdn = 0;
1525 if (oldfqdn) {
1526 cp++; /* skip length */
1527 while (cp < end) {
1528 safeputc(*cp & 0xff);
1529 cp++;
1530 }
1531 } else {
1532 i = 0;
1533 while (cp < end) {
1534 if (dnsdecode((const u_char **)&cp, end,
1535 (const u_char *)(ni + 1), dnsname,
1536 sizeof(dnsname)) == NULL) {
1537 printf("???");
1538 break;
1539 }
1540 /*
1541 * name-lookup special handling for
1542 * truncated name
1543 */
1544 if (cp + 1 <= end && !*cp &&
1545 strlen(dnsname) > 0) {
1546 dnsname[strlen(dnsname) - 1] = '\0';
1547 cp++;
1548 }
1549 printf("%s%s", i > 0 ? "," : "",
1550 dnsname);
1551 }
1552 }
1553 if (options & F_VERBOSE) {
1554 int32_t ttl;
1555 int comma = 0;
1556
7cee7052 1557 printf(" ("); /*)*/
984263bc
MD
1558
1559 switch (ni->ni_code) {
1560 case ICMP6_NI_REFUSED:
7cee7052 1561 printf("refused");
984263bc
MD
1562 comma++;
1563 break;
1564 case ICMP6_NI_UNKNOWN:
7cee7052 1565 printf("unknwon qtype");
984263bc
MD
1566 comma++;
1567 break;
1568 }
1569
1570 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1571 /* case of refusion, unknown */
1572 /*(*/
1573 putchar(')');
1574 goto fqdnend;
1575 }
1576 ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]);
1577 if (comma)
1578 printf(",");
1579 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
7cee7052 1580 printf("TTL=%d:meaningless", (int)ttl);
984263bc
MD
1581 } else {
1582 if (ttl < 0) {
7cee7052 1583 printf("TTL=%d:invalid", ttl);
984263bc 1584 } else
7cee7052 1585 printf("TTL=%d", ttl);
984263bc
MD
1586 }
1587 comma++;
1588
1589 if (oldfqdn) {
1590 if (comma)
1591 printf(",");
1592 printf("03 draft");
1593 comma++;
1594 } else {
1595 cp = (u_char *)ni + ICMP6_NIRLEN;
1596 if (cp == end) {
1597 if (comma)
1598 printf(",");
1599 printf("no name");
1600 comma++;
1601 }
1602 }
1603
1604 if (buf[off + ICMP6_NIRLEN] !=
1605 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1606 if (comma)
1607 printf(",");
7cee7052 1608 printf("invalid namelen:%d/%lu",
984263bc
MD
1609 buf[off + ICMP6_NIRLEN],
1610 (u_long)cc - off - ICMP6_NIRLEN - 1);
1611 comma++;
1612 }
1613 /*(*/
1614 putchar(')');
1615 }
1616 fqdnend:
1617 ;
1618 }
1619 } else {
1620 /* We've got something other than an ECHOREPLY */
1621 if (!(options & F_VERBOSE))
1622 return;
7cee7052 1623 printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
984263bc
MD
1624 pr_icmph(icp, end);
1625 }
1626
1627 if (!(options & F_FLOOD)) {
7cee7052 1628 putchar('\n');
984263bc
MD
1629 if (options & F_VERBOSE)
1630 pr_exthdrs(mhdr);
7cee7052 1631 fflush(stdout);
984263bc
MD
1632 }
1633#undef safeputc
1634}
1635
1636void
b5744197 1637pr_exthdrs(struct msghdr *mhdr)
984263bc
MD
1638{
1639 struct cmsghdr *cm;
1640
1641 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1642 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1643 if (cm->cmsg_level != IPPROTO_IPV6)
1644 continue;
1645
1646 switch (cm->cmsg_type) {
1647 case IPV6_HOPOPTS:
1648 printf(" HbH Options: ");
1649 pr_ip6opt(CMSG_DATA(cm));
1650 break;
1651 case IPV6_DSTOPTS:
1652#ifdef IPV6_RTHDRDSTOPTS
1653 case IPV6_RTHDRDSTOPTS:
1654#endif
1655 printf(" Dst Options: ");
1656 pr_ip6opt(CMSG_DATA(cm));
1657 break;
1658 case IPV6_RTHDR:
1659 printf(" Routing: ");
1660 pr_rthdr(CMSG_DATA(cm));
1661 break;
1662 }
1663 }
1664}
1665
1666#ifdef USE_RFC2292BIS
1667void
1668pr_ip6opt(void *extbuf)
1669{
1670 struct ip6_hbh *ext;
1671 int currentlen;
1672 u_int8_t type;
1673 size_t extlen, len;
1674 void *databuf;
1675 size_t offset;
1676 u_int16_t value2;
1677 u_int32_t value4;
1678
1679 ext = (struct ip6_hbh *)extbuf;
1680 extlen = (ext->ip6h_len + 1) * 8;
1681 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1682 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1683
1684 currentlen = 0;
1685 while (1) {
1686 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1687 &type, &len, &databuf);
1688 if (currentlen == -1)
1689 break;
1690 switch (type) {
1691 /*
1692 * Note that inet6_opt_next automatically skips any padding
1693 * optins.
