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1 /*
2 * Copyright (c) 2002-2016 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 <stdbool.h>
147 #include <stdio.h>
148 #include <stdlib.h>
149 #include <string.h>
150 #include <unistd.h>
151 #ifdef HAVE_POLL_H
152 #include <poll.h>
153 #endif
154 #include <sysexits.h>
155 #include <getopt.h>
156
157 #ifdef IPSEC
158 #include <netinet6/ah.h>
159 #include <netinet6/ipsec.h>
160 #endif
161
162 #include "md5.h"
163
164 struct tv32 {
165 u_int32_t tv32_sec;
166 u_int32_t tv32_usec;
167 };
168
169 #define MAXPACKETLEN 131072
170 #define IP6LEN 40
171 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
172 #define ICMP6ECHOTMLEN sizeof(struct tv32)
173 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
174 # define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */
175 /* FQDN case, 64 bits of nonce + 32 bits ttl */
176 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
177 #define EXTRA 256 /* for AH and various other headers. weird. */
178 #define DEFDATALEN ICMP6ECHOTMLEN
179 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
180 #define NROUTES 9 /* number of record route slots */
181
182 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
183 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
184 #define SET(bit) (A(bit) |= B(bit))
185 #define CLR(bit) (A(bit) &= (~B(bit)))
186 #define TST(bit) (A(bit) & B(bit))
187
188 #define F_FLOOD 0x0001
189 #define F_INTERVAL 0x0002
190 #define F_PINGFILLED 0x0008
191 #define F_QUIET 0x0010
192 #define F_RROUTE 0x0020
193 #define F_SO_DEBUG 0x0040
194 #define F_PRTIME 0x0080
195 #define F_VERBOSE 0x0100
196 #ifdef IPSEC
197 #ifdef IPSEC_POLICY_IPSEC
198 #define F_POLICY 0x0400
199 #else
200 #define F_AUTHHDR 0x0200
201 #define F_ENCRYPT 0x0400
202 #endif /*IPSEC_POLICY_IPSEC*/
203 #endif /*IPSEC*/
204 #define F_NODEADDR 0x0800
205 #define F_FQDN 0x1000
206 #define F_INTERFACE 0x2000
207 #define F_SRCADDR 0x4000
208 #define F_HOSTNAME 0x10000
209 #define F_FQDNOLD 0x20000
210 #define F_NIGROUP 0x40000
211 #define F_SUPTYPES 0x80000
212 #define F_NOMINMTU 0x100000
213 #define F_ONCE 0x200000
214 #define F_AUDIBLE 0x400000
215 #define F_MISSED 0x800000
216 #define F_DONTFRAG 0x1000000
217 #define F_SWEEP 0x2000000
218 #define F_CONNECT 0x4000000
219 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
220 u_int options;
221
222 static int longopt_flag = 0;
223
224 #define LOF_CONNECT 0x01
225 #define LOF_PRTIME 0x02
226
227 static const struct option longopts[] = {
228 { "apple-connect", no_argument, &longopt_flag, LOF_CONNECT },
229 { "apple-time", no_argument, &longopt_flag, LOF_PRTIME },
230 { NULL, 0, NULL, 0 }
231 };
232
233
234 #define IN6LEN sizeof(struct in6_addr)
235 #define SA6LEN sizeof(struct sockaddr_in6)
236 #define DUMMY_PORT 10101
237
238 #define SIN6(s) ((struct sockaddr_in6 *)(s))
239
240 #define MAXTOS 255
241 /*
242 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
243 * number of received sequence numbers we can keep track of. Change 128
244 * to 8192 for complete accuracy...
