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1 /*
2 * Copyright (c) 2002-2013 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 /*
30 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. Neither the name of the project nor the names of its contributors
42 * may be used to endorse or promote products derived from this software
43 * without specific prior written permission.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 */
57
58 /*
59 * Copyright (c) 1989, 1993
60 * The Regents of the University of California. All rights reserved.
61 *
62 * This code is derived from software contributed to Berkeley by
63 * Mike Muuss.
64 *
65 * Redistribution and use in source and binary forms, with or without
66 * modification, are permitted provided that the following conditions
67 * are met:
68 * 1. Redistributions of source code must retain the above copyright
69 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in the
72 * documentation and/or other materials provided with the distribution.
73 * 3. All advertising materials mentioning features or use of this software
74 * must display the following acknowledgement:
75 * This product includes software developed by the University of
76 * California, Berkeley and its contributors.
77 * 4. Neither the name of the University nor the names of its contributors
78 * may be used to endorse or promote products derived from this software
79 * without specific prior written permission.
80 *
81 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
82 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
83 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
84 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
85 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
86 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
87 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
88 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
89 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
90 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
91 * SUCH DAMAGE.
92 */
93
94 #include <sys/cdefs.h>
95
96 #ifndef lint
97 __unused static const char copyright[] =
98 "@(#) Copyright (c) 1989, 1993\n\
99 The Regents of the University of California. All rights reserved.\n";
100 #endif /* not lint */
101
102 /*
103 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
104 * measure round-trip-delays and packet loss across network paths.
105 *
106 * Author -
107 * Mike Muuss
108 * U. S. Army Ballistic Research Laboratory
109 * December, 1983
110 *
111 * Status -
112 * Public Domain. Distribution Unlimited.
113 * Bugs -
114 * More statistics could always be gathered.
115 * This program has to run SUID to ROOT to access the ICMP socket.
116 */
117 /*
118 * NOTE:
119 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
120 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
121 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
122 * network attached to 1 or more interfaces)
123 */
124
125 #include <sys/param.h>
126 #include <sys/uio.h>
127 #include <sys/socket.h>
128 #include <sys/time.h>
129
130 #include <net/if.h>
131 #include <net/route.h>
132
133 #include <netinet/in.h>
134 #include <netinet/ip6.h>
135 #include <netinet/icmp6.h>
136 #include <arpa/inet.h>
137 #include <arpa/nameser.h>
138 #include <netdb.h>
139
140 #include <ctype.h>
141 #include <err.h>
142 #include <errno.h>
143 #include <fcntl.h>
144 #include <math.h>
145 #include <signal.h>
146 #include <stdio.h>
147 #include <stdlib.h>
148 #include <string.h>
149 #include <unistd.h>
150 #ifdef HAVE_POLL_H
151 #include <poll.h>
152 #endif
153 #include <sysexits.h>
154
155 #ifdef IPSEC
156 #include <netinet6/ah.h>
157 #include <netinet6/ipsec.h>
158 #endif
159
160 #include "md5.h"
161
162 struct tv32 {
163 u_int32_t tv32_sec;
164 u_int32_t tv32_usec;
165 };
166
167 #define MAXPACKETLEN 131072
168 #define IP6LEN 40
169 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
170 #define ICMP6ECHOTMLEN sizeof(struct tv32)
171 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
172 # define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */
173 /* FQDN case, 64 bits of nonce + 32 bits ttl */
174 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
175 #define EXTRA 256 /* for AH and various other headers. weird. */
176 #define DEFDATALEN ICMP6ECHOTMLEN
177 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
178 #define NROUTES 9 /* number of record route slots */
179
180 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
181 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
182 #define SET(bit) (A(bit) |= B(bit))
183 #define CLR(bit) (A(bit) &= (~B(bit)))
184 #define TST(bit) (A(bit) & B(bit))
185
186 #define F_FLOOD 0x0001
187 #define F_INTERVAL 0x0002
188 #define F_PINGFILLED 0x0008
189 #define F_QUIET 0x0010
190 #define F_RROUTE 0x0020
191 #define F_SO_DEBUG 0x0040
192 #define F_VERBOSE 0x0100
193 #ifdef IPSEC
194 #ifdef IPSEC_POLICY_IPSEC
195 #define F_POLICY 0x0400
196 #else
197 #define F_AUTHHDR 0x0200
198 #define F_ENCRYPT 0x0400
199 #endif /*IPSEC_POLICY_IPSEC*/
200 #endif /*IPSEC*/
201 #define F_NODEADDR 0x0800
202 #define F_FQDN 0x1000
203 #define F_INTERFACE 0x2000
204 #define F_SRCADDR 0x4000
205 #define F_HOSTNAME 0x10000
206 #define F_FQDNOLD 0x20000
207 #define F_NIGROUP 0x40000
208 #define F_SUPTYPES 0x80000
209 #define F_NOMINMTU 0x100000
210 #define F_ONCE 0x200000
211 #define F_AUDIBLE 0x400000
212 #define F_MISSED 0x800000
213 #define F_DONTFRAG 0x1000000
214 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
215 u_int options;
216
217 #define IN6LEN sizeof(struct in6_addr)
218 #define SA6LEN sizeof(struct sockaddr_in6)
219 #define DUMMY_PORT 10101
220
221 #define SIN6(s) ((struct sockaddr_in6 *)(s))
222
223 #define MAXTOS 255
224 /*
225 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
226 * number of received sequence numbers we can keep track of. Change 128
227 * to 8192 for complete accuracy...
228 */
229 #define MAX_DUP_CHK (8 * 8192)
230 int mx_dup_ck = MAX_DUP_CHK;
231 char rcvd_tbl[MAX_DUP_CHK / 8];
232
233 struct addrinfo *res;
234 struct sockaddr_in6 dst; /* who to ping6 */
235 struct sockaddr_in6 src; /* src addr of this packet */
236 socklen_t srclen;
237 int datalen = DEFDATALEN;
238 int s; /* socket file descriptor */
239 u_char outpack[MAXPACKETLEN];
240 char BSPACE = '\b'; /* characters written for flood */
241 char BBELL = '\a'; /* characters written for AUDIBLE */
242 char DOT = '.';
243 char *hostname;
244 int ident; /* process id to identify our packets */
245 u_int8_t nonce[8]; /* nonce field for node information */
246 int hoplimit = -1; /* hoplimit */
247 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
248 u_char *packet = NULL;
249 struct cmsghdr *cm = NULL;
250 char *boundif;
251 unsigned int ifscope;
252 int nocell;
253 #ifdef HAVE_POLL_H
254 struct pollfd fdmaskp[1];
255 #else
256 fd_set *fdmaskp = NULL;
257 int fdmasks;
258 #endif
259
260 /* counters */
261 long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
262 long npackets; /* max packets to transmit */
263 long nreceived; /* # of packets we got back */
264 long nrepeats; /* number of duplicates */
265 long ntransmitted; /* sequence # for outbound packets = #sent */
266 struct timeval interval = {1, 0}; /* interval between packets */
267
268 /* timing */
269 int timing; /* flag to do timing */
270 double tmin = 999999999.0; /* minimum round trip time */
271 double tmax = 0.0; /* maximum round trip time */
272 double tsum = 0.0; /* sum of all times, for doing average */
273 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
274
275 /* for node addresses */
276 u_short naflags;
277
278 /* for ancillary data(advanced API) */
279 struct msghdr smsghdr;
280 struct iovec smsgiov;
281 char *scmsg = NULL;
282
283 volatile sig_atomic_t seenalrm;
284 volatile sig_atomic_t seenint;
285 #ifdef SIGINFO
286 volatile sig_atomic_t seeninfo;
287 #endif
288
289 int rcvtclass = 0;
290
291 int how_so_traffic_class = 0;
292 int so_traffic_class = SO_TC_CTL; /* use control class, by default */
293
294 int main(int, char *[]);
295 void fill(char *, char *);
296 int get_hoplim(struct msghdr *);
297 int get_pathmtu(struct msghdr *);
298 int get_tclass(struct msghdr *);
299 int get_so_traffic_class(struct msghdr *);
300 struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
301 void onsignal(int);
302 void retransmit(void);
303 void onint(int);
304 size_t pingerlen(void);
305 int pinger(void);
306 const char *pr_addr(struct sockaddr *, int);
307 void pr_icmph(struct icmp6_hdr *, u_char *);
308 void pr_iph(struct ip6_hdr *);
309 void pr_suptypes(struct icmp6_nodeinfo *, size_t);
310 void pr_nodeaddr(struct icmp6_nodeinfo *, int);
311 int myechoreply(const struct icmp6_hdr *);
312 int mynireply(const struct icmp6_nodeinfo *);
313 char *dnsdecode(const u_char **, const u_char *, const u_char *,
314 char *, size_t);
315 void pr_pack(u_char *, int, struct msghdr *);
316 void pr_exthdrs(struct msghdr *);
317 void pr_ip6opt(void *, size_t);
318 void pr_rthdr(void *, size_t);
319 int pr_bitrange(u_int32_t, int, int);
320 void pr_retip(struct ip6_hdr *, u_char *);
321 void summary(void);
322 void tvsub(struct timeval *, struct timeval *);
323 int setpolicy(int, char *);
324 char *nigroup(char *);
325 static uint32_t str2svc(const char *);
326 void usage(void);
327
328 int
329 main(int argc, char *argv[])
330 {
331 struct itimerval itimer;
332 struct sockaddr_in6 from;
333 #ifndef HAVE_ARC4RANDOM
334 struct timeval seed;
335 #endif
336 #ifdef HAVE_POLL_H
337 int timeout;
338 #else
339 struct timeval timeout, *tv;
340 #endif
341 struct addrinfo hints;
342 int cc, i;
343 int ch, hold, packlen, preload, optval, ret_ga;
344 u_char *datap;
345 char *e, *target, *ifname = NULL, *gateway = NULL;
346 int ip6optlen = 0;
347 struct cmsghdr *scmsgp = NULL;
348 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
349 u_long lsockbufsize;
350 int sockbufsize = 0;
351 #endif
352 int usepktinfo = 0;
353 struct in6_pktinfo *pktinfo = NULL;
354 #ifdef USE_RFC2292BIS
355 struct ip6_rthdr *rthdr = NULL;
356 #endif
357 #ifdef IPSEC_POLICY_IPSEC
358 char *policy_in = NULL;
359 char *policy_out = NULL;
360 #endif
361 double intval;
362 size_t rthlen;
363 #ifdef IPV6_USE_MIN_MTU
364 int mflag = 0;
365 #endif
366 /* T_CLASS value -1 means default, so -2 means do not bother */
367 int tclass = -2;
368
369 /* just to be sure */
370 memset(&smsghdr, 0, sizeof(smsghdr));
371 memset(&smsgiov, 0, sizeof(smsgiov));
372
373 preload = 0;
374 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
375 #ifndef IPSEC
376 #define ADDOPTS
377 #else
378 #ifdef IPSEC_POLICY_IPSEC
379 #define ADDOPTS "P:"
380 #else
381 #define ADDOPTS "AE"
382 #endif /*IPSEC_POLICY_IPSEC*/
383 #endif
384 while ((ch = getopt(argc, argv,
385 "a:b:B:Cc:DdfHg:h:I:i:k:l:mnNop:qrRS:s:tvwWz:" ADDOPTS)) != -1) {
386 #undef ADDOPTS
387 switch (ch) {
388 case 'a':
389 {
390 char *cp;
391
392 options &= ~F_NOUSERDATA;
393 options |= F_NODEADDR;
394 for (cp = optarg; *cp != '\0'; cp++) {
395 switch (*cp) {
396 case 'a':
397 naflags |= NI_NODEADDR_FLAG_ALL;
398 break;
399 case 'c':
400 case 'C':
401 naflags |= NI_NODEADDR_FLAG_COMPAT;
402 break;