1694 */
1695 case IP6OPT_JUMBO:
1696 offset = 0;
1697 offset = inet6_opt_get_val(databuf, offset,
1698 &value4, sizeof(value4));
1699 printf(" Jumbo Payload Opt: Length %u\n",
1700 (u_int32_t)ntohl(value4));
1701 break;
1702 case IP6OPT_ROUTER_ALERT:
1703 offset = 0;
1704 offset = inet6_opt_get_val(databuf, offset,
1705 &value2, sizeof(value2));
1706 printf(" Router Alert Opt: Type %u\n",
1707 ntohs(value2));
1708 break;
1709 default:
1710 printf(" Received Opt %u len %lu\n",
1711 type, (unsigned long)len);
1712 break;
1713 }
1714 }
1715 return;
1716}
1717#else /* !USE_RFC2292BIS */
1718/* ARGSUSED */
1719void
1720pr_ip6opt(void *extbuf)
1721{
1722 putchar('\n');
1723 return;
1724}
1725#endif /* USE_RFC2292BIS */
1726
1727#ifdef USE_RFC2292BIS
1728void
1729pr_rthdr(void *extbuf)
1730{
1731 struct in6_addr *in6;
1732 char ntopbuf[INET6_ADDRSTRLEN];
1733 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1734 int i, segments;
1735
1736 /* print fixed part of the header */
1737 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1738 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1739 if ((segments = inet6_rth_segments(extbuf)) >= 0)
1740 printf("%d segments, ", segments);
1741 else
1742 printf("segments unknown, ");
1743 printf("%d left\n", rh->ip6r_segleft);
1744
1745 for (i = 0; i < segments; i++) {
1746 in6 = inet6_rth_getaddr(extbuf, i);
1747 if (in6 == NULL)
1748 printf(" [%d]<NULL>\n", i);
1749 else {
1750 if (!inet_ntop(AF_INET6, in6, ntopbuf,
1751 sizeof(ntopbuf)))
1752 strncpy(ntopbuf, "?", sizeof(ntopbuf));
1753 printf(" [%d]%s\n", i, ntopbuf);
1754 }
1755 }
1756
1757 return;
1758
1759}
1760
1761#else /* !USE_RFC2292BIS */
1762/* ARGSUSED */
1763void
1764pr_rthdr(void *extbuf)
1765{
1766 putchar('\n');
1767 return;
1768}
1769#endif /* USE_RFC2292BIS */
1770
1771int
b5744197 1772pr_bitrange(u_int32_t v, int s, int ii)
984263bc
MD
1773{
1774 int off;
1775 int i;
1776
1777 off = 0;
1778 while (off < 32) {
1779 /* shift till we have 0x01 */
1780 if ((v & 0x01) == 0) {
1781 if (ii > 1)
1782 printf("-%u", s + off - 1);
1783 ii = 0;
1784 switch (v & 0x0f) {
1785 case 0x00:
1786 v >>= 4;
1787 off += 4;
1788 continue;
1789 case 0x08:
1790 v >>= 3;
1791 off += 3;
1792 continue;
1793 case 0x04: case 0x0c:
1794 v >>= 2;
1795 off += 2;
1796 continue;
1797 default:
1798 v >>= 1;
1799 off += 1;
1800 continue;
1801 }
1802 }
1803
1804 /* we have 0x01 with us */
1805 for (i = 0; i < 32 - off; i++) {
1806 if ((v & (0x01 << i)) == 0)
1807 break;
1808 }
1809 if (!ii)
1810 printf(" %u", s + off);
1811 ii += i;
1812 v >>= i; off += i;
1813 }
1814 return ii;
1815}
1816
b5744197 1817/* struct icmp6_nodeinfo *ni: ni->qtype must be SUPTYPES */
984263bc 1818void
b5744197 1819pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
984263bc
MD
1820{
1821 size_t clen;
1822 u_int32_t v;
1823 const u_char *cp, *end;
1824 u_int16_t cur;
1825 struct cbit {
1826 u_int16_t words; /*32bit count*/
1827 u_int16_t skip;
1828 } cbit;
1829#define MAXQTYPES (1 << 16)
1830 size_t off;
1831 int b;
1832
1833 cp = (u_char *)(ni + 1);
1834 end = ((u_char *)ni) + nilen;
1835 cur = 0;
1836 b = 0;
1837
1838 printf("NodeInfo Supported Qtypes");
1839 if (options & F_VERBOSE) {
1840 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
1841 printf(", compressed bitmap");
1842 else
1843 printf(", raw bitmap");
1844 }
1845
1846 while (cp < end) {
1847 clen = (size_t)(end - cp);
1848 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
1849 if (clen == 0 || clen > MAXQTYPES / 8 ||
1850 clen % sizeof(v)) {
1851 printf("???");
1852 return;
1853 }
1854 } else {
1855 if (clen < sizeof(cbit) || clen % sizeof(v))
1856 return;
1857 memcpy(&cbit, cp, sizeof(cbit));
1858 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
1859 clen)
1860 return;
1861 cp += sizeof(cbit);
1862 clen = ntohs(cbit.words) * sizeof(v);
1863 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
1864 MAXQTYPES)
1865 return;
1866 }
1867