245 */
246 #define MAX_DUP_CHK (8 * 8192)
247 int mx_dup_ck = MAX_DUP_CHK;
248 char rcvd_tbl[MAX_DUP_CHK / 8];
249
250 struct addrinfo *res;
251 struct sockaddr_in6 dst; /* who to ping6 */
252 struct sockaddr_in6 src; /* src addr of this packet */
253 socklen_t srclen;
254 int datalen = DEFDATALEN;
255 int s; /* socket file descriptor */
256 u_char outpack[MAXPACKETLEN];
257 char BSPACE = '\b'; /* characters written for flood */
258 char BBELL = '\a'; /* characters written for AUDIBLE */
259 char DOT = '.';
260 char *hostname;
261 int ident; /* process id to identify our packets */
262 u_int8_t nonce[8]; /* nonce field for node information */
263 int hoplimit = -1; /* hoplimit */
264 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
265 u_char *packet = NULL;
266 struct cmsghdr *cm = NULL;
267 char *boundif;
268 unsigned int ifscope;
269 int nocell;
270 #ifdef HAVE_POLL_H
271 struct pollfd fdmaskp[1];
272 #else
273 fd_set *fdmaskp = NULL;
274 int fdmasks;
275 #endif
276
277 /* counters */
278 long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
279 long npackets; /* max packets to transmit */
280 long nreceived; /* # of packets we got back */
281 long nrepeats; /* number of duplicates */
282 long ntransmitted; /* sequence # for outbound packets = #sent */
283 struct timeval interval = {1, 0}; /* interval between packets */
284 long snpackets = 0; /* max packets to transmit in one sweep */
285 long sntransmitted = 0; /* # of packets we sent in this sweep */
286 int sweepmax = 0; /* max value of payload in sweep */
287 int sweepmin = 0; /* start value of payload in sweep */
288 int sweepincr = 1; /* payload increment in sweep */
289
290 /* timing */
291 int timing; /* flag to do timing */
292 double tmin = 999999999.0; /* minimum round trip time */
293 double tmax = 0.0; /* maximum round trip time */
294 double tsum = 0.0; /* sum of all times, for doing average */
295 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
296
297 /* for node addresses */
298 u_short naflags;
299
300 /* for ancillary data(advanced API) */
301 struct msghdr smsghdr;
302 struct iovec smsgiov[2];
303 char *scmsg = NULL;
304
305 volatile sig_atomic_t seenalrm;
306 volatile sig_atomic_t seenint;
307 #ifdef SIGINFO
308 volatile sig_atomic_t seeninfo;
309 #endif
310
311 int rcvtclass = 0;
312
313 int use_sendmsg = 0;
314 int use_recvmsg = 0;
315 int so_traffic_class = SO_TC_CTL; /* use control class, by default */
316 int net_service_type = -1;
317
318 int32_t thiszone; /* seconds offset from gmt to local time */
319 extern int32_t gmt2local(time_t);
320 static void pr_currenttime(void);
321
322 int main(int, char *[]);
323 void fill(char *, char *);
324 int get_hoplim(struct msghdr *);
325 int get_pathmtu(struct msghdr *);
326 int get_tclass(struct msghdr *);
327 int get_so_traffic_class(struct msghdr *);
328 struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
329 void onsignal(int);
330 void retransmit(void);
331 void onint(int);
332 size_t pingerlen(void);
333 int pinger(void);
334 const char *pr_addr(struct sockaddr *, int);
335 void pr_icmph(struct icmp6_hdr *, u_char *);
336 void pr_iph(struct ip6_hdr *);
337 void pr_suptypes(struct icmp6_nodeinfo *, size_t);
338 void pr_nodeaddr(struct icmp6_nodeinfo *, int);