403 case 'l':
404 case 'L':
405 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
406 break;
407 case 's':
408 case 'S':
409 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
410 break;
411 case 'g':
412 case 'G':
413 naflags |= NI_NODEADDR_FLAG_GLOBAL;
414 break;
415 case 'A': /* experimental. not in the spec */
416 #ifdef NI_NODEADDR_FLAG_ANYCAST
417 naflags |= NI_NODEADDR_FLAG_ANYCAST;
418 break;
419 #else
420 errx(1, "-a A is not supported on "
421 "the platform");
422 /*NOTREACHED*/
423 #endif
424 default:
425 usage();
426 /*NOTREACHED*/
427 }
428 }
429 break;
430 }
431 case 'b':
432 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
433 errno = 0;
434 e = NULL;
435 lsockbufsize = strtoul(optarg, &e, 10);
436 sockbufsize = lsockbufsize;
437 if (errno || !*optarg || *e ||
438 sockbufsize != lsockbufsize)
439 errx(1, "invalid socket buffer size");
440 #else
441 errx(1, "-b option ignored: SO_SNDBUF/SO_RCVBUF "
442 "socket options not supported");
443 #endif
444 break;
445 case 'B':
446 boundif = optarg;
447 break;
448 case 'C':
449 nocell++;
450 break;
451 case 'c':
452 npackets = strtol(optarg, &e, 10);
453 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
454 errx(1,
455 "illegal number of packets -- %s", optarg);
456 break;
457 case 'D':
458 options |= F_DONTFRAG;
459 break;
460 case 'd':
461 options |= F_SO_DEBUG;
462 break;
463 case 'f':
464 if (getuid()) {
465 errno = EPERM;
466 errx(1, "Must be superuser to flood ping");
467 }
468 options |= F_FLOOD;
469 setbuf(stdout, (char *)NULL);
470 break;
471 case 'g':
472 gateway = optarg;
473 break;
474 case 'H':
475 options |= F_HOSTNAME;
476 break;
477 case 'h': /* hoplimit */
478 hoplimit = strtol(optarg, &e, 10);
479 if (*optarg == '\0' || *e != '\0')
480 errx(1, "illegal hoplimit %s", optarg);
481 if (255 < hoplimit || hoplimit < -1)
482 errx(1,
483 "illegal hoplimit -- %s", optarg);
484 break;
485 case 'I':
486 ifname = optarg;
487 options |= F_INTERFACE;
488 #ifndef USE_SIN6_SCOPE_ID
489 usepktinfo++;
490 #endif
491 break;
492 case 'i': /* wait between sending packets */
493 intval = strtod(optarg, &e);
494 if (*optarg == '\0' || *e != '\0')
495 errx(1, "illegal timing interval %s", optarg);
496 if (intval < 0.1 && getuid()) {
497 errx(1, "%s: only root may use interval < 0.1s",
498 strerror(EPERM));
499 }
500 interval.tv_sec = (long)intval;
501 interval.tv_usec =
502 (long)((intval - interval.tv_sec) * 1000000);
503 if (interval.tv_sec < 0)
504 errx(1, "illegal timing interval %s", optarg);
505 /* less than 1/hz does not make sense */
506 if (interval.tv_sec == 0 && interval.tv_usec < 1) {
507 warnx("too small interval, raised to .000001");
508 interval.tv_usec = 1;
509 }
510 options |= F_INTERVAL;
511 break;
512 case 'k':
513 how_so_traffic_class++;
514 so_traffic_class = str2svc(optarg);
515 if (so_traffic_class == UINT32_MAX)
516 errx(EX_USAGE, "bad traffic class: `%s'",
517 optarg);
518 break;
519
520 case 'l':
521 if (getuid()) {
522 errno = EPERM;
523 errx(1, "Must be superuser to preload");
524 }
525 preload = strtol(optarg, &e, 10);
526 if (preload < 0 || *optarg == '\0' || *e != '\0')
527 errx(1, "illegal preload value -- %s", optarg);
528 break;
529 case 'm':
530 #ifdef IPV6_USE_MIN_MTU
531 mflag++;
532 break;
533 #else
534 errx(1, "-%c is not supported on this platform", ch);
535 /*NOTREACHED*/
536 #endif
537 case 'n':
538 options &= ~F_HOSTNAME;
539 break;
540 case 'N':
541 options |= F_NIGROUP;
542 break;
543 case 'o':
544 options |= F_ONCE;
545 break;
546 case 'p': /* fill buffer with user pattern */
547 options |= F_PINGFILLED;
548 fill((char *)datap, optarg);
549 break;
550 case 'q':
551 options |= F_QUIET;
552 break;
553 case 'r':
554 options |= F_AUDIBLE;
555 break;
556 case 'R':
557 options |= F_MISSED;
558 break;
559 case 'S':
560 memset(&hints, 0, sizeof(struct addrinfo));
561 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
562 hints.ai_family = AF_INET6;
563 hints.ai_socktype = SOCK_RAW;
564 hints.ai_protocol = IPPROTO_ICMPV6;
565
566 ret_ga = getaddrinfo(optarg, NULL, &hints, &res);
567 if (ret_ga) {
568 errx(1, "invalid source address: %s",
569 gai_strerror(ret_ga));
570 }
571 /*
572 * res->ai_family must be AF_INET6 and res->ai_addrlen
573 * must be sizeof(src).
574 */
575 memcpy(&src, res->ai_addr, res->ai_addrlen);
576 srclen = res->ai_addrlen;
577 freeaddrinfo(res);
578 res = NULL;
579 options |= F_SRCADDR;
580 break;
581 case 's': /* size of packet to send */
582 datalen = strtol(optarg, &e, 10);
583 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
584 errx(1, "illegal datalen value -- %s", optarg);
585 if (datalen > MAXDATALEN) {
586 errx(1,
587 "datalen value too large, maximum is %d",
588 MAXDATALEN);
589 }
590 break;
591 case 't':
592 options &= ~F_NOUSERDATA;
593 options |= F_SUPTYPES;
594 break;
595 case 'v':
596 options |= F_VERBOSE;
597 break;
598 case 'w':
599 options &= ~F_NOUSERDATA;
600 options |= F_FQDN;
601 break;
602 case 'W':
603 options &= ~F_NOUSERDATA;
604 options |= F_FQDNOLD;
605 break;
606 case 'z':
607 tclass = (int)strtol(optarg, &e, 10);
608 if (tclass < -1 || *optarg == '\0' || *e != '\0')
609 errx(1, "illegal TOS value -- %s", optarg);
610 if (tclass > MAXTOS)
611 errx(1,
612 "TOS value too large, maximum is %d",
613 MAXTOS);
614 rcvtclass = 1;
615 break;
616 #ifdef IPSEC
617 #ifdef IPSEC_POLICY_IPSEC
618 case 'P':
619 options |= F_POLICY;
620 if (!strncmp("in", optarg, 2)) {
621 if ((policy_in = strdup(optarg)) == NULL)
622 errx(1, "strdup");
623 } else if (!strncmp("out", optarg, 3)) {
624 if ((policy_out = strdup(optarg)) == NULL)
625 errx(1, "strdup");
626 } else
627 errx(1, "invalid security policy");
628 break;
629 #else
630 case 'A':
631 options |= F_AUTHHDR;
632 break;
633 case 'E':
634 options |= F_ENCRYPT;
635 break;
636 #endif /*IPSEC_POLICY_IPSEC*/
637 #endif /*IPSEC*/
638 default:
639 usage();
640 /*NOTREACHED*/
641 }
642 }
643
644 if (boundif != NULL && (ifscope = if_nametoindex(boundif)) == 0)
645 errx(1, "bad interface name");
646
647 argc -= optind;
648 argv += optind;
649
650 if (argc < 1) {
651 usage();
652 /*NOTREACHED*/
653 }
654
655 if (argc > 1) {
656 #ifdef IPV6_RECVRTHDR /* 2292bis */
657 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
658 argc - 1));
659 #else /* RFC2292 */
660 rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1);
661 #endif
662 if (rthlen == 0) {
663 errx(1, "too many intermediate hops");
664 /*NOTREACHED*/
665 }
666 ip6optlen += rthlen;
667 }
668
669 if (options & F_NIGROUP) {
670 target = nigroup(argv[argc - 1]);
671 if (target == NULL) {
672 usage();
673 /*NOTREACHED*/
674 }
675 } else
676 target = argv[argc - 1];
677
678 /* getaddrinfo */
679 memset(&hints, 0, sizeof(struct addrinfo));
680 hints.ai_flags = AI_CANONNAME;
681 hints.ai_family = AF_INET6;
682 hints.ai_socktype = SOCK_RAW;
683 hints.ai_protocol = IPPROTO_ICMPV6;
684
685 ret_ga = getaddrinfo(target, NULL, &hints, &res);
686 if (ret_ga)
687 errx(1, "getaddrinfo -- %s", gai_strerror(ret_ga));
688 if (res->ai_canonname)
689 hostname = res->ai_canonname;
690 else
691 hostname = target;
692
693 if (!res->ai_addr)
694 errx(1, "getaddrinfo failed");
695
696 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
697
698 res->ai_socktype = getuid() ? SOCK_DGRAM : SOCK_RAW;
699 res->ai_protocol = IPPROTO_ICMPV6;
700
701 if ((s = socket(res->ai_family, res->ai_socktype,
702 res->ai_protocol)) < 0)
703 err(1, "socket");
704
705 if (ifscope != 0) {
706 if (setsockopt(s, IPPROTO_IPV6, IPV6_BOUND_IF,
707 (char *)&ifscope, sizeof (ifscope)) != 0)
708 err(1, "setsockopt(IPV6_BOUND_IF)");
709 }
710
711 if (nocell != 0) {
712 if (setsockopt(s, IPPROTO_IPV6, IPV6_NO_IFT_CELLULAR,
713 (char *)&nocell, sizeof (nocell)) != 0)
714 err(1, "setsockopt(IPV6_NO_IFT_CELLULAR)");
715 }
716
717 /* set the source address if specified. */
718 if ((options & F_SRCADDR) &&
719 bind(s, (struct sockaddr *)&src, srclen) != 0) {
720 err(1, "bind");
721 }
722
723 /* set the gateway (next hop) if specified */
724 if (gateway) {
725 struct addrinfo ghints, *gres;
726 int error;
727
728 memset(&ghints, 0, sizeof(ghints));
729 ghints.ai_family = AF_INET6;
730 ghints.ai_socktype = SOCK_RAW;
731 ghints.ai_protocol = IPPROTO_ICMPV6;
732
733 error = getaddrinfo(gateway, NULL, &hints, &gres);
734 if (error) {
735 errx(1, "getaddrinfo for the gateway %s: %s",
736 gateway, gai_strerror(error));
737 }
738 if (gres->ai_next && (options & F_VERBOSE))
739 warnx("gateway resolves to multiple addresses");
740
741 if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP,
742 gres->ai_addr, gres->ai_addrlen)) {
743 err(1, "setsockopt(IPV6_NEXTHOP)");
744 }
745
746 freeaddrinfo(gres);
747 }
748
749 /*
750 * let the kerel pass extension headers of incoming packets,
751 * for privileged socket options
752 */
753 if ((options & F_VERBOSE) != 0) {
754 int opton = 1;
755
756 #ifdef IPV6_RECVHOPOPTS
757 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
758 sizeof(opton)))
759 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
760 #else /* old adv. API */
761 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
762 sizeof(opton)))
763 err(1, "setsockopt(IPV6_HOPOPTS)");
764 #endif
765 #ifdef IPV6_RECVDSTOPTS
766 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
767 sizeof(opton)))
768 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
769 #else /* old adv. API */
770 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
771 sizeof(opton)))
772 err(1, "setsockopt(IPV6_DSTOPTS)");
773 #endif
774 #ifdef IPV6_RECVRTHDRDSTOPTS
775 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
776 sizeof(opton)))
777 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
778 #endif
779 }
780
781 /* revoke root privilege */
782 if (seteuid(getuid()) != 0)
783 err(1, "seteuid() failed");
784 if (setuid(getuid()) != 0)
785 err(1, "setuid() failed");
786
787 if ((options & F_FLOOD) && (options & F_INTERVAL))
788 errx(1, "-f and -i incompatible options");
789
790 if ((options & F_NOUSERDATA) == 0) {
791 if (datalen >= sizeof(struct tv32)) {
792 /* we can time transfer */
793 timing = 1;
794 } else
795 timing = 0;
796 /* in F_VERBOSE case, we may get non-echoreply packets*/
797 if (options & F_VERBOSE)
798 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
799 else
800 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
801 } else {
802 /* suppress timing for node information query */
803 timing = 0;
804 datalen = 2048;
805 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
806 }
807
808 if (!(packet = (u_char *)malloc((u_int)packlen)))
809 err(1, "Unable to allocate packet");
810 if (!(options & F_PINGFILLED))
811 for (i = ICMP6ECHOLEN; i < packlen; ++i)
812 *datap++ = i;
813
814 ident = getpid() & 0xFFFF;
815 #ifndef HAVE_ARC4RANDOM
816 gettimeofday(&seed, NULL);
817 srand((unsigned int)(seed.tv_sec ^ seed.tv_usec ^ (long)ident));
818 memset(nonce, 0, sizeof(nonce));
819 for (i = 0; i < sizeof(nonce); i += sizeof(int))
820 *((int *)&nonce[i]) = rand();
821 #else
822 memset(nonce, 0, sizeof(nonce));
823 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
824 *((u_int32_t *)&nonce[i]) = arc4random();
825 #endif
826 optval = 1;
827 if (options & F_DONTFRAG)
828 if (setsockopt(s, IPPROTO_IPV6, IPV6_DONTFRAG,