1868 for (off = 0; off < clen; off += sizeof(v)) {
1869 memcpy(&v, cp + off, sizeof(v));
1870 v = (u_int32_t)ntohl(v);
1871 b = pr_bitrange(v, (int)(cur + off * 8), b);
1872 }
1873 /* flush the remaining bits */
1874 b = pr_bitrange(0, (int)(cur + off * 8), b);
1875
1876 cp += clen;
1877 cur += clen * 8;
1878 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
1879 cur += ntohs(cbit.skip) * 32;
1880 }
1881}
1882
b5744197 1883/* struct icmp6_nodeinfo *ni: ni->qtype must be NODEADDR */
984263bc 1884void
b5744197 1885pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
984263bc
MD
1886{
1887 u_char *cp = (u_char *)(ni + 1);
1888 char ntop_buf[INET6_ADDRSTRLEN];
1889 int withttl = 0;
1890
1891 nilen -= sizeof(struct icmp6_nodeinfo);
1892
1893 if (options & F_VERBOSE) {
1894 switch (ni->ni_code) {
1895 case ICMP6_NI_REFUSED:
7cee7052 1896 printf("refused");
984263bc
MD
1897 break;
1898 case ICMP6_NI_UNKNOWN:
7cee7052 1899 printf("unknown qtype");
984263bc
MD
1900 break;
1901 }
1902 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
7cee7052 1903 printf(" truncated");
984263bc
MD
1904 }
1905 putchar('\n');
1906 if (nilen <= 0)
1907 printf(" no address\n");
1908
1909 /*
1910 * In icmp-name-lookups 05 and later, TTL of each returned address
1911 * is contained in the resposne. We try to detect the version
1912 * by the length of the data, but note that the detection algorithm
1913 * is incomplete. We assume the latest draft by default.
1914 */
1915 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
1916 withttl = 1;
1917 while (nilen > 0) {
8af0d623 1918 u_int32_t ttl = 0;
984263bc
MD
1919
1920 if (withttl) {
1921 /* XXX: alignment? */
1922 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp);
1923 cp += sizeof(u_int32_t);
1924 nilen -= sizeof(u_int32_t);
1925 }
1926
1927 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
1928 NULL)
1929 strncpy(ntop_buf, "?", sizeof(ntop_buf));
1930 printf(" %s", ntop_buf);
1931 if (withttl) {
1932 if (ttl == 0xffffffff) {
1933 /*
1934 * XXX: can this convention be applied to all
1935 * type of TTL (i.e. non-ND TTL)?
1936 */
1937 printf("(TTL=infty)");
1938 }
1939 else
1940 printf("(TTL=%u)", ttl);
1941 }
1942 putchar('\n');
1943
1944 nilen -= sizeof(struct in6_addr);
1945 cp += sizeof(struct in6_addr);
1946 }
1947}
1948
1949int
b5744197 1950get_hoplim(struct msghdr *mhdr)
984263bc
MD
1951{
1952 struct cmsghdr *cm;
1953
1954 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1955 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1956 if (cm->cmsg_len == 0)
1957 return(-1);
1958
1959 if (cm->cmsg_level == IPPROTO_IPV6 &&
1960 cm->cmsg_type == IPV6_HOPLIMIT &&
1961 cm->cmsg_len == CMSG_LEN(sizeof(int)))
1962 return(*(int *)CMSG_DATA(cm));
1963 }
1964
1965 return(-1);
1966}
1967
1968struct in6_pktinfo *
b5744197 1969get_rcvpktinfo(struct msghdr *mhdr)
984263bc
MD
1970{
1971 struct cmsghdr *cm;
1972
1973 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1974 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1975 if (cm->cmsg_len == 0)
1976 return(NULL);
1977
1978 if (cm->cmsg_level == IPPROTO_IPV6 &&
1979 cm->cmsg_type == IPV6_PKTINFO &&
1980 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
1981 return((struct in6_pktinfo *)CMSG_DATA(cm));
1982 }
1983
1984 return(NULL);
1985}
1986
1987int
b5744197 1988get_pathmtu(struct msghdr *mhdr)
984263bc
MD
1989{
1990#ifdef IPV6_RECVPATHMTU
1991 struct cmsghdr *cm;
1992 struct ip6_mtuinfo *mtuctl = NULL;
1993
1994 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1995 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1996 if (cm->cmsg_len == 0)
1997 return(0);
1998
1999 if (cm->cmsg_level == IPPROTO_IPV6 &&
2000 cm->cmsg_type == IPV6_PATHMTU &&
2001 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2002 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm);
2003
2004 /*
2005 * If the notified destination is different from
2006 * the one we are pinging, just ignore the info.