339 int myechoreply(const struct icmp6_hdr *);
340 int mynireply(const struct icmp6_nodeinfo *);
341 char *dnsdecode(const u_char **, const u_char *, const u_char *,
342 char *, size_t);
343 void pr_pack(u_char *, int, struct msghdr *);
344 void pr_exthdrs(struct msghdr *);
345 void pr_ip6opt(void *, size_t);
346 void pr_rthdr(void *, size_t);
347 int pr_bitrange(u_int32_t, int, int);
348 void pr_retip(struct ip6_hdr *, u_char *);
349 void summary(void);
350 void tvsub(struct timeval *, struct timeval *);
351 int setpolicy(int, char *);
352 char *nigroup(char *);
353 static int str2sotc(const char *, bool *);
354 static int str2netservicetype(const char *, bool *);
355 static u_int8_t str2tclass(const char *, bool *);
356 void usage(void);
357
358 int
359 main(int argc, char *argv[])
360 {
361 struct itimerval itimer;
362 struct sockaddr_in6 from;
363 #ifndef HAVE_ARC4RANDOM
364 struct timeval seed;
365 #endif
366 #ifdef HAVE_POLL_H
367 int timeout;
368 #else
369 struct timeval timeout, *tv;
370 #endif
371 struct addrinfo hints;
372 int cc, i;
373 int ch, hold, packlen, preload, optval, ret_ga;
374 u_char *datap;
375 char *e, *target, *ifname = NULL, *gateway = NULL;
376 int ip6optlen = 0;
377 struct cmsghdr *scmsgp = NULL;
378 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
379 u_long lsockbufsize;
380 int sockbufsize = 0;
381 #endif
382 int usepktinfo = 0;
383 struct in6_pktinfo *pktinfo = NULL;
384 #ifdef USE_RFC2292BIS
385 struct ip6_rthdr *rthdr = NULL;
386 #endif
387 #ifdef IPSEC_POLICY_IPSEC
388 char *policy_in = NULL;
389 char *policy_out = NULL;
390 #endif
391 double intval;
392 size_t rthlen;
393 #ifdef IPV6_USE_MIN_MTU
394 int mflag = 0;
395 #endif
396 /* T_CLASS value -1 means default, so -2 means do not bother */
397 int tclass = -2;
398 bool valid;
399 struct timeval intvl;
400
401 /* just to be sure */
402 memset(&smsghdr, 0, sizeof(smsghdr));
403 memset(&smsgiov, 0, sizeof(smsgiov));
404
405 preload = 0;
406 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
407 #ifndef IPSEC
408 #define ADDOPTS
409 #else
410 #ifdef IPSEC_POLICY_IPSEC
411 #define ADDOPTS "P:"
412 #else
413 #define ADDOPTS "AE"
414 #endif /*IPSEC_POLICY_IPSEC*/
415 #endif
416 while ((ch = getopt_long(argc, argv,
417 "a:b:B:Cc:DdfHG:g:h:I:i:k:K:l:mnNop:qrRS:s:tvwWz:" ADDOPTS,
418 longopts, NULL)) != -1) {
419 #undef ADDOPTS
420 switch (ch) {
421 case 'a':
422 {
423 char *cp;
424
425 options &= ~F_NOUSERDATA;
426 options |= F_NODEADDR;
427 for (cp = optarg; *cp != '\0'; cp++) {
428 switch (*cp) {
429 case 'a':
430 naflags |= NI_NODEADDR_FLAG_ALL;
431 break;
432 case 'c':
433 case 'C':
434 naflags |= NI_NODEADDR_FLAG_COMPAT;
435 break;
436 case 'l':
437 case 'L':
438 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
439 break;
440 case 's':
441 case 'S':
442 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
443 break;
444 case 'g':
445 case 'G':
446 naflags |= NI_NODEADDR_FLAG_GLOBAL;
447 break;
448 case 'A': /* experimental. not in the spec */
449 #ifdef NI_NODEADDR_FLAG_ANYCAST
450 naflags |= NI_NODEADDR_FLAG_ANYCAST;
451 break;
452 #else
453 errx(1, "-a A is not supported on "
454 "the platform");
455 /*NOTREACHED*/
456 #endif
457 default:
458 usage();
459 /*NOTREACHED*/
460 }
461 }
462 break;
463 }
464 case 'b':