829 &optval, sizeof(optval)) == -1)
830 err(1, "IPV6_DONTFRAG");
831 hold = 1;
832 if (options & F_SO_DEBUG)
833 (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
834 sizeof(hold));
835
836 hold = 1;
837 (void) setsockopt(s, SOL_SOCKET, SO_RECV_ANYIF, (char *)&hold,
838 sizeof(hold));
839
840 optval = IPV6_DEFHLIM;
841 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
842 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
843 &optval, sizeof(optval)) == -1)
844 err(1, "IPV6_MULTICAST_HOPS");
845 #ifdef IPV6_USE_MIN_MTU
846 if (mflag != 1) {
847 optval = mflag > 1 ? 0 : 1;
848
849 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
850 &optval, sizeof(optval)) == -1)
851 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
852 }
853 #ifdef IPV6_RECVPATHMTU
854 else {
855 optval = 1;
856 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
857 &optval, sizeof(optval)) == -1)
858 err(1, "setsockopt(IPV6_RECVPATHMTU)");
859 }
860 #endif /* IPV6_RECVPATHMTU */
861 #endif /* IPV6_USE_MIN_MTU */
862
863 #ifdef IPSEC
864 #ifdef IPSEC_POLICY_IPSEC
865 if (options & F_POLICY) {
866 if (setpolicy(s, policy_in) < 0)
867 errx(1, "%s", ipsec_strerror());
868 if (setpolicy(s, policy_out) < 0)
869 errx(1, "%s", ipsec_strerror());
870 }
871 #else
872 if (options & F_AUTHHDR) {
873 optval = IPSEC_LEVEL_REQUIRE;
874 #ifdef IPV6_AUTH_TRANS_LEVEL
875 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
876 &optval, sizeof(optval)) == -1)
877 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
878 #else /* old def */
879 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
880 &optval, sizeof(optval)) == -1)
881 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
882 #endif
883 }
884 if (options & F_ENCRYPT) {
885 optval = IPSEC_LEVEL_REQUIRE;
886 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
887 &optval, sizeof(optval)) == -1)
888 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
889 }
890 #endif /*IPSEC_POLICY_IPSEC*/
891 #endif
892
893 #ifdef ICMP6_FILTER
894 {
895 struct icmp6_filter filt;
896 if (!(options & F_VERBOSE)) {
897 ICMP6_FILTER_SETBLOCKALL(&filt);
898 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
899 (options & F_NODEADDR) || (options & F_SUPTYPES))
900 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
901 else
902 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
903 } else {
904 ICMP6_FILTER_SETPASSALL(&filt);
905 }
906 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
907 sizeof(filt)) < 0)
908 err(1, "setsockopt(ICMP6_FILTER)");
909 }
910 #endif /*ICMP6_FILTER*/
911
912 /* let the kerel pass extension headers of incoming packets */
913 if ((options & F_VERBOSE) != 0) {
914 int opton = 1;
915
916 #ifdef IPV6_RECVRTHDR
917 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
918 sizeof(opton)))
919 err(1, "setsockopt(IPV6_RECVRTHDR)");
920 #else /* old adv. API */
921 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
922 sizeof(opton)))
923 err(1, "setsockopt(IPV6_RTHDR)");
924 #endif
925 }
926
927 if (tclass != -2) {
928 int on = 1;
929
930 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVTCLASS, &on,
931 sizeof(on)))
932 err(1, "setsockopt(IPV6_RECVTCLASS)");
933
934 if (setsockopt(s, IPPROTO_IPV6, IPV6_TCLASS, &tclass,
935 sizeof(tclass)))
936 err(1, "setsockopt(IPV6_TCLASS)");
937 }
938
939 /*
940 optval = 1;
941 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
942 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
943 &optval, sizeof(optval)) == -1)
944 err(1, "IPV6_MULTICAST_LOOP");
945 */
946
947 /* Specify the outgoing interface and/or the source address */
948 if (usepktinfo)
949 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
950
951 if (hoplimit != -1)
952 ip6optlen += CMSG_SPACE(sizeof(int));
953
954 #ifdef IPV6_USE_MIN_MTU
955 if (mflag != 1)
956 ip6optlen += CMSG_SPACE(sizeof(int));
957 #endif /* IPV6_USE_MIN_MTU */
958
959 if (tclass != -2)
960 ip6optlen += CMSG_SPACE(sizeof(int));
961
962 if (how_so_traffic_class < 2 && so_traffic_class >= 0) {
963 (void) setsockopt(s, SOL_SOCKET, SO_TRAFFIC_CLASS,
964 (void *)&so_traffic_class, sizeof (so_traffic_class));
965 }
966 if (how_so_traffic_class > 0) {
967 int on = 1;
968 (void) setsockopt(s, SOL_SOCKET, SO_RECV_TRAFFIC_CLASS,
969 (void *)&on, sizeof (on));
970 }
971 if (how_so_traffic_class > 1)
972 ip6optlen += CMSG_SPACE(sizeof(int));
973
974 /* set IP6 packet options */
975 if (ip6optlen) {
976 if ((scmsg = (char *)malloc(ip6optlen)) == 0)
977 errx(1, "can't allocate enough memory");
978 smsghdr.msg_control = (caddr_t)scmsg;
979 smsghdr.msg_controllen = ip6optlen;
980 scmsgp = (struct cmsghdr *)scmsg;
981 }
982 if (usepktinfo) {
983 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
984 memset(pktinfo, 0, sizeof(*pktinfo));
985 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
986 scmsgp->cmsg_level = IPPROTO_IPV6;
987 scmsgp->cmsg_type = IPV6_PKTINFO;
988 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
989 }
990
991 /* set the outgoing interface */
992 if (ifname) {
993 #ifndef USE_SIN6_SCOPE_ID
994 /* pktinfo must have already been allocated */
995 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
996 errx(1, "%s: invalid interface name", ifname);
997 #else
998 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
999 errx(1, "%s: invalid interface name", ifname);
1000 #endif
1001 }
1002 if (hoplimit != -1) {
1003 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1004 scmsgp->cmsg_level = IPPROTO_IPV6;
1005 scmsgp->cmsg_type = IPV6_HOPLIMIT;
1006 *(int *)(CMSG_DATA(scmsgp)) = hoplimit;
1007
1008 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1009 }
1010
1011 #ifdef IPV6_USE_MIN_MTU
1012 if (mflag != 1) {
1013 optval = mflag > 1 ? 0 : 1;
1014
1015 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1016 scmsgp->cmsg_level = IPPROTO_IPV6;
1017 scmsgp->cmsg_type = IPV6_USE_MIN_MTU;
1018 *(int *)(CMSG_DATA(scmsgp)) = optval;
1019
1020 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1021 }
1022 #endif /* IPV6_USE_MIN_MTU */
1023
1024 if (argc > 1) { /* some intermediate addrs are specified */
1025 int hops, error;
1026 #ifdef USE_RFC2292BIS
1027 int rthdrlen;
1028 #endif
1029
1030 #ifdef USE_RFC2292BIS
1031 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
1032 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
1033 scmsgp->cmsg_level = IPPROTO_IPV6;
1034 scmsgp->cmsg_type = IPV6_RTHDR;
1035 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
1036 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
1037 IPV6_RTHDR_TYPE_0, argc - 1);
1038 if (rthdr == NULL)
1039 errx(1, "can't initialize rthdr");
1040 #else /* old advanced API */
1041 if ((scmsgp = (struct cmsghdr *)inet6_rthdr_init(scmsgp,
1042 IPV6_RTHDR_TYPE_0)) == 0)
1043 errx(1, "can't initialize rthdr");
1044 #endif /* USE_RFC2292BIS */
1045
1046 for (hops = 0; hops < argc - 1; hops++) {
1047 struct addrinfo *iaip;
1048
1049 if ((error = getaddrinfo(argv[hops], NULL, &hints,
1050 &iaip)))
1051 errx(1, "%s", gai_strerror(error));
1052 if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6)
1053 errx(1,
1054 "bad addr family of an intermediate addr");
1055
1056 #ifdef USE_RFC2292BIS
1057 if (inet6_rth_add(rthdr,
1058 &(SIN6(iaip->ai_addr))->sin6_addr))
1059 errx(1, "can't add an intermediate node");
1060 #else /* old advanced API */
1061 if (inet6_rthdr_add(scmsgp,
1062 &(SIN6(iaip->ai_addr))->sin6_addr,
1063 IPV6_RTHDR_LOOSE))
1064 errx(1, "can't add an intermediate node");
1065 #endif /* USE_RFC2292BIS */
1066 freeaddrinfo(iaip);
1067 }
1068
1069 #ifndef USE_RFC2292BIS
1070 if (inet6_rthdr_lasthop(scmsgp, IPV6_RTHDR_LOOSE))
1071 errx(1, "can't set the last flag");
1072 #endif
1073
1074 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1075 }
1076
1077 if (tclass != -2) {
1078 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1079 scmsgp->cmsg_level = IPPROTO_IPV6;
1080 scmsgp->cmsg_type = IPV6_TCLASS;
1081 *(int *)(CMSG_DATA(scmsgp)) = tclass;
1082
1083 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1084 }
1085 if (how_so_traffic_class > 1 && so_traffic_class >= 0) {
1086 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1087 scmsgp->cmsg_level = SOL_SOCKET;
1088 scmsgp->cmsg_type = SO_TRAFFIC_CLASS;
1089 *(int *)(CMSG_DATA(scmsgp)) = so_traffic_class;
1090
1091 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1092 }
1093 if (!(options & F_SRCADDR)) {
1094 /*
1095 * get the source address. XXX since we revoked the root
1096 * privilege, we cannot use a raw socket for this.
1097 */
1098 int dummy;
1099 socklen_t len = sizeof(src);
1100
1101 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1102 err(1, "UDP socket");
1103
1104 if (ifscope != 0) {
1105 if (setsockopt(dummy, IPPROTO_IPV6, IPV6_BOUND_IF,
1106 (char *)&ifscope, sizeof (ifscope)) != 0)
1107 err(1, "setsockopt(IPV6_BOUND_IF)");
1108 }
1109
1110 if (nocell != 0) {
1111 if (setsockopt(dummy, IPPROTO_IPV6, IPV6_NO_IFT_CELLULAR,
1112 (char *)&nocell, sizeof (nocell)) != 0)
1113 err(1, "setsockopt(IPV6_NO_IFT_CELLULAR)");
1114 }
1115
1116 src.sin6_family = AF_INET6;
1117 src.sin6_addr = dst.sin6_addr;
1118 src.sin6_port = ntohs(DUMMY_PORT);
1119 src.sin6_scope_id = dst.sin6_scope_id;
1120
1121 #ifdef USE_RFC2292BIS
1122 if (pktinfo &&
1123 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
1124 (void *)pktinfo, sizeof(*pktinfo)))
1125 err(1, "UDP setsockopt(IPV6_PKTINFO)");
1126
1127 if (hoplimit != -1 &&
1128 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
1129 (void *)&hoplimit, sizeof(hoplimit)))
1130 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
1131
1132 if (hoplimit != -1 &&
1133 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
1134 (void *)&hoplimit, sizeof(hoplimit)))
1135 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
1136
1137 if (rthdr &&
1138 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
1139 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
1140 err(1, "UDP setsockopt(IPV6_RTHDR)");
1141 #else /* old advanced API */
1142 if (smsghdr.msg_control &&
1143 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS,
1144 (void *)smsghdr.msg_control, smsghdr.msg_controllen))
1145 err(1, "UDP setsockopt(IPV6_PKTOPTIONS)");
1146 #endif
1147
1148 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
1149 err(1, "UDP connect");
1150
1151 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
1152 err(1, "getsockname");
1153
1154 close(dummy);
1155 }
1156
1157 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
1158 if (sockbufsize) {
1159 if (datalen > sockbufsize)
1160 warnx("you need -b to increase socket buffer size");
1161 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
1162 sizeof(sockbufsize)) < 0)
1163 err(1, "setsockopt(SO_SNDBUF)");
1164 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
1165 sizeof(sockbufsize)) < 0)
1166 err(1, "setsockopt(SO_RCVBUF)");
1167 }
1168 else {
1169 if (datalen > 8 * 1024) /*XXX*/
1170 warnx("you need -b to increase socket buffer size");
1171 /*
1172 * When pinging the broadcast address, you can get a lot of
1173 * answers. Doing something so evil is useful if you are trying
1174 * to stress the ethernet, or just want to fill the arp cache
1175 * to get some stuff for /etc/ethers.