2007 * We check the scope ID only when both notified value
2008 * and our own value have non-0 values, because we may
2009 * have used the default scope zone ID for sending,
2010 * in which case the scope ID value is 0.
2011 */
2012 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr,
2013 &dst.sin6_addr) ||
2014 (mtuctl->ip6m_addr.sin6_scope_id &&
2015 dst.sin6_scope_id &&
2016 mtuctl->ip6m_addr.sin6_scope_id !=
2017 dst.sin6_scope_id)) {
2018 if ((options & F_VERBOSE) != 0) {
2019 printf("path MTU for %s is notified. "
2020 "(ignored)\n",
2021 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr,
2022 sizeof(mtuctl->ip6m_addr)));
2023 }
2024 return(0);
2025 }
2026
2027 /*
2028 * Ignore an invalid MTU. XXX: can we just believe
2029 * the kernel check?
2030 */
2031 if (mtuctl->ip6m_mtu < IPV6_MMTU)
2032 return(0);
2033
2034 /* notification for our destination. return the MTU. */
2035 return((int)mtuctl->ip6m_mtu);
2036 }
2037 }
2038#endif
2039 return(0);
2040}
2041
2042void
b5744197 2043set_pathmtu(int mtu)
984263bc
MD
2044{
2045#ifdef IPV6_USE_MTU
2046 static int firsttime = 1;
2047 struct cmsghdr *cm;
2048
2049 if (firsttime) {
2050 int oldlen = smsghdr.msg_controllen;
2051 char *oldbuf = smsghdr.msg_control;
2052
2053 /* XXX: We need to enlarge control message buffer */
2054 firsttime = 0; /* prevent further enlargement */
2055
2056 smsghdr.msg_controllen = oldlen + CMSG_SPACE(sizeof(int));
2057 if ((smsghdr.msg_control =
2058 (char *)malloc(smsghdr.msg_controllen)) == NULL)
2059 err(1, "set_pathmtu: malloc");
2060 cm = (struct cmsghdr *)CMSG_FIRSTHDR(&smsghdr);
2061 cm->cmsg_len = CMSG_LEN(sizeof(int));
2062 cm->cmsg_level = IPPROTO_IPV6;
2063 cm->cmsg_type = IPV6_USE_MTU;
2064
2065 cm = (struct cmsghdr *)CMSG_NXTHDR(&smsghdr, cm);
2066 if (oldlen)
2067 memcpy((void *)cm, (void *)oldbuf, oldlen);
2068
2069 free(oldbuf);
2070 }
2071
2072 /*
2073 * look for a cmsgptr that points MTU structure.
2074 * XXX: this procedure seems redundant at this moment, but we'd better
2075 * keep the code generic enough for future extensions.
2076 */
2077 for (cm = CMSG_FIRSTHDR(&smsghdr); cm;
2078 cm = (struct cmsghdr *)CMSG_NXTHDR(&smsghdr, cm)) {
2079 if (cm->cmsg_len == 0) /* XXX: paranoid check */
2080 errx(1, "set_pathmtu: internal error");
2081
2082 if (cm->cmsg_level == IPPROTO_IPV6 &&
2083 cm->cmsg_type == IPV6_USE_MTU &&
2084 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2085 break;
2086 }
2087
2088 if (cm == NULL)
2089 errx(1, "set_pathmtu: internal error: no space for path MTU");
2090
2091 *(int *)CMSG_DATA(cm) = mtu;
2092#endif
2093}
2094
2095/*
2096 * tvsub --
2097 * Subtract 2 timeval structs: out = out - in. Out is assumed to
2098 * be >= in.
2099 */
2100void
b5744197 2101tvsub(register struct timeval *out, register struct timeval *in)
984263bc
MD
2102{
2103 if ((out->tv_usec -= in->tv_usec) < 0) {
2104 --out->tv_sec;
2105 out->tv_usec += 1000000;
2106 }
2107 out->tv_sec -= in->tv_sec;
2108}
2109
2110/*
2111 * onint --
2112 * SIGINT handler.
2113 */
2114/* ARGSUSED */
2115void
b5744197 2116onint(int notused)
984263bc 2117{
7cee7052
SW
2118 signal(SIGINT, SIG_IGN);
2119 signal(SIGALRM, SIG_IGN);
984263bc
MD
2120
2121 summary();
2122
2123 exit(nreceived == 0);
2124}
2125
2126/*
2127 * summary --
2128 * Print out statistics.