465 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
466 errno = 0;
467 e = NULL;
468 lsockbufsize = strtoul(optarg, &e, 10);
469 sockbufsize = lsockbufsize;
470 if (errno || !*optarg || *e ||
471 sockbufsize != lsockbufsize)
472 errx(1, "invalid socket buffer size");
473 #else
474 errx(1, "-b option ignored: SO_SNDBUF/SO_RCVBUF "
475 "socket options not supported");
476 #endif
477 break;
478 case 'B':
479 boundif = optarg;
480 break;
481 case 'C':
482 nocell++;
483 break;
484 case 'c':
485 npackets = strtol(optarg, &e, 10);
486 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
487 errx(1,
488 "illegal number of packets -- %s", optarg);
489 break;
490 case 'D':
491 options |= F_DONTFRAG;
492 break;
493 case 'd':
494 options |= F_SO_DEBUG;
495 break;
496 case 'f':
497 if (getuid()) {
498 errno = EPERM;
499 errx(1, "Must be superuser to flood ping");
500 }
501 options |= F_FLOOD;
502 setbuf(stdout, (char *)NULL);
503 break;
504 case 'g':
505 gateway = optarg;
506 break;
507 case 'G': {
508 char *ptr ;
509 char *tofree;
510 unsigned long ultmp;
511
512 tofree = strdup(optarg);
513 if (tofree == NULL)
514 errx(1, "### strdup() failed");
515 ptr = tofree;
516 do {
517 char *str;
518 char *ep;
519
520 if ((str = strsep(&ptr, ",")) == NULL)
521 errx(1, "-G requires maximum packet size");
522 ultmp = strtoul(str, &ep, 0);
523 if (*ep || ep == optarg)
524 errx(EX_USAGE, "option -G invalid maximum packet size: `%s'",
525 str);
526 options |= F_SWEEP;
527 sweepmax = ultmp;
528 if (sweepmax < 1 || sweepmax > MAXDATALEN) {
529 errx(1,
530 "-G invalid maximum packet size, needs to be between 1 and %d",
531 MAXDATALEN);
532 }
533
534 if ((str = strsep(&ptr, ",")) == NULL)
535 break;
536 if (*str != 0) {
537 ultmp = strtoul(str, &ep, 0);
538 if (*ep || ep == optarg)
539 errx(EX_USAGE, "option -G invalid minimum packet size: `%s'",
540 str);
541 sweepmin = ultmp;
542 if (sweepmin < 0 || sweepmin > MAXDATALEN) {
543 errx(1,
544 "-G invalid minimum packet size, needs to be between 0 and %d",
545 MAXDATALEN);
546 }
547 }
548
549 if ((str = strsep(&ptr, ",")) == NULL)
550 break;
551 if (*str == 0)
552 break;
553 ultmp = strtoul(str, &ep, 0);
554 if (*ep || ep == optarg)
555 errx(EX_USAGE, "option -G invalid sweep increment size: `%s'",
556 str);
557 sweepincr = ultmp;
558 if (sweepincr < 1 || sweepincr > MAXDATALEN) {
559 errx(1,
560 "-G invalid sweep increment size, needs to be between 1 and %d",
561 MAXDATALEN);
562 }
563 } while (0);
564 free(tofree);
565 break;
566 }
567 case 'H':
568 options |= F_HOSTNAME;
569 break;
570 case 'h': /* hoplimit */
571 hoplimit = strtol(optarg, &e, 10);
572 if (*optarg == '\0' || *e != '\0')
573 errx(1, "illegal hoplimit %s", optarg);
574 if (255 < hoplimit || hoplimit < -1)
575 errx(1,
576 "illegal hoplimit -- %s", optarg);
577 break;
578 case 'I':
579 ifname = optarg;
580 options |= F_INTERFACE;
581 #ifndef USE_SIN6_SCOPE_ID
582 usepktinfo++;
583 #endif
584 break;
585 case 'i': /* wait between sending packets */
586 intval = strtod(optarg, &e);
587 if (*optarg == '\0' || *e != '\0')
588 errx(1, "illegal timing interval %s", optarg);
589 if (intval < 0.1 && getuid()) {
590 errx(1, "%s: only root may use interval < 0.1s",
591 strerror(EPERM));
592 }
593 interval.tv_sec = (long)intval;
594 interval.tv_usec =