1176 */
1177 hold = 48 * 1024;
1178 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
1179 sizeof(hold));
1180 }
1181 #endif
1182
1183 optval = 1;
1184 #ifndef USE_SIN6_SCOPE_ID
1185 #ifdef IPV6_RECVPKTINFO
1186 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
1187 sizeof(optval)) < 0)
1188 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
1189 #else /* old adv. API */
1190 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
1191 sizeof(optval)) < 0)
1192 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
1193 #endif
1194 #endif /* USE_SIN6_SCOPE_ID */
1195 #ifdef IPV6_RECVHOPLIMIT
1196 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
1197 sizeof(optval)) < 0)
1198 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
1199 #else /* old adv. API */
1200 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
1201 sizeof(optval)) < 0)
1202 warn("setsockopt(IPV6_HOPLIMIT, %d, %lu)",
1203 optval, sizeof(optval)); /* XXX err? */
1204 #endif
1205
1206 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
1207 (unsigned long)(pingerlen() - 8));
1208 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
1209 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
1210
1211 while (preload--) /* Fire off them quickies. */
1212 (void)pinger();
1213
1214 (void)signal(SIGINT, onsignal);
1215 #ifdef SIGINFO
1216 (void)signal(SIGINFO, onsignal);
1217 #endif
1218
1219 if ((options & F_FLOOD) == 0) {
1220 (void)signal(SIGALRM, onsignal);
1221 itimer.it_interval = interval;
1222 itimer.it_value = interval;
1223 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1224 if (ntransmitted == 0)
1225 retransmit();
1226 }
1227
1228 #ifndef HAVE_POLL_H
1229 fdmasks = howmany(s + 1, NFDBITS) * sizeof(fd_mask);
1230 if ((fdmaskp = malloc(fdmasks)) == NULL)
1231 err(1, "malloc");
1232 #endif
1233
1234 seenalrm = seenint = 0;
1235 #ifdef SIGINFO
1236 seeninfo = 0;
1237 #endif
1238
1239 /* For control (ancillary) data received from recvmsg() */
1240 cm = (struct cmsghdr *)malloc(CONTROLLEN);
1241 if (cm == NULL)
1242 err(1, "malloc");
1243
1244 for (;;) {
1245 struct msghdr m;
1246 struct iovec iov[2];
1247
1248 /* signal handling */
1249 if (seenalrm) {
1250 /* last packet sent, timeout reached? */
1251 if (npackets && ntransmitted >= npackets)
1252 break;
1253 retransmit();
1254 seenalrm = 0;
1255 continue;
1256 }
1257 if (seenint) {
1258 onint(SIGINT);
1259 seenint = 0;
1260 continue;
1261 }
1262 #ifdef SIGINFO
1263 if (seeninfo) {
1264 summary();
1265 seeninfo = 0;
1266 continue;
1267 }
1268 #endif
1269
1270 if (options & F_FLOOD) {
1271 (void)pinger();
1272 #ifdef HAVE_POLL_H
1273 timeout = 10;
1274 #else
1275 timeout.tv_sec = 0;
1276 timeout.tv_usec = 10000;
1277 tv = &timeout;
1278 #endif
1279 } else {
1280 #ifdef HAVE_POLL_H
1281 timeout = INFTIM;
1282 #else
1283 tv = NULL;
1284 #endif
1285 }
1286 #ifdef HAVE_POLL_H
1287 fdmaskp[0].fd = s;
1288 fdmaskp[0].events = POLLIN;
1289 cc = poll(fdmaskp, 1, timeout);
1290 #else
1291 memset(fdmaskp, 0, fdmasks);
1292 FD_SET(s, fdmaskp);
1293 cc = select(s + 1, fdmaskp, NULL, NULL, tv);
1294 #endif
1295 if (cc < 0) {
1296 if (errno != EINTR) {
1297 #ifdef HAVE_POLL_H
1298 warn("poll");
1299 #else
1300 warn("select");
1301 #endif
1302 sleep(1);
1303 }
1304 continue;
1305 } else if (cc == 0)
1306 continue;
1307
1308 m.msg_name = (caddr_t)&from;
1309 m.msg_namelen = sizeof(from);
1310 memset(&iov, 0, sizeof(iov));
1311 iov[0].iov_base = (caddr_t)packet;
1312 iov[0].iov_len = packlen;
1313 m.msg_iov = iov;
1314 m.msg_iovlen = 1;
1315 memset(cm, 0, CONTROLLEN);
1316 m.msg_control = (void *)cm;
1317 m.msg_controllen = CONTROLLEN;
1318
1319 cc = recvmsg(s, &m, 0);
1320 if (cc < 0) {
1321 if (errno != EINTR) {
1322 warn("recvmsg");
1323 sleep(1);
1324 }
1325 continue;
1326 } else if (cc == 0) {
1327 int mtu;
1328
1329 /*
1330 * receive control messages only. Process the
1331 * exceptions (currently the only possibility is
1332 * a path MTU notification.)
1333 */
1334 if ((mtu = get_pathmtu(&m)) > 0) {
1335 if ((options & F_VERBOSE) != 0) {
1336 printf("new path MTU (%d) is "
1337 "notified\n", mtu);
1338 }
1339 }
1340 continue;
1341 } else {
1342 /*
1343 * an ICMPv6 message (probably an echoreply) arrived.
1344 */
1345 pr_pack(packet, cc, &m);
1346 }
1347 if (((options & F_ONCE) != 0 && nreceived > 0) ||
1348 (npackets > 0 && nreceived >= npackets))
1349 break;
1350 if (ntransmitted - nreceived - 1 > nmissedmax) {
1351 nmissedmax = ntransmitted - nreceived - 1;
1352 if (options & F_MISSED)
1353 (void)write(STDOUT_FILENO, &BBELL, 1);
1354 }
1355 }
1356 summary();
1357
1358 if (res != NULL)
1359 freeaddrinfo(res);
1360
1361 if (packet != NULL)
1362 free(packet);
1363
1364 if (cm != NULL)
1365 free(cm);
1366
1367 if (scmsg != NULL)
1368 free(scmsg);
1369
1370 #ifndef HAVE_POLL_H
1371 if (fdmaskp != NULL)
1372 free(fdmaskp);
1373 #endif
1374
1375 exit(nreceived == 0 ? 2 : 0);
1376 }
1377
1378 void
1379 onsignal(int sig)
1380 {
1381
1382 switch (sig) {
1383 case SIGALRM:
1384 seenalrm++;
1385 break;
1386 case SIGINT:
1387 seenint++;
1388 break;
1389 #ifdef SIGINFO
1390 case SIGINFO:
1391 seeninfo++;
1392 break;
1393 #endif
1394 }
1395 }
1396
1397 /*
1398 * retransmit --
1399 * This routine transmits another ping6.
1400 */
1401 void
1402 retransmit(void)
1403 {
1404 struct itimerval itimer;
1405
1406 if (pinger() == 0)
1407 return;
1408
1409 /*
1410 * If we're not transmitting any more packets, change the timer
1411 * to wait two round-trip times if we've received any packets or
1412 * ten seconds if we haven't.
1413 */
1414 #define MAXWAIT 10
1415 if (nreceived) {
1416 itimer.it_value.tv_sec = 2 * tmax / 1000;
1417 if (itimer.it_value.tv_sec == 0)
1418 itimer.it_value.tv_sec = 1;
1419 } else
1420 itimer.it_value.tv_sec = MAXWAIT;
1421 itimer.it_interval.tv_sec = 0;
1422 itimer.it_interval.tv_usec = 0;
1423 itimer.it_value.tv_usec = 0;
1424
1425 (void)signal(SIGALRM, onsignal);
1426 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1427 }
1428
1429 /*
1430 * pinger --
1431 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1432 * will be added on by the kernel. The ID field is our UNIX process ID,
1433 * and the sequence number is an ascending integer. The first 8 bytes
1434 * of the data portion are used to hold a UNIX "timeval" struct in VAX
1435 * byte-order, to compute the round-trip time.