2129 */
2130void
b5744197 2131summary(void)
984263bc
MD
2132{
2133
7cee7052
SW
2134 printf("\n--- %s ping6 statistics ---\n", hostname);
2135 printf("%ld packets transmitted, ", ntransmitted);
2136 printf("%ld packets received, ", nreceived);
984263bc 2137 if (nrepeats)
7cee7052 2138 printf("+%ld duplicates, ", nrepeats);
984263bc
MD
2139 if (ntransmitted) {
2140 if (nreceived > ntransmitted)
7cee7052 2141 printf("-- somebody's printing up packets!");
984263bc 2142 else
7cee7052 2143 printf("%d%% packet loss",
984263bc
MD
2144 (int) (((ntransmitted - nreceived) * 100) /
2145 ntransmitted));
2146 }
7cee7052 2147 putchar('\n');
984263bc
MD
2148 if (nreceived && timing) {
2149 /* Only display average to microseconds */
2150 double num = nreceived + nrepeats;
2151 double avg = tsum / num;
2152#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__)
2153 double dev = sqrt(tsumsq / num - avg * avg);
7cee7052 2154 printf(
984263bc
MD
2155 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2156 tmin, avg, tmax, dev);
2157#else
7cee7052 2158 printf(
984263bc
MD
2159 "round-trip min/avg/max = %.3f/%.3f/%.3f ms\n",
2160 tmin, avg, tmax);
2161#endif
7cee7052 2162 fflush(stdout);
984263bc 2163 }
7cee7052 2164 fflush(stdout);
984263bc
MD
2165}
2166
2167/*subject type*/
2168static char *niqcode[] = {
2169 "IPv6 address",
2170 "DNS label", /*or empty*/
2171 "IPv4 address",
2172};
2173
2174/*result code*/
2175static char *nircode[] = {
2176 "Success", "Refused", "Unknown",
2177};
2178
2179
2180/*
2181 * pr_icmph --
2182 * Print a descriptive string about an ICMP header.
2183 */
2184void
b5744197 2185pr_icmph(struct icmp6_hdr *icp, u_char *end)
984263bc
MD
2186{
2187 char ntop_buf[INET6_ADDRSTRLEN];
2188 struct nd_redirect *red;
2189 struct icmp6_nodeinfo *ni;
2190 char dnsname[MAXDNAME + 1];
2191 const u_char *cp;
2192 size_t l;
2193
2194 switch (icp->icmp6_type) {
2195 case ICMP6_DST_UNREACH:
2196 switch (icp->icmp6_code) {
2197 case ICMP6_DST_UNREACH_NOROUTE:
7cee7052 2198 printf("No Route to Destination\n");
984263bc
MD
2199 break;
2200 case ICMP6_DST_UNREACH_ADMIN:
7cee7052 2201 printf("Destination Administratively Unreachable\n");
984263bc
MD
2202 break;
2203 case ICMP6_DST_UNREACH_BEYONDSCOPE:
7cee7052 2204 printf("Destination Unreachable Beyond Scope\n");
984263bc
MD
2205 break;
2206 case ICMP6_DST_UNREACH_ADDR:
7cee7052 2207 printf("Destination Host Unreachable\n");
984263bc
MD
2208 break;
2209 case ICMP6_DST_UNREACH_NOPORT:
7cee7052 2210 printf("Destination Port Unreachable\n");
984263bc
MD
2211 break;
2212 default:
7cee7052 2213 printf("Destination Unreachable, Bad Code: %d\n",
984263bc
MD
2214 icp->icmp6_code);
2215 break;
2216 }
2217 /* Print returned IP header information */
2218 pr_retip((struct ip6_hdr *)(icp + 1), end);
2219 break;
2220 case ICMP6_PACKET_TOO_BIG:
7cee7052 2221 printf("Packet too big mtu = %d\n",
984263bc
MD
2222 (int)ntohl(icp->icmp6_mtu));
2223 pr_retip((struct ip6_hdr *)(icp + 1), end);
2224 break;
2225 case ICMP6_TIME_EXCEEDED:
2226 switch (icp->icmp6_code) {
2227 case ICMP6_TIME_EXCEED_TRANSIT:
7cee7052 2228 printf("Time to live exceeded\n");
984263bc
MD
2229 break;
2230 case ICMP6_TIME_EXCEED_REASSEMBLY:
7cee7052 2231 printf("Frag reassembly time exceeded\n");
984263bc
MD
2232 break;
2233 default:
7cee7052 2234 printf("Time exceeded, Bad Code: %d\n",
984263bc
MD
2235 icp->icmp6_code);
2236 break;
2237 }
2238 pr_retip((struct ip6_hdr *)(icp + 1), end);
2239 break;
2240 case ICMP6_PARAM_PROB:
7cee7052 2241 printf("Parameter problem: ");
984263bc
MD
2242 switch (icp->icmp6_code) {
2243 case ICMP6_PARAMPROB_HEADER:
7cee7052 2244 printf("Erroneous Header ");
984263bc
MD
2245 break;
2246 case ICMP6_PARAMPROB_NEXTHEADER:
7cee7052 2247 printf("Unknown Nextheader ");
984263bc
MD
2248 break;