595 (long)((intval - interval.tv_sec) * 1000000);
596 if (interval.tv_sec < 0)
597 errx(1, "illegal timing interval %s", optarg);
598 /* less than 1/hz does not make sense */
599 if (interval.tv_sec == 0 && interval.tv_usec < 1) {
600 warnx("too small interval, raised to .000001");
601 interval.tv_usec = 1;
602 }
603 options |= F_INTERVAL;
604 break;
605 case 'k':
606 if (strcasecmp(optarg, "sendmsg") == 0) {
607 use_sendmsg++;
608 break;
609 }
610 if (strcasecmp(optarg, "recvmsg") == 0) {
611 use_recvmsg++;
612 break;
613 }
614 so_traffic_class = str2sotc(optarg, &valid);
615 if (valid == false)
616 errx(EX_USAGE, "bad traffic class: `%s'",
617 optarg);
618 break;
619 case 'K':
620 if (strcasecmp(optarg, "sendmsg") == 0) {
621 use_sendmsg++;
622 break;
623 }
624 net_service_type = str2netservicetype(optarg, &valid);
625 if (valid == false)
626 errx(EX_USAGE, "bad network service type: `%s'",
627 optarg);
628 /* suppress default traffic class (-k can still be specified after -K) */
629 so_traffic_class = -1;
630 break;
631 case 'l':
632 if (getuid()) {
633 errno = EPERM;
634 errx(1, "Must be superuser to preload");
635 }
636 preload = strtol(optarg, &e, 10);
637 if (preload < 0 || *optarg == '\0' || *e != '\0')
638 errx(1, "illegal preload value -- %s", optarg);
639 break;
640 case 'm':
641 #ifdef IPV6_USE_MIN_MTU
642 mflag++;
643 break;
644 #else
645 errx(1, "-%c is not supported on this platform", ch);
646 /*NOTREACHED*/
647 #endif
648 case 'n':
649 options &= ~F_HOSTNAME;
650 break;
651 case 'N':
652 options |= F_NIGROUP;
653 break;
654 case 'o':
655 options |= F_ONCE;
656 break;
657 case 'p': /* fill buffer with user pattern */
658 options |= F_PINGFILLED;
659 fill((char *)datap, optarg);
660 break;
661 case 'q':
662 options |= F_QUIET;
663 break;
664 case 'r':
665 options |= F_AUDIBLE;
666 break;
667 case 'R':
668 options |= F_MISSED;
669 break;
670 case 'S':
671 memset(&hints, 0, sizeof(struct addrinfo));
672 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
673 hints.ai_family = AF_INET6;
674 hints.ai_socktype = SOCK_RAW;
675 hints.ai_protocol = IPPROTO_ICMPV6;
676
677 ret_ga = getaddrinfo(optarg, NULL, &hints, &res);
678 if (ret_ga) {
679 errx(1, "invalid source address: %s",
680 gai_strerror(ret_ga));
681 }
682 /*
683 * res->ai_family must be AF_INET6 and res->ai_addrlen
684 * must be sizeof(src).
685 */
686 memcpy(&src, res->ai_addr, res->ai_addrlen);
687 srclen = res->ai_addrlen;
688 freeaddrinfo(res);
689 res = NULL;
690 options |= F_SRCADDR;
691 break;
692 case 's': /* size of packet to send */
693 datalen = strtol(optarg, &e, 10);
694 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
695 errx(1, "illegal datalen value -- %s", optarg);
696 if (datalen > MAXDATALEN) {
697 errx(1,
698 "datalen value too large, maximum is %d",
699 MAXDATALEN);
700 }
701 break;
702 case 't':
703 options &= ~F_NOUSERDATA;
704 options |= F_SUPTYPES;
705 break;
706 case 'v':
707 options |= F_VERBOSE;
708 break;
709 case 'w':
710 options &= ~F_NOUSERDATA;
711 options |= F_FQDN;
712 break;
713 case 'W':
714 options &= ~F_NOUSERDATA;
715 options |= F_FQDNOLD;
716 break;
717 case 'z':
718 tclass = str2tclass(optarg, &valid);
719 if (valid == false)
720 errx(1, "illegal TOS value -- %s", optarg);
721 rcvtclass = 1;