1436 */
1437 size_t
1438 pingerlen(void)
1439 {
1440 size_t l;
1441
1442 if (options & F_FQDN)
1443 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1444 else if (options & F_FQDNOLD)
1445 l = ICMP6_NIQLEN;
1446 else if (options & F_NODEADDR)
1447 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1448 else if (options & F_SUPTYPES)
1449 l = ICMP6_NIQLEN;
1450 else
1451 l = ICMP6ECHOLEN + datalen;
1452
1453 return l;
1454 }
1455
1456 int
1457 pinger(void)
1458 {
1459 struct icmp6_hdr *icp;
1460 struct iovec iov[2];
1461 int i, cc;
1462 struct icmp6_nodeinfo *nip;
1463 int seq;
1464
1465 if (npackets && ntransmitted >= npackets)
1466 return(-1); /* no more transmission */
1467
1468 icp = (struct icmp6_hdr *)outpack;
1469 nip = (struct icmp6_nodeinfo *)outpack;
1470 memset(icp, 0, sizeof(*icp));
1471 icp->icmp6_cksum = 0;
1472 seq = ntransmitted++;
1473 CLR(seq % mx_dup_ck);
1474
1475 if (options & F_FQDN) {
1476 icp->icmp6_type = ICMP6_NI_QUERY;
1477 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1478 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1479 nip->ni_flags = htons(0);
1480
1481 memcpy(nip->icmp6_ni_nonce, nonce,
1482 sizeof(nip->icmp6_ni_nonce));
1483 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1484
1485 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1486 sizeof(dst.sin6_addr));
1487 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1488 datalen = 0;
1489 } else if (options & F_FQDNOLD) {
1490 /* packet format in 03 draft - no Subject data on queries */
1491 icp->icmp6_type = ICMP6_NI_QUERY;
1492 icp->icmp6_code = 0; /* code field is always 0 */
1493 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1494 nip->ni_flags = htons(0);
1495
1496 memcpy(nip->icmp6_ni_nonce, nonce,
1497 sizeof(nip->icmp6_ni_nonce));
1498 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1499
1500 cc = ICMP6_NIQLEN;
1501 datalen = 0;
1502 } else if (options & F_NODEADDR) {
1503 icp->icmp6_type = ICMP6_NI_QUERY;
1504 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1505 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1506 nip->ni_flags = naflags;
1507
1508 memcpy(nip->icmp6_ni_nonce, nonce,
1509 sizeof(nip->icmp6_ni_nonce));
1510 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1511
1512 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1513 sizeof(dst.sin6_addr));
1514 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1515 datalen = 0;
1516 } else if (options & F_SUPTYPES) {
1517 icp->icmp6_type = ICMP6_NI_QUERY;
1518 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1519 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1520 /* we support compressed bitmap */
1521 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1522
1523 memcpy(nip->icmp6_ni_nonce, nonce,
1524 sizeof(nip->icmp6_ni_nonce));
1525 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1526 cc = ICMP6_NIQLEN;
1527 datalen = 0;
1528 } else {
1529 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1530 icp->icmp6_code = 0;
1531 icp->icmp6_id = htons(ident);
1532 icp->icmp6_seq = ntohs(seq);
1533 if (timing) {
1534 struct timeval tv;
1535 struct tv32 *tv32;
1536 (void)gettimeofday(&tv, NULL);
1537 tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN];
1538 tv32->tv32_sec = htonl(tv.tv_sec);
1539 tv32->tv32_usec = htonl(tv.tv_usec);
1540 }
1541 cc = ICMP6ECHOLEN + datalen;
1542 }
1543
1544 #ifdef DIAGNOSTIC
1545 if (pingerlen() != cc)
1546 errx(1, "internal error; length mismatch");
1547 #endif
1548
1549 smsghdr.msg_name = (caddr_t)&dst;
1550 smsghdr.msg_namelen = sizeof(dst);
1551 memset(&iov, 0, sizeof(iov));
1552 iov[0].iov_base = (caddr_t)outpack;
1553 iov[0].iov_len = cc;
1554 smsghdr.msg_iov = iov;
1555 smsghdr.msg_iovlen = 1;
1556
1557 i = sendmsg(s, &smsghdr, 0);
1558
1559 if (i < 0 || i != cc) {
1560 if (i < 0)
1561 warn("sendmsg");
1562 (void)printf("ping6: wrote %s %d chars, ret=%d\n",
1563 hostname, cc, i);
1564 }
1565 if (!(options & F_QUIET) && options & F_FLOOD)
1566 (void)write(STDOUT_FILENO, &DOT, 1);
1567
1568 return(0);
1569 }
1570
1571 int
1572 myechoreply(const struct icmp6_hdr *icp)
1573 {
1574 if (ntohs(icp->icmp6_id) == ident)
1575 return 1;
1576 else
1577 return 0;
1578 }
1579
1580 int
1581 mynireply(const struct icmp6_nodeinfo *nip)
1582 {
1583 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1584 nonce + sizeof(u_int16_t),
1585 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1586 return 1;
1587 else
1588 return 0;
1589 }
1590
1591 char *
1592 dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf,
1593 size_t bufsiz)
1594 /*base for compressed name*/
1595 {
1596 int i;
1597 const u_char *cp;
1598 char cresult[NS_MAXDNAME + 1];
1599 const u_char *comp;
1600 int l;
1601
1602 cp = *sp;
1603 *buf = '\0';
1604
1605 if (cp >= ep)
1606 return NULL;
1607 while (cp < ep) {
1608 i = *cp;
1609 if (i == 0 || cp != *sp) {
1610 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1611 return NULL; /*result overrun*/
1612 }
1613 if (i == 0)
1614 break;
1615 cp++;
1616
1617 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1618 /* DNS compression */
1619 if (!base)
1620 return NULL;
1621
1622 comp = base + (i & 0x3f);
1623 if (dnsdecode(&comp, cp, base, cresult,
1624 sizeof(cresult)) == NULL)
1625 return NULL;
1626 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1627 return NULL; /*result overrun*/
1628 break;
1629 } else if ((i & 0x3f) == i) {
1630 if (i > ep - cp)
1631 return NULL; /*source overrun*/
1632 while (i-- > 0 && cp < ep) {
1633 l = snprintf(cresult, sizeof(cresult),
1634 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1635 if (l >= sizeof(cresult) || l < 0)
1636 return NULL;
1637 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1638 return NULL; /*result overrun*/
1639 cp++;
1640 }
1641 } else
1642 return NULL; /*invalid label*/
1643 }
1644 if (i != 0)
1645 return NULL; /*not terminated*/
1646 cp++;
1647 *sp = cp;
1648 return buf;
1649 }
1650
1651 /*
1652 * pr_pack --
1653 * Print out the packet, if it came from us. This logic is necessary
1654 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1655 * which arrive ('tis only fair). This permits multiple copies of this
1656 * program to be run without having intermingled output (or statistics!).
1657 */
1658 void
1659 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1660 {
1661 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1662 struct icmp6_hdr *icp;
1663 struct icmp6_nodeinfo *ni;
1664 int i;
1665 int hoplim;
1666 struct sockaddr *from;
1667 int fromlen;
1668 u_char *cp = NULL, *dp, *end = buf + cc;
1669 struct in6_pktinfo *pktinfo = NULL;
1670 struct timeval tv, tp;
1671 struct tv32 *tpp;
1672 double triptime = 0;
1673 int dupflag;
1674 size_t off;
1675 int oldfqdn;
1676 u_int16_t seq;
1677 char dnsname[NS_MAXDNAME + 1];
1678 int tclass = 0;
1679 int sotc = -1;
1680
1681 (void)gettimeofday(&tv, NULL);
1682
1683 if (!mhdr || !mhdr->msg_name ||
1684 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1685 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1686 if (options & F_VERBOSE)
1687 warnx("invalid peername");
1688 return;
1689 }
1690 from = (struct sockaddr *)mhdr->msg_name;
1691 fromlen = mhdr->msg_namelen;
1692 if (cc < sizeof(struct icmp6_hdr)) {
1693 if (options & F_VERBOSE)
1694 warnx("packet too short (%d bytes) from %s", cc,
1695 pr_addr(from, fromlen));
1696 return;
1697 }
1698 if (((mhdr->msg_flags & MSG_CTRUNC) != 0) &&
1699 (options & F_VERBOSE) != 0)
1700 warnx("some control data discarded, insufficient buffer size");
1701 icp = (struct icmp6_hdr *)buf;
1702 ni = (struct icmp6_nodeinfo *)buf;
1703 off = 0;
1704
1705 if ((hoplim = get_hoplim(mhdr)) == -1) {
1706 warnx("failed to get receiving hop limit");
1707 return;
1708 }
1709 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1710 warnx("failed to get receiving packet information");
1711 return;
1712 }
1713 if (rcvtclass && (tclass = get_tclass(mhdr)) == -1) {
1714 warnx("failed to get receiving traffic class");
1715 return;
1716 }
1717
1718 if (how_so_traffic_class > 0)
1719 sotc = get_so_traffic_class(mhdr);
1720
1721 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1722 seq = ntohs(icp->icmp6_seq);
1723 ++nreceived;
1724 if (timing) {
1725 tpp = (struct tv32 *)(icp + 1);
1726 tp.tv_sec = ntohl(tpp->tv32_sec);
1727 tp.tv_usec = ntohl(tpp->tv32_usec);
1728 tvsub(&tv, &tp);
1729 triptime = ((double)tv.tv_sec) * 1000.0 +
1730 ((double)tv.tv_usec) / 1000.0;
1731 tsum += triptime;
1732 tsumsq += triptime * triptime;
1733 if (triptime < tmin)
1734 tmin = triptime;
1735 if (triptime > tmax)
1736 tmax = triptime;
1737 }
1738
1739 if (TST(seq % mx_dup_ck)) {
1740 ++nrepeats;
1741 --nreceived;
1742 dupflag = 1;
1743 } else {
1744 SET(seq % mx_dup_ck);
1745 dupflag = 0;
1746 }
1747
1748 if (options & F_QUIET)
1749 return;
1750
1751 if (options & F_FLOOD)
1752 (void)write(STDOUT_FILENO, &BSPACE, 1);
1753 else {
1754 if (options & F_AUDIBLE)
1755 (void)write(STDOUT_FILENO, &BBELL, 1);
1756 (void)printf("%d bytes from %s, icmp_seq=%u", cc,
1757 pr_addr(from, fromlen), seq);
1758 (void)printf(" hlim=%d", hoplim);
1759 if ((options & F_VERBOSE) != 0) {
1760 struct sockaddr_in6 dstsa;
1761
1762 memset(&dstsa, 0, sizeof(dstsa));
1763 dstsa.sin6_family = AF_INET6;
1764 dstsa.sin6_len = sizeof(dstsa);
1765 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1766 dstsa.sin6_addr = pktinfo->ipi6_addr;
1767 (void)printf(" dst=%s",
1768 pr_addr((struct sockaddr *)&dstsa,
1769 sizeof(dstsa)));
1770 }
1771 if (timing)
1772 (void)printf(" time=%.3f ms", triptime);
1773 if (dupflag) {
1774 if (!IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
1775 (void)printf("(DUP!)");
1776 }
1777 if (rcvtclass)
1778 (void)printf(" tclass=%d", tclass);
1779 if (sotc != -1)
1780 (void)printf(" sotc=%d", sotc);
1781 /* check the data */
1782 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1783 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1784 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1785 if (*cp != *dp) {
1786 (void)printf("\nwrong data byte #%d "
1787 "should be 0x%x but was 0x%x",
1788 i, *dp, *cp);
1789 break;
1790 }
1791 }
1792 }
1793 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1794 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce);
1795 ++nreceived;
1796 if (TST(seq % mx_dup_ck)) {
1797 ++nrepeats;
1798 --nreceived;
1799 dupflag = 1;
1800 } else {
1801 SET(seq % mx_dup_ck);
1802 dupflag = 0;
1803 }
1804
1805 if (options & F_QUIET)
1806 return;
1807
1808 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1809
1810 switch (ntohs(ni->ni_code)) {
1811 case ICMP6_NI_SUCCESS:
1812 break;
1813 case ICMP6_NI_REFUSED:
1814 printf("refused, type 0x%x", ntohs(ni->ni_type));
1815 goto fqdnend;
1816 case ICMP6_NI_UNKNOWN:
1817 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1818 goto fqdnend;
1819 default:
1820 printf("unknown code 0x%x, type 0x%x",
1821 ntohs(ni->ni_code), ntohs(ni->ni_type));
1822 goto fqdnend;
1823 }
1824
1825 switch (ntohs(ni->ni_qtype)) {
1826 case NI_QTYPE_NOOP:
1827 printf("NodeInfo NOOP");
1828 break;
1829 case NI_QTYPE_SUPTYPES:
1830 pr_suptypes(ni, end - (u_char *)ni);
1831 break;
1832 case NI_QTYPE_NODEADDR:
1833 pr_nodeaddr(ni, end - (u_char *)ni);
1834 break;
1835 case NI_QTYPE_FQDN:
1836 default: /* XXX: for backward compatibility */
1837 cp = (u_char *)ni + ICMP6_NIRLEN;
1838 if (buf[off + ICMP6_NIRLEN] ==
1839 cc - off - ICMP6_NIRLEN - 1)
1840 oldfqdn = 1;
1841 else
1842 oldfqdn = 0;
1843 if (oldfqdn) {
1844 cp++; /* skip length */
1845 while (cp < end) {
1846 safeputc(*cp & 0xff);
1847 cp++;
1848 }
1849 } else {
1850 i = 0;
1851 while (cp < end) {
1852 if (dnsdecode((const u_char **)&cp, end,
1853 (const u_char *)(ni + 1), dnsname,
1854 sizeof(dnsname)) == NULL) {
1855 printf("???");
1856 break;
1857 }
1858 /*
1859 * name-lookup special handling for
1860 * truncated name
1861 */
1862 if (cp + 1 <= end && !*cp &&
1863 strlen(dnsname) > 0) {
1864 dnsname[strlen(dnsname) - 1] = '\0';
1865 cp++;
1866 }
1867 printf("%s%s", i > 0 ? "," : "",
1868 dnsname);
1869 }
1870 }
1871 if (options & F_VERBOSE) {
1872 int32_t ttl;
1873 int comma = 0;
1874
1875 (void)printf(" ("); /*)*/
1876
1877 switch (ni->ni_code) {
1878 case ICMP6_NI_REFUSED:
1879 (void)printf("refused");
1880 comma++;
1881 break;
1882 case ICMP6_NI_UNKNOWN:
1883 (void)printf("unknown qtype");
1884 comma++;
1885 break;
1886 }
1887
1888 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1889 /* case of refusion, unknown */
1890 /*(*/
1891 putchar(')');
1892 goto fqdnend;
1893 }
1894 ttl = (int32_t)ntohl(*(u_int32_t *)
1895 &buf[off+ICMP6ECHOLEN+8]);
1896 if (comma)
1897 printf(",");
1898 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1899 (void)printf("TTL=%d:meaningless",
1900 (int)ttl);
1901 } else {
1902 if (ttl < 0) {
1903 (void)printf("TTL=%d:invalid",
1904 ttl);
1905 } else
1906 (void)printf("TTL=%d", ttl);
1907 }
1908 comma++;
1909
1910 if (oldfqdn) {
1911 if (comma)
1912 printf(",");
1913 printf("03 draft");
1914 comma++;
1915 } else {
1916 cp = (u_char *)ni + ICMP6_NIRLEN;
1917 if (cp == end) {
1918 if (comma)
1919 printf(",");
1920 printf("no name");
1921 comma++;
1922 }
1923 }
1924
1925 if (buf[off + ICMP6_NIRLEN] !=
1926 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1927 if (comma)
1928 printf(",");
1929 (void)printf("invalid namelen:%d/%lu",
1930 buf[off + ICMP6_NIRLEN],
1931 (u_long)cc - off - ICMP6_NIRLEN - 1);
1932 comma++;
1933 }
1934 /*(*/
1935 putchar(')');
1936 }
1937 fqdnend:
1938 ;
1939 }
1940 } else {
1941 /* We've got something other than an ECHOREPLY */
1942 if (!(options & F_VERBOSE))
1943 return;
1944 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1945 pr_icmph(icp, end);
1946 }
1947
1948 if (!(options & F_FLOOD)) {
1949 (void)putchar('\n');
1950 if (options & F_VERBOSE)
1951 pr_exthdrs(mhdr);
1952 (void)fflush(stdout);
1953 }
1954 #undef safeputc
1955 }
1956
1957 void
1958 pr_exthdrs(struct msghdr *mhdr)
1959 {
1960 ssize_t bufsize;
1961 void *bufp;
1962 struct cmsghdr *cm;
1963
1964 bufsize = 0;
1965 bufp = mhdr->msg_control;
1966 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1967 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1968 if (cm->cmsg_level != IPPROTO_IPV6)
1969 continue;
1970
1971 bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp);
1972 if (bufsize <= 0)
1973 continue;
1974 switch (cm->cmsg_type) {
1975 case IPV6_HOPOPTS:
1976 printf(" HbH Options: ");
1977 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1978 break;
1979 case IPV6_DSTOPTS:
1980 #ifdef IPV6_RTHDRDSTOPTS
1981 case IPV6_RTHDRDSTOPTS:
1982 #endif
1983 printf(" Dst Options: ");
1984 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
1985 break;
1986 case IPV6_RTHDR:
1987 printf(" Routing: ");
1988 pr_rthdr(CMSG_DATA(cm), (size_t)bufsize);
1989 break;
1990 }
1991 }
1992 }
1993
1994 #ifdef USE_RFC2292BIS
1995 void
1996 pr_ip6opt(void *extbuf, size_t bufsize)
1997 {
1998 struct ip6_hbh *ext;
1999 int currentlen;
2000 u_int8_t type;
2001 socklen_t extlen, len, origextlen;
2002 void *databuf;
2003 size_t offset;
2004 u_int16_t value2;
2005 u_int32_t value4;
2006
2007 ext = (struct ip6_hbh *)extbuf;
2008 extlen = (ext->ip6h_len + 1) * 8;
2009 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
2010 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
2011
2012 /*
2013 * Bounds checking on the ancillary data buffer:
2014 * subtract the size of a cmsg structure from the buffer size.