2249 case ICMP6_PARAMPROB_OPTION:
7cee7052 2250 printf("Unrecognized Option ");
984263bc
MD
2251 break;
2252 default:
7cee7052 2253 printf("Bad code(%d) ", icp->icmp6_code);
984263bc
MD
2254 break;
2255 }
7cee7052 2256 printf("pointer = 0x%02x\n", (u_int32_t)ntohl(icp->icmp6_pptr));
984263bc
MD
2257 pr_retip((struct ip6_hdr *)(icp + 1), end);
2258 break;
2259 case ICMP6_ECHO_REQUEST:
7cee7052 2260 printf("Echo Request");
984263bc
MD
2261 /* XXX ID + Seq + Data */
2262 break;
2263 case ICMP6_ECHO_REPLY:
7cee7052 2264 printf("Echo Reply");
984263bc
MD
2265 /* XXX ID + Seq + Data */
2266 break;
2267 case ICMP6_MEMBERSHIP_QUERY:
7cee7052 2268 printf("Listener Query");
984263bc
MD
2269 break;
2270 case ICMP6_MEMBERSHIP_REPORT:
7cee7052 2271 printf("Listener Report");
984263bc
MD
2272 break;
2273 case ICMP6_MEMBERSHIP_REDUCTION:
7cee7052 2274 printf("Listener Done");
984263bc
MD
2275 break;
2276 case ND_ROUTER_SOLICIT:
7cee7052 2277 printf("Router Solicitation");
984263bc
MD
2278 break;
2279 case ND_ROUTER_ADVERT:
7cee7052 2280 printf("Router Advertisement");
984263bc
MD
2281 break;
2282 case ND_NEIGHBOR_SOLICIT:
7cee7052 2283 printf("Neighbor Solicitation");
984263bc
MD
2284 break;
2285 case ND_NEIGHBOR_ADVERT:
7cee7052 2286 printf("Neighbor Advertisement");
984263bc
MD
2287 break;
2288 case ND_REDIRECT:
2289 red = (struct nd_redirect *)icp;
7cee7052 2290 printf("Redirect\n");
984263bc
MD
2291 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2292 sizeof(ntop_buf)))
2293 strncpy(ntop_buf, "?", sizeof(ntop_buf));
7cee7052 2294 printf("Destination: %s", ntop_buf);
984263bc
MD
2295 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2296 sizeof(ntop_buf)))
2297 strncpy(ntop_buf, "?", sizeof(ntop_buf));
7cee7052 2298 printf(" New Target: %s", ntop_buf);
984263bc
MD
2299 break;
2300 case ICMP6_NI_QUERY:
7cee7052 2301 printf("Node Information Query");
984263bc
MD
2302 /* XXX ID + Seq + Data */
2303 ni = (struct icmp6_nodeinfo *)icp;
2304 l = end - (u_char *)(ni + 1);
2305 printf(", ");
2306 switch (ntohs(ni->ni_qtype)) {
2307 case NI_QTYPE_NOOP:
7cee7052 2308 printf("NOOP");
984263bc
MD
2309 break;
2310 case NI_QTYPE_SUPTYPES:
7cee7052 2311 printf("Supported qtypes");
984263bc
MD
2312 break;
2313 case NI_QTYPE_FQDN:
7cee7052 2314 printf("DNS name");
984263bc
MD
2315 break;
2316 case NI_QTYPE_NODEADDR:
7cee7052 2317 printf("nodeaddr");
984263bc
MD
2318 break;
2319 case NI_QTYPE_IPV4ADDR:
7cee7052 2320 printf("IPv4 nodeaddr");
984263bc
MD
2321 break;
2322 default:
7cee7052 2323 printf("unknown qtype");
984263bc
MD
2324 break;
2325 }
2326 if (options & F_VERBOSE) {
2327 switch (ni->ni_code) {
2328 case ICMP6_NI_SUBJ_IPV6:
2329 if (l == sizeof(struct in6_addr) &&
2330 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2331 sizeof(ntop_buf)) != NULL) {
7cee7052 2332 printf(", subject=%s(%s)",
984263bc
MD
2333 niqcode[ni->ni_code], ntop_buf);
2334 } else {
2335#if 1
2336 /* backward compat to -W */
7cee7052 2337 printf(", oldfqdn");
984263bc 2338#else
7cee7052 2339 printf(", invalid");
984263bc
MD
2340#endif
2341 }
2342 break;
2343 case ICMP6_NI_SUBJ_FQDN:
2344 if (end == (u_char *)(ni + 1)) {
7cee7052 2345 printf(", no subject");
984263bc
MD
2346 break;
2347 }
2348 printf(", subject=%s", niqcode[ni->ni_code]);
2349 cp = (const u_char *)(ni + 1);
2350 if (dnsdecode(&cp, end, NULL, dnsname,
2351 sizeof(dnsname)) != NULL)
2352 printf("(%s)", dnsname);
2353 else
2354 printf("(invalid)");
2355 break;
2356 case ICMP6_NI_SUBJ_IPV4:
2357 if (l == sizeof(struct in_addr) &&
2358 inet_ntop(AF_INET, ni + 1, ntop_buf,
2359 sizeof(ntop_buf)) != NULL) {
7cee7052 2360 printf(", subject=%s(%s)",
984263bc
MD
2361 niqcode[ni->ni_code], ntop_buf);
2362 } else
7cee7052 2363 printf(", invalid");
984263bc
MD
2364 break;
2365 default:
7cee7052 2366 printf(", invalid");
984263bc
MD
2367 break;
2368 }
2369 }
2370 break;
2371 case ICMP6_NI_REPLY:
7cee7052 2372 printf("Node Information Reply");
984263bc
MD
2373 /* XXX ID + Seq + Data */
2374 ni = (struct icmp6_nodeinfo *)icp;
2375 printf(", ");
2376 switch (ntohs(ni->ni_qtype)) {
2377 case NI_QTYPE_NOOP:
7cee7052 2378 printf("NOOP");
984263bc
MD
2379 break;
2380 case NI_QTYPE_SUPTYPES:
7cee7052 2381 printf("Supported qtypes");
984263bc
MD
2382 break;
2383 case NI_QTYPE_FQDN:
7cee7052 2384 printf("DNS name");
984263bc
MD
2385 break;
2386 case NI_QTYPE_NODEADDR:
7cee7052 2387 printf("nodeaddr");
984263bc
MD
2388 break;
2389 case NI_QTYPE_IPV4ADDR:
7cee7052 2390 printf("IPv4 nodeaddr");
984263bc
MD
2391 break;
2392 default:
7cee7052 2393 printf("unknown qtype");
984263bc
MD
2394 break;
2395 }
2396 if (options & F_VERBOSE) {
2397 if (ni->ni_code > sizeof(nircode) / sizeof(nircode[0]))
2398 printf(", invalid");
2399 else
2400 printf(", %s", nircode[ni->ni_code]);
2401 }
2402 break;
2403 default:
7cee7052 2404 printf("Bad ICMP type: %d", icp->icmp6_type);
984263bc
MD
2405 }
2406}
2407
2408/*
2409 * pr_iph --
2410 * Print an IP6 header.
2411 */
2412void
b5744197 2413pr_iph(struct ip6_hdr *ip6)
984263bc
MD
2414{
2415 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2416 u_int8_t tc;
2417 char ntop_buf[INET6_ADDRSTRLEN];
2418
2419 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2420 tc = (tc >> 4) & 0x0f;
2421 tc |= (ip6->ip6_vfc << 4);
2422
2423 printf("Vr TC Flow Plen Nxt Hlim\n");
2424 printf(" %1x %02x %05x %04x %02x %02x\n",
2425 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2426 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2427 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2428 strncpy(ntop_buf, "?", sizeof(ntop_buf));
2429 printf("%s->", ntop_buf);
2430 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2431 strncpy(ntop_buf, "?", sizeof(ntop_buf));
2432 printf("%s\n", ntop_buf);
2433}
2434
2435/*
2436 * pr_addr --
2437 * Return an ascii host address as a dotted quad and optionally with
2438 * a hostname.
2439 */
2440const char *
b5744197 2441pr_addr(struct sockaddr *addr, int addrlen)
984263bc
MD
2442{
2443 static char buf[NI_MAXHOST];
2444 int flag;
2445
2446#ifdef NI_WITHSCOPEID
2447 flag = NI_WITHSCOPEID;
2448#else
2449 flag = 0;
2450#endif
2451 if ((options & F_HOSTNAME) == 0)
2452 flag |= NI_NUMERICHOST;
2453
2454 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0)
2455 return (buf);
2456 else
2457 return "?";
2458}
2459
2460/*
2461 * pr_retip --
2462 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2463 */
2464void
b5744197 2465pr_retip(struct ip6_hdr *ip6, u_char *end)
984263bc
MD
2466{
2467 u_char *cp = (u_char *)ip6, nh;
2468 int hlen;
2469
2470 if (end - (u_char *)ip6 < sizeof(*ip6)) {
2471 printf("IP6");
2472 goto trunc;
2473 }
2474 pr_iph(ip6);
2475 hlen = sizeof(*ip6);
2476
2477 nh = ip6->ip6_nxt;
2478 cp += hlen;
2479 while (end - cp >= 8) {
2480 switch (nh) {
2481 case IPPROTO_HOPOPTS:
2482 printf("HBH ");
2483 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2484 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2485 break;
2486 case IPPROTO_DSTOPTS:
2487 printf("DSTOPT ");
2488 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2489 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2490 break;
2491 case IPPROTO_FRAGMENT:
2492 printf("FRAG ");
2493 hlen = sizeof(struct ip6_frag);
2494 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2495 break;
2496 case IPPROTO_ROUTING:
2497 printf("RTHDR ");
2498 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2499 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2500 break;
2501#ifdef IPSEC
2502 case IPPROTO_AH:
2503 printf("AH ");
2504 hlen = (((struct ah *)cp)->ah_len+2) << 2;