2015 */
2016 if (bufsize < (extlen + CMSG_SPACE(0))) {
2017 origextlen = extlen;
2018 extlen = bufsize - CMSG_SPACE(0);
2019 warnx("options truncated, showing only %u (total=%u)",
2020 (unsigned int)(extlen / 8 - 1),
2021 (unsigned int)(ext->ip6h_len));
2022 }
2023
2024 currentlen = 0;
2025 while (1) {
2026 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
2027 &type, &len, &databuf);
2028 if (currentlen == -1)
2029 break;
2030 switch (type) {
2031 /*
2032 * Note that inet6_opt_next automatically skips any padding
2033 * optins.
2034 */
2035 case IP6OPT_JUMBO:
2036 offset = 0;
2037 offset = inet6_opt_get_val(databuf, offset,
2038 &value4, sizeof(value4));
2039 printf(" Jumbo Payload Opt: Length %u\n",
2040 (u_int32_t)ntohl(value4));
2041 break;
2042 case IP6OPT_ROUTER_ALERT:
2043 offset = 0;
2044 offset = inet6_opt_get_val(databuf, offset,
2045 &value2, sizeof(value2));
2046 printf(" Router Alert Opt: Type %u\n",
2047 ntohs(value2));
2048 break;
2049 default:
2050 printf(" Received Opt %u len %lu\n",
2051 type, (unsigned long)len);
2052 break;
2053 }
2054 }
2055 return;
2056 }
2057 #else /* !USE_RFC2292BIS */
2058 /* ARGSUSED */
2059 void
2060 pr_ip6opt(void *extbuf, size_t bufsize __unused)
2061 {
2062 putchar('\n');
2063 return;
2064 }
2065 #endif /* USE_RFC2292BIS */
2066
2067 #ifdef USE_RFC2292BIS
2068 void
2069 pr_rthdr(void *extbuf, size_t bufsize)
2070 {
2071 struct in6_addr *in6;
2072 char ntopbuf[INET6_ADDRSTRLEN];
2073 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
2074 int i, segments, origsegs, rthsize, size0, size1;
2075
2076 /* print fixed part of the header */
2077 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
2078 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
2079 if ((segments = inet6_rth_segments(extbuf)) >= 0) {
2080 printf("%d segments, ", segments);
2081 printf("%d left\n", rh->ip6r_segleft);
2082 } else {
2083 printf("segments unknown, ");
2084 printf("%d left\n", rh->ip6r_segleft);
2085 return;
2086 }
2087
2088 /*
2089 * Bounds checking on the ancillary data buffer. When calculating
2090 * the number of items to show keep in mind:
2091 * - The size of the cmsg structure
2092 * - The size of one segment (the size of a Type 0 routing header)
2093 * - When dividing add a fudge factor of one in case the
2094 * dividend is not evenly divisible by the divisor
2095 */
2096 rthsize = (rh->ip6r_len + 1) * 8;
2097 if (bufsize < (rthsize + CMSG_SPACE(0))) {
2098 origsegs = segments;
2099 size0 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 0);
2100 size1 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 1);
2101 segments -= (rthsize - (bufsize - CMSG_SPACE(0))) /
2102 (size1 - size0) + 1;
2103 warnx("segments truncated, showing only %d (total=%d)",
2104 segments, origsegs);
2105 }
2106
2107 for (i = 0; i < segments; i++) {
2108 in6 = inet6_rth_getaddr(extbuf, i);
2109 if (in6 == NULL)
2110 printf(" [%d]<NULL>\n", i);
2111 else {
2112 if (!inet_ntop(AF_INET6, in6, ntopbuf,
2113 sizeof(ntopbuf)))
2114 strlcpy(ntopbuf, "?", sizeof(ntopbuf));
2115 printf(" [%d]%s\n", i, ntopbuf);
2116 }
2117 }
2118
2119 return;
2120
2121 }
2122
2123 #else /* !USE_RFC2292BIS */
2124 /* ARGSUSED */
2125 void
2126 pr_rthdr(void *extbuf, size_t bufsize __unused)
2127 {
2128 putchar('\n');
2129 return;
2130 }
2131 #endif /* USE_RFC2292BIS */
2132
2133 int
2134 pr_bitrange(u_int32_t v, int soff, int ii)
2135 {
2136 int off;
2137 int i;
2138
2139 off = 0;
2140 while (off < 32) {
2141 /* shift till we have 0x01 */
2142 if ((v & 0x01) == 0) {
2143 if (ii > 1)
2144 printf("-%u", soff + off - 1);
2145 ii = 0;
2146 switch (v & 0x0f) {
2147 case 0x00:
2148 v >>= 4;
2149 off += 4;
2150 continue;
2151 case 0x08:
2152 v >>= 3;
2153 off += 3;
2154 continue;
2155 case 0x04: case 0x0c:
2156 v >>= 2;
2157 off += 2;
2158 continue;
2159 default:
2160 v >>= 1;
2161 off += 1;
2162 continue;
2163 }
2164 }
2165
2166 /* we have 0x01 with us */
2167 for (i = 0; i < 32 - off; i++) {
2168 if ((v & (0x01 << i)) == 0)
2169 break;
2170 }
2171 if (!ii)
2172 printf(" %u", soff + off);
2173 ii += i;
2174 v >>= i; off += i;
2175 }
2176 return ii;
2177 }
2178
2179 void
2180 pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
2181 /* ni->qtype must be SUPTYPES */
2182 {
2183 size_t clen;
2184 u_int32_t v;
2185 const u_char *cp, *end;
2186 u_int16_t cur;
2187 struct cbit {
2188 u_int16_t words; /*32bit count*/
2189 u_int16_t skip;
2190 } cbit;
2191 #define MAXQTYPES (1 << 16)
2192 size_t off;
2193 int b;
2194
2195 cp = (u_char *)(ni + 1);
2196 end = ((u_char *)ni) + nilen;
2197 cur = 0;
2198 b = 0;
2199
2200 printf("NodeInfo Supported Qtypes");
2201 if (options & F_VERBOSE) {
2202 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
2203 printf(", compressed bitmap");
2204 else
2205 printf(", raw bitmap");
2206 }
2207
2208 while (cp < end) {
2209 clen = (size_t)(end - cp);
2210 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
2211 if (clen == 0 || clen > MAXQTYPES / 8 ||
2212 clen % sizeof(v)) {
2213 printf("???");
2214 return;
2215 }
2216 } else {
2217 if (clen < sizeof(cbit) || clen % sizeof(v))
2218 return;
2219 memcpy(&cbit, cp, sizeof(cbit));
2220 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
2221 clen)
2222 return;
2223 cp += sizeof(cbit);
2224 clen = ntohs(cbit.words) * sizeof(v);
2225 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
2226 MAXQTYPES)
2227 return;
2228 }
2229
2230 for (off = 0; off < clen; off += sizeof(v)) {
2231 memcpy(&v, cp + off, sizeof(v));
2232 v = (u_int32_t)ntohl(v);
2233 b = pr_bitrange(v, (int)(cur + off * 8), b);
2234 }
2235 /* flush the remaining bits */
2236 b = pr_bitrange(0, (int)(cur + off * 8), b);
2237
2238 cp += clen;
2239 cur += clen * 8;
2240 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
2241 cur += ntohs(cbit.skip) * 32;
2242 }
2243 }
2244
2245 void
2246 pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
2247 /* ni->qtype must be NODEADDR */
2248 {
2249 u_char *cp = (u_char *)(ni + 1);
2250 char ntop_buf[INET6_ADDRSTRLEN];
2251 int withttl = 0;
2252
2253 nilen -= sizeof(struct icmp6_nodeinfo);
2254
2255 if (options & F_VERBOSE) {
2256 switch (ni->ni_code) {
2257 case ICMP6_NI_REFUSED:
2258 (void)printf("refused");
2259 break;
2260 case ICMP6_NI_UNKNOWN:
2261 (void)printf("unknown qtype");
2262 break;
2263 }
2264 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
2265 (void)printf(" truncated");
2266 }
2267 putchar('\n');
2268 if (nilen <= 0)
2269 printf(" no address\n");
2270
2271 /*
2272 * In icmp-name-lookups 05 and later, TTL of each returned address
2273 * is contained in the resposne. We try to detect the version
2274 * by the length of the data, but note that the detection algorithm
2275 * is incomplete. We assume the latest draft by default.
2276 */
2277 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
2278 withttl = 1;
2279 while (nilen > 0) {
2280 u_int32_t ttl = 0;
2281
2282 if (withttl) {
2283 /* XXX: alignment? */
2284 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp);
2285 cp += sizeof(u_int32_t);
2286 nilen -= sizeof(u_int32_t);
2287 }
2288
2289 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
2290 NULL)
2291 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2292 printf(" %s", ntop_buf);
2293 if (withttl) {
2294 if (ttl == 0xffffffff) {
2295 /*
2296 * XXX: can this convention be applied to all
2297 * type of TTL (i.e. non-ND TTL)?