2505 nh = ((struct ah *)cp)->ah_nxt;
2506 break;
2507#endif
2508 case IPPROTO_ICMPV6:
2509 printf("ICMP6: type = %d, code = %d\n",
2510 *cp, *(cp + 1));
2511 return;
2512 case IPPROTO_ESP:
2513 printf("ESP\n");
2514 return;
2515 case IPPROTO_TCP:
2516 printf("TCP: from port %u, to port %u (decimal)\n",
2517 (*cp * 256 + *(cp + 1)),
2518 (*(cp + 2) * 256 + *(cp + 3)));
2519 return;
2520 case IPPROTO_UDP:
2521 printf("UDP: from port %u, to port %u (decimal)\n",
2522 (*cp * 256 + *(cp + 1)),
2523 (*(cp + 2) * 256 + *(cp + 3)));
2524 return;
2525 default:
2526 printf("Unknown Header(%d)\n", nh);
2527 return;
2528 }
2529
2530 if ((cp += hlen) >= end)
2531 goto trunc;
2532 }
2533 if (end - cp < 8)
2534 goto trunc;
2535
2536 putchar('\n');
2537 return;
2538
2539 trunc:
2540 printf("...\n");
2541 return;
2542}
2543
2544void
b5744197 2545fill(char *bp, char *patp)
984263bc
MD
2546{
2547 register int ii, jj, kk;
2548 int pat[16];
2549 char *cp;
2550
2551 for (cp = patp; *cp; cp++)
2552 if (!isxdigit(*cp))
2553 errx(1, "patterns must be specified as hex digits");
2554 ii = sscanf(patp,
2555 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2556 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2557 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2558 &pat[13], &pat[14], &pat[15]);
2559
2560/* xxx */
2561 if (ii > 0)
2562 for (kk = 0;
2563 kk <= MAXDATALEN - (8 + sizeof(struct timeval) + ii);
2564 kk += ii)
2565 for (jj = 0; jj < ii; ++jj)
2566 bp[jj + kk] = pat[jj];
2567 if (!(options & F_QUIET)) {
7cee7052 2568 printf("PATTERN: 0x");
984263bc 2569 for (jj = 0; jj < ii; ++jj)
7cee7052
SW
2570 printf("%02x", bp[jj] & 0xFF);
2571 printf("\n");
984263bc
MD
2572 }
2573}
2574
2575#ifdef IPSEC
2576#ifdef IPSEC_POLICY_IPSEC
2577int
b5744197 2578setpolicy(int so, char *policy)
984263bc
MD
2579{
2580 char *buf;
2581
2582 if (policy == NULL)
2583 return 0; /* ignore */
2584
2585 buf = ipsec_set_policy(policy, strlen(policy));
2586 if (buf == NULL)
2587 errx(1, "%s", ipsec_strerror());
2588 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2589 ipsec_get_policylen(buf)) < 0)
2590 warnx("Unable to set IPSec policy");
2591 free(buf);
2592
2593 return 0;
2594}
2595#endif
2596#endif
2597
2598char *
b5744197 2599nigroup(char *name)
984263bc
MD
2600{
2601 char *p;
2602 unsigned char *q;
2603 MD5_CTX ctxt;
2604 u_int8_t digest[16];
2605 u_int8_t c;
2606 size_t l;
2607 char hbuf[NI_MAXHOST];
2608 struct in6_addr in6;
2609
2610 p = strchr(name, '.');
2611 if (!p)
2612 p = name + strlen(name);
2613 l = p - name;
2614 if (l > 63 || l > sizeof(hbuf) - 1)
2615 return NULL; /*label too long*/
2616 strncpy(hbuf, name, l);
2617 hbuf[(int)l] = '\0';
2618
2619 for (q = name; *q; q++) {
2620 if (isupper(*q))
2621 *q = tolower(*q);
2622 }
2623
2624 /* generate 8 bytes of pseudo-random value. */
2625 bzero(&ctxt, sizeof(ctxt));
2626 MD5Init(&ctxt);
2627 c = l & 0xff;
2628 MD5Update(&ctxt, &c, sizeof(c));
2629 MD5Update(&ctxt, name, l);
2630 MD5Final(digest, &ctxt);
2631
2632 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
2633 return NULL; /*XXX*/
2634 bcopy(digest, &in6.s6_addr[12], 4);
2635
2636 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2637 return NULL;
2638
2639 return strdup(hbuf);
2640}
2641
2642void
b5744197 2643usage(void)
984263bc 2644{
7cee7052 2645 fprintf(stderr,
984263bc
MD
2646 "usage: ping6 [-dfH"
2647#ifdef IPV6_USE_MIN_MTU
2648 "m"
2649#endif
2650 "nNqtvwW"
2651#ifdef IPV6_REACHCONF
2652 "R"
2653#endif
2654#ifdef IPSEC
2655#ifdef IPSEC_POLICY_IPSEC
2656 "] [-P policy"
2657#else
2658 "AE"
2659#endif
2660#endif
2661 "] [-a [aAclsg]] [-b sockbufsiz] [-c count] \n"
2662 "\t[-I interface] [-i wait] [-l preload] [-p pattern] "
2663 "[-S sourceaddr]\n"
2664 "\t[-s packetsize] [-h hoplimit] [hops...] host\n");
2665 exit(1);
2666}