2298 */
2299 printf("(TTL=infty)");
2300 }
2301 else
2302 printf("(TTL=%u)", ttl);
2303 }
2304 putchar('\n');
2305
2306 nilen -= sizeof(struct in6_addr);
2307 cp += sizeof(struct in6_addr);
2308 }
2309 }
2310
2311 int
2312 get_hoplim(struct msghdr *mhdr)
2313 {
2314 struct cmsghdr *cm;
2315
2316 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2317 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2318 if (cm->cmsg_len == 0)
2319 return(-1);
2320
2321 if (cm->cmsg_level == IPPROTO_IPV6 &&
2322 cm->cmsg_type == IPV6_HOPLIMIT &&
2323 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2324 return(*(int *)CMSG_DATA(cm));
2325 }
2326
2327 return(-1);
2328 }
2329
2330 struct in6_pktinfo *
2331 get_rcvpktinfo(struct msghdr *mhdr)
2332 {
2333 struct cmsghdr *cm;
2334
2335 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2336 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2337 if (cm->cmsg_len == 0)
2338 return(NULL);
2339
2340 if (cm->cmsg_level == IPPROTO_IPV6 &&
2341 cm->cmsg_type == IPV6_PKTINFO &&
2342 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
2343 return((struct in6_pktinfo *)CMSG_DATA(cm));
2344 }
2345
2346 return(NULL);
2347 }
2348
2349 int
2350 get_pathmtu(struct msghdr *mhdr)
2351 {
2352 #ifdef IPV6_RECVPATHMTU
2353 struct cmsghdr *cm;
2354 struct ip6_mtuinfo *mtuctl = NULL;
2355
2356 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2357 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2358 if (cm->cmsg_len == 0)
2359 return(0);
2360
2361 if (cm->cmsg_level == IPPROTO_IPV6 &&
2362 cm->cmsg_type == IPV6_PATHMTU &&
2363 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2364 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm);
2365
2366 /*
2367 * If the notified destination is different from
2368 * the one we are pinging, just ignore the info.
2369 * We check the scope ID only when both notified value
2370 * and our own value have non-0 values, because we may
2371 * have used the default scope zone ID for sending,
2372 * in which case the scope ID value is 0.
2373 */
2374 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr,
2375 &dst.sin6_addr) ||
2376 (mtuctl->ip6m_addr.sin6_scope_id &&
2377 dst.sin6_scope_id &&
2378 mtuctl->ip6m_addr.sin6_scope_id !=
2379 dst.sin6_scope_id)) {
2380 if ((options & F_VERBOSE) != 0) {
2381 printf("path MTU for %s is notified. "
2382 "(ignored)\n",
2383 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr,
2384 sizeof(mtuctl->ip6m_addr)));
2385 }
2386 return(0);
2387 }
2388
2389 /*
2390 * Ignore an invalid MTU. XXX: can we just believe
2391 * the kernel check?
2392 */
2393 if (mtuctl->ip6m_mtu < IPV6_MMTU)
2394 return(0);
2395
2396 /* notification for our destination. return the MTU. */
2397 return((int)mtuctl->ip6m_mtu);
2398 }
2399 }
2400 #endif
2401 return(0);
2402 }
2403
2404 int
2405 get_tclass(mhdr)
2406 struct msghdr *mhdr;
2407 {
2408 struct cmsghdr *cm;
2409
2410 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2411 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2412 if (cm->cmsg_len == 0)
2413 return(-1);
2414
2415 if (cm->cmsg_level == IPPROTO_IPV6 &&
2416 cm->cmsg_type == IPV6_TCLASS &&
2417 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2418 return(*(int *)CMSG_DATA(cm));
2419 }
2420
2421 return(-1);
2422 }
2423
2424 int
2425 get_so_traffic_class(struct msghdr *mhdr)
2426 {
2427 struct cmsghdr *cm;
2428
2429 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2430 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2431 if (cm->cmsg_len == 0)
2432 return(-1);
2433
2434 if (cm->cmsg_level == SOL_SOCKET &&
2435 cm->cmsg_type == SO_TRAFFIC_CLASS &&
2436 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2437 return(*(int *)CMSG_DATA(cm));
2438 }
2439
2440 return(-1);
2441 }
2442
2443 /*
2444 * tvsub --
2445 * Subtract 2 timeval structs: out = out - in. Out is assumed to
2446 * be >= in.
2447 */
2448 void
2449 tvsub(struct timeval *out, struct timeval *in)
2450 {
2451 if ((out->tv_usec -= in->tv_usec) < 0) {
2452 --out->tv_sec;
2453 out->tv_usec += 1000000;
2454 }
2455 out->tv_sec -= in->tv_sec;
2456 }
2457
2458 /*
2459 * onint --
2460 * SIGINT handler.
2461 */
2462 /* ARGSUSED */
2463 void
2464 onint(int notused __unused)
2465 {
2466 summary();
2467
2468 if (res != NULL)
2469 freeaddrinfo(res);
2470
2471 if (packet != NULL)
2472 free(packet);
2473
2474 if (cm != NULL)
2475 free(cm);
2476
2477 if (scmsg != NULL)
2478 free(scmsg);
2479
2480 #ifndef HAVE_POLL_H
2481 if (fdmaskp != NULL)
2482 free(fdmaskp);
2483 #endif
2484
2485 (void)signal(SIGINT, SIG_DFL);
2486 (void)kill(getpid(), SIGINT);
2487
2488 /* NOTREACHED */
2489 exit(1);
2490 }
2491
2492 /*
2493 * summary --
2494 * Print out statistics.
2495 */
2496 void
2497 summary(void)
2498 {
2499 (void)printf("\n--- %s ping6 statistics ---\n", hostname);
2500 (void)printf("%ld packets transmitted, ", ntransmitted);
2501 (void)printf("%ld packets received, ", nreceived);
2502 if (nrepeats)
2503 (void)printf("+%ld duplicates, ", nrepeats);
2504 if (ntransmitted) {
2505 if (nreceived > ntransmitted)
2506 (void)printf("-- somebody's duplicating packets!");
2507 else
2508 (void)printf("%.1f%% packet loss",
2509 ((((double)ntransmitted - nreceived) * 100.0) /
2510 ntransmitted));
2511 }
2512 (void)putchar('\n');
2513 if (nreceived && timing) {
2514 /* Only display average to microseconds */
2515 double num = nreceived + nrepeats;
2516 double avg = tsum / num;
2517 double dev = sqrt(tsumsq / num - avg * avg);
2518 (void)printf(
2519 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2520 tmin, avg, tmax, dev);
2521 (void)fflush(stdout);
2522 }
2523 (void)fflush(stdout);
2524 }
2525
2526 /*subject type*/
2527 static const char *niqcode[] = {
2528 "IPv6 address",
2529 "DNS label", /*or empty*/
2530 "IPv4 address",
2531 };
2532
2533 /*result code*/
2534 static const char *nircode[] = {
2535 "Success", "Refused", "Unknown",
2536 };
2537
2538
2539 /*
2540 * pr_icmph --
2541 * Print a descriptive string about an ICMP header.
2542 */
2543 void
2544 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2545 {
2546 char ntop_buf[INET6_ADDRSTRLEN];
2547 struct nd_redirect *red;
2548 struct icmp6_nodeinfo *ni;
2549 char dnsname[NS_MAXDNAME + 1];
2550 const u_char *cp;
2551 size_t l;
2552
2553 switch (icp->icmp6_type) {
2554 case ICMP6_DST_UNREACH:
2555 switch (icp->icmp6_code) {
2556 case ICMP6_DST_UNREACH_NOROUTE:
2557 (void)printf("No Route to Destination\n");
2558 break;
2559 case ICMP6_DST_UNREACH_ADMIN:
2560 (void)printf("Destination Administratively "
2561 "Unreachable\n");
2562 break;
2563 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2564 (void)printf("Destination Unreachable Beyond Scope\n");
2565 break;
2566 case ICMP6_DST_UNREACH_ADDR:
2567 (void)printf("Destination Host Unreachable\n");
2568 break;
2569 case ICMP6_DST_UNREACH_NOPORT:
2570 (void)printf("Destination Port Unreachable\n");
2571 break;
2572 default:
2573 (void)printf("Destination Unreachable, Bad Code: %d\n",
2574 icp->icmp6_code);
2575 break;
2576 }
2577 /* Print returned IP header information */
2578 pr_retip((struct ip6_hdr *)(icp + 1), end);
2579 break;
2580 case ICMP6_PACKET_TOO_BIG:
2581 (void)printf("Packet too big mtu = %d\n",
2582 (int)ntohl(icp->icmp6_mtu));
2583 pr_retip((struct ip6_hdr *)(icp + 1), end);
2584 break;
2585 case ICMP6_TIME_EXCEEDED:
2586 switch (icp->icmp6_code) {
2587 case ICMP6_TIME_EXCEED_TRANSIT:
2588 (void)printf("Time to live exceeded\n");
2589 break;
2590 case ICMP6_TIME_EXCEED_REASSEMBLY:
2591 (void)printf("Frag reassembly time exceeded\n");
2592 break;
2593 default:
2594 (void)printf("Time exceeded, Bad Code: %d\n",
2595 icp->icmp6_code);
2596 break;
2597 }
2598 pr_retip((struct ip6_hdr *)(icp + 1), end);
2599 break;
2600 case ICMP6_PARAM_PROB:
2601 (void)printf("Parameter problem: ");
2602 switch (icp->icmp6_code) {
2603 case ICMP6_PARAMPROB_HEADER:
2604 (void)printf("Erroneous Header ");
2605 break;
2606 case ICMP6_PARAMPROB_NEXTHEADER:
2607 (void)printf("Unknown Nextheader ");
2608 break;
2609 case ICMP6_PARAMPROB_OPTION:
2610 (void)printf("Unrecognized Option ");
2611 break;
2612 default:
2613 (void)printf("Bad code(%d) ", icp->icmp6_code);
2614 break;
2615 }
2616 (void)printf("pointer = 0x%02x\n",
2617 (u_int32_t)ntohl(icp->icmp6_pptr));
2618 pr_retip((struct ip6_hdr *)(icp + 1), end);
2619 break;
2620 case ICMP6_ECHO_REQUEST:
2621 (void)printf("Echo Request");
2622 /* XXX ID + Seq + Data */
2623 break;
2624 case ICMP6_ECHO_REPLY:
2625 (void)printf("Echo Reply");
2626 /* XXX ID + Seq + Data */
2627 break;
2628 case ICMP6_MEMBERSHIP_QUERY:
2629 (void)printf("Listener Query");
2630 break;
2631 case ICMP6_MEMBERSHIP_REPORT:
2632 (void)printf("Listener Report");
2633 break;
2634 case ICMP6_MEMBERSHIP_REDUCTION:
2635 (void)printf("Listener Done");
2636 break;
2637 case ND_ROUTER_SOLICIT:
2638 (void)printf("Router Solicitation");
2639 break;
2640 case ND_ROUTER_ADVERT:
2641 (void)printf("Router Advertisement");
2642 break;
2643 case ND_NEIGHBOR_SOLICIT:
2644 (void)printf("Neighbor Solicitation");
2645 break;
2646 case ND_NEIGHBOR_ADVERT:
2647 (void)printf("Neighbor Advertisement");
2648 break;
2649 case ND_REDIRECT:
2650 red = (struct nd_redirect *)icp;
2651 (void)printf("Redirect\n");
2652 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2653 sizeof(ntop_buf)))
2654 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2655 (void)printf("Destination: %s", ntop_buf);
2656 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2657 sizeof(ntop_buf)))
2658 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2659 (void)printf(" New Target: %s", ntop_buf);
2660 break;
2661 case ICMP6_NI_QUERY:
2662 (void)printf("Node Information Query");
2663 /* XXX ID + Seq + Data */
2664 ni = (struct icmp6_nodeinfo *)icp;
2665 l = end - (u_char *)(ni + 1);
2666 printf(", ");
2667 switch (ntohs(ni->ni_qtype)) {
2668 case NI_QTYPE_NOOP:
2669 (void)printf("NOOP");
2670 break;
2671 case NI_QTYPE_SUPTYPES:
2672 (void)printf("Supported qtypes");
2673 break;
2674 case NI_QTYPE_FQDN:
2675 (void)printf("DNS name");
2676 break;
2677 case NI_QTYPE_NODEADDR:
2678 (void)printf("nodeaddr");
2679 break;
2680 case NI_QTYPE_IPV4ADDR:
2681 (void)printf("IPv4 nodeaddr");
2682 break;
2683 default:
2684 (void)printf("unknown qtype");
2685 break;
2686 }
2687 if (options & F_VERBOSE) {
2688 switch (ni->ni_code) {
2689 case ICMP6_NI_SUBJ_IPV6:
2690 if (l == sizeof(struct in6_addr) &&
2691 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2692 sizeof(ntop_buf)) != NULL) {
2693 (void)printf(", subject=%s(%s)",
2694 niqcode[ni->ni_code], ntop_buf);
2695 } else {
2696 #if 1
2697 /* backward compat to -W */
2698 (void)printf(", oldfqdn");
2699 #else
2700 (void)printf(", invalid");
2701 #endif
2702 }
2703 break;
2704 case ICMP6_NI_SUBJ_FQDN:
2705 if (end == (u_char *)(ni + 1)) {
2706 (void)printf(", no subject");
2707 break;
2708 }
2709 printf(", subject=%s", niqcode[ni->ni_code]);
2710 cp = (const u_char *)(ni + 1);
2711 if (dnsdecode(&cp, end, NULL, dnsname,
2712 sizeof(dnsname)) != NULL)
2713 printf("(%s)", dnsname);
2714 else
2715 printf("(invalid)");
2716 break;
2717 case ICMP6_NI_SUBJ_IPV4:
2718 if (l == sizeof(struct in_addr) &&
2719 inet_ntop(AF_INET, ni + 1, ntop_buf,
2720 sizeof(ntop_buf)) != NULL) {
2721 (void)printf(", subject=%s(%s)",
2722 niqcode[ni->ni_code], ntop_buf);
2723 } else
2724 (void)printf(", invalid");
2725 break;
2726 default:
2727 (void)printf(", invalid");
2728 break;
2729 }
2730 }
2731 break;
2732 case ICMP6_NI_REPLY:
2733 (void)printf("Node Information Reply");
2734 /* XXX ID + Seq + Data */
2735 ni = (struct icmp6_nodeinfo *)icp;
2736 printf(", ");
2737 switch (ntohs(ni->ni_qtype)) {
2738 case NI_QTYPE_NOOP:
2739 (void)printf("NOOP");
2740 break;
2741 case NI_QTYPE_SUPTYPES:
2742 (void)printf("Supported qtypes");
2743 break;
2744 case NI_QTYPE_FQDN:
2745 (void)printf("DNS name");
2746 break;
2747 case NI_QTYPE_NODEADDR:
2748 (void)printf("nodeaddr");
2749 break;
2750 case NI_QTYPE_IPV4ADDR:
2751 (void)printf("IPv4 nodeaddr");
2752 break;
2753 default:
2754 (void)printf("unknown qtype");
2755 break;
2756 }
2757 if (options & F_VERBOSE) {
2758 if (ni->ni_code > sizeof(nircode) / sizeof(nircode[0]))
2759 printf(", invalid");
2760 else
2761 printf(", %s", nircode[ni->ni_code]);
2762 }
2763 break;
2764 default:
2765 (void)printf("Bad ICMP type: %d", icp->icmp6_type);
2766 }
2767 }
2768
2769 /*
2770 * pr_iph --
2771 * Print an IP6 header.
2772 */
2773 void
2774 pr_iph(struct ip6_hdr *ip6)
2775 {
2776 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2777 u_int8_t tc;
2778 char ntop_buf[INET6_ADDRSTRLEN];
2779
2780 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2781 tc = (tc >> 4) & 0x0f;
2782 tc |= (ip6->ip6_vfc << 4);
2783
2784 printf("Vr TC Flow Plen Nxt Hlim\n");
2785 printf(" %1x %02x %05x %04x %02x %02x\n",
2786 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2787 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2788 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2789 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2790 printf("%s->", ntop_buf);
2791 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2792 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2793 printf("%s\n", ntop_buf);
2794 }
2795
2796 /*
2797 * pr_addr --
2798 * Return an ascii host address as a dotted quad and optionally with
2799 * a hostname.
2800 */
2801 const char *
2802 pr_addr(struct sockaddr *addr, int addrlen)
2803 {
2804 static char buf[NI_MAXHOST];
2805 int flag = 0;
2806
2807 if ((options & F_HOSTNAME) == 0)
2808 flag |= NI_NUMERICHOST;
2809
2810 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0)
2811 return (buf);
2812 else
2813 return "?";
2814 }
2815
2816 /*
2817 * pr_retip --
2818 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2819 */
2820 void
2821 pr_retip(struct ip6_hdr *ip6, u_char *end)
2822 {
2823 u_char *cp = (u_char *)ip6, nh;
2824 int hlen;
2825
2826 if (end - (u_char *)ip6 < sizeof(*ip6)) {
2827 printf("IP6");
2828 goto trunc;
2829 }
2830 pr_iph(ip6);
2831 hlen = sizeof(*ip6);
2832
2833 nh = ip6->ip6_nxt;
2834 cp += hlen;
2835 while (end - cp >= 8) {
2836 switch (nh) {
2837 case IPPROTO_HOPOPTS:
2838 printf("HBH ");
2839 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2840 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2841 break;
2842 case IPPROTO_DSTOPTS:
2843 printf("DSTOPT ");
2844 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2845 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2846 break;
2847 case IPPROTO_FRAGMENT:
2848 printf("FRAG ");
2849 hlen = sizeof(struct ip6_frag);
2850 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2851 break;
2852 case IPPROTO_ROUTING:
2853 printf("RTHDR ");
2854 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2855 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2856 break;
2857 #ifdef IPSEC
2858 case IPPROTO_AH:
2859 printf("AH ");
2860 hlen = (((struct ah *)cp)->ah_len+2) << 2;
2861 nh = ((struct ah *)cp)->ah_nxt;
2862 break;
2863 #endif
2864 case IPPROTO_ICMPV6:
2865 printf("ICMP6: type = %d, code = %d\n",
2866 *cp, *(cp + 1));
2867 return;
2868 case IPPROTO_ESP:
2869 printf("ESP\n");
2870 return;
2871 case IPPROTO_TCP:
2872 printf("TCP: from port %u, to port %u (decimal)\n",
2873 (*cp * 256 + *(cp + 1)),
2874 (*(cp + 2) * 256 + *(cp + 3)));
2875 return;
2876 case IPPROTO_UDP:
2877 printf("UDP: from port %u, to port %u (decimal)\n",
2878 (*cp * 256 + *(cp + 1)),
2879 (*(cp + 2) * 256 + *(cp + 3)));
2880 return;
2881 default:
2882 printf("Unknown Header(%d)\n", nh);
2883 return;
2884 }
2885
2886 if ((cp += hlen) >= end)
2887 goto trunc;
2888 }
2889 if (end - cp < 8)
2890 goto trunc;
2891
2892 putchar('\n');
2893 return;
2894
2895 trunc:
2896 printf("...\n");
2897 return;
2898 }
2899
2900 void
2901 fill(char *bp, char *patp)
2902 {
2903 int ii, jj, kk;
2904 int pat[16];
2905 char *cp;
2906
2907 for (cp = patp; *cp; cp++)
2908 if (!isxdigit(*cp))
2909 errx(1, "patterns must be specified as hex digits");
2910 ii = sscanf(patp,
2911 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2912 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2913 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2914 &pat[13], &pat[14], &pat[15]);
2915
2916 /* xxx */
2917 if (ii > 0)
2918 for (kk = 0;
2919 kk <= MAXDATALEN - (8 + sizeof(struct tv32) + ii);
2920 kk += ii)
2921 for (jj = 0; jj < ii; ++jj)
2922 bp[jj + kk] = pat[jj];
2923 if (!(options & F_QUIET)) {
2924 (void)printf("PATTERN: 0x");
2925 for (jj = 0; jj < ii; ++jj)
2926 (void)printf("%02x", bp[jj] & 0xFF);
2927 (void)printf("\n");
2928 }
2929 }
2930
2931 #ifdef IPSEC
2932 #ifdef IPSEC_POLICY_IPSEC
2933 int
2934 setpolicy(int so __unused, char *policy)
2935 {
2936 char *buf;
2937
2938 if (policy == NULL)
2939 return 0; /* ignore */
2940
2941 buf = ipsec_set_policy(policy, strlen(policy));
2942 if (buf == NULL)
2943 errx(1, "%s", ipsec_strerror());
2944 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2945 ipsec_get_policylen(buf)) < 0)
2946 warnx("Unable to set IPsec policy");
2947 free(buf);
2948
2949 return 0;
2950 }
2951 #endif
2952 #endif
2953
2954 char *
2955 nigroup(char *name)
2956 {
2957 char *p;
2958 char *q;
2959 MD5_CTX ctxt;
2960 u_int8_t digest[16];
2961 u_int8_t c;
2962 size_t l;
2963 char hbuf[NI_MAXHOST];
2964 struct in6_addr in6;
2965
2966 p = strchr(name, '.');
2967 if (!p)
2968 p = name + strlen(name);
2969 l = p - name;
2970 if (l > 63 || l > sizeof(hbuf) - 1)
2971 return NULL; /*label too long*/
2972 strncpy(hbuf, name, l);
2973 hbuf[(int)l] = '\0';
2974
2975 for (q = name; *q; q++) {
2976 if (isupper(*(unsigned char *)q))
2977 *q = tolower(*(unsigned char *)q);
2978 }
2979
2980 /* generate 8 bytes of pseudo-random value. */
2981 memset(&ctxt, 0, sizeof(ctxt));
2982 MD5Init(&ctxt);
2983 c = l & 0xff;
2984 MD5Update(&ctxt, &c, sizeof(c));
2985 MD5Update(&ctxt, (unsigned char *)name, l);
2986 MD5Final(digest, &ctxt);
2987
2988 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
2989 return NULL; /*XXX*/
2990 bcopy(digest, &in6.s6_addr[12], 4);
2991
2992 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2993 return NULL;
2994
2995 return strdup(hbuf);
2996 }
2997
2998 uint32_t
2999 str2svc(const char *str)
3000 {
3001 uint32_t svc;
3002 char *endptr;
3003
3004 if (str == NULL || *str == '\0')
3005 svc = UINT32_MAX;
3006 else if (strcasecmp(str, "BK_SYS") == 0)
3007 return SO_TC_BK_SYS;
3008 else if (strcasecmp(str, "BK") == 0)
3009 return SO_TC_BK;
3010 else if (strcasecmp(str, "BE") == 0)
3011 return SO_TC_BE;
3012 else if (strcasecmp(str, "RD") == 0)
3013 return SO_TC_RD;
3014 else if (strcasecmp(str, "OAM") == 0)
3015 return SO_TC_OAM;
3016 else if (strcasecmp(str, "AV") == 0)
3017 return SO_TC_AV;
3018 else if (strcasecmp(str, "RV") == 0)
3019 return SO_TC_RV;
3020 else if (strcasecmp(str, "VI") == 0)
3021 return SO_TC_VI;
3022 else if (strcasecmp(str, "VO") == 0)
3023 return SO_TC_VO;
3024 else if (strcasecmp(str, "CTL") == 0)
3025 return SO_TC_CTL;
3026 else {
3027 svc = strtoul(str, &endptr, 0);
3028 if (*endptr != '\0')
3029 svc = UINT32_MAX;
3030 }
3031 return (svc);
3032 }
3033
3034 void
3035 usage(void)
3036 {
3037 (void)fprintf(stderr,
3038 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
3039 "A"
3040 #endif
3041 "usage: ping6 [-"
3042 "Dd"
3043 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
3044 "E"
3045 #endif
3046 "fH"
3047 #ifdef IPV6_USE_MIN_MTU
3048 "m"
3049 #endif
3050 "nNoqrRtvwW] "
3051 "[-a addrtype] [-b bufsiz] [-B boundif] [-c count]\n"
3052 " [-g gateway] [-h hoplimit] [-I interface] [-i wait] [-l preload]"
3053 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
3054 " [-P policy]"
3055 #endif
3056 "\n"
3057 " [-p pattern] [-S sourceaddr] [-s packetsize] [-z tclass] "
3058 "[hops ...] host\n");
3059 exit(1);
3060 }
mirror of network_cmds