722 break;
723 #ifdef IPSEC
724 #ifdef IPSEC_POLICY_IPSEC
725 case 'P':
726 options |= F_POLICY;
727 if (!strncmp("in", optarg, 2)) {
728 if ((policy_in = strdup(optarg)) == NULL)
729 errx(1, "strdup");
730 } else if (!strncmp("out", optarg, 3)) {
731 if ((policy_out = strdup(optarg)) == NULL)
732 errx(1, "strdup");
733 } else
734 errx(1, "invalid security policy");
735 break;
736 #else
737 case 'A':
738 options |= F_AUTHHDR;
739 break;
740 case 'E':
741 options |= F_ENCRYPT;
742 break;
743 #endif /*IPSEC_POLICY_IPSEC*/
744 #endif /*IPSEC*/
745 case 0:
746 switch (longopt_flag) {
747 case LOF_CONNECT:
748 options |= F_CONNECT;
749 break;
750 case LOF_PRTIME:
751 options |= F_PRTIME;
752 thiszone = gmt2local(0);
753 break;
754 default:
755 break;
756 }
757 longopt_flag = 0;
758 break;
759 default:
760 usage();
761 /*NOTREACHED*/
762 }
763 }
764
765 if (boundif != NULL && (ifscope = if_nametoindex(boundif)) == 0)
766 errx(1, "bad interface name");
767
768 if ((options & F_SWEEP) && !sweepmax)
769 errx(EX_USAGE, "Maximum sweep size must be specified");
770
771 if ((options & F_SWEEP) && (options & F_NOUSERDATA))
772 errx(EX_USAGE, "Option -G incompatible with -t, -w and -W");
773
774 argc -= optind;
775 argv += optind;
776
777 if (argc < 1) {
778 usage();
779 /*NOTREACHED*/
780 }
781
782 if (argc > 1) {
783 #ifdef IPV6_RECVRTHDR /* 2292bis */
784 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
785 argc - 1));
786 #else /* RFC2292 */
787 rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1);
788 #endif
789 if (rthlen == 0) {
790 errx(1, "too many intermediate hops");
791 /*NOTREACHED*/
792 }
793 ip6optlen += rthlen;
794 }
795
796 if (options & F_NIGROUP) {
797 target = nigroup(argv[argc - 1]);
798 if (target == NULL) {
799 usage();
800 /*NOTREACHED*/
801 }
802 } else
803 target = argv[argc - 1];
804
805 /* getaddrinfo */
806 memset(&hints, 0, sizeof(struct addrinfo));
807 hints.ai_flags = AI_CANONNAME;
808 hints.ai_family = AF_INET6;
809 hints.ai_socktype = SOCK_RAW;
810 hints.ai_protocol = IPPROTO_ICMPV6;
811
812 ret_ga = getaddrinfo(target, NULL, &hints, &res);
813 if (ret_ga)
814 errx(1, "getaddrinfo -- %s", gai_strerror(ret_ga));
815 if (res->ai_canonname)
816 hostname = res->ai_canonname;
817 else
818 hostname = target;
819
820 if (!res->ai_addr)
821 errx(1, "getaddrinfo failed");
822
823 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
824
825 res->ai_socktype = getuid() ? SOCK_DGRAM : SOCK_RAW;
826 res->ai_protocol = IPPROTO_ICMPV6;
827
828 if ((s = socket(res->ai_family, res->ai_socktype,
829 res->ai_protocol)) < 0)
830 err(1, "socket");
831
832 if (ifscope != 0) {
833 if (setsockopt(s, IPPROTO_IPV6, IPV6_BOUND_IF,
834 (char *)&ifscope, sizeof (ifscope)) != 0)
835 err(1, "setsockopt(IPV6_BOUND_IF)");
836 }
837
838 if (nocell != 0) {
839 if (setsockopt(s, IPPROTO_IPV6, IPV6_NO_IFT_CELLULAR,
840 (char *)&nocell, sizeof (nocell)) != 0)
841 err(1, "setsockopt(IPV6_NO_IFT_CELLULAR)");
842 }
843
844 /* set the source address if specified. */
845 if ((options & F_SRCADDR) &&
846 bind(s, (struct sockaddr *)&src, srclen) != 0) {
847 err(1, "bind");
848 }
849
850 /* set the gateway (next hop) if specified */
851 if (gateway) {
852 struct addrinfo ghints, *gres;
853 int error;
854
855 memset(&ghints, 0, sizeof(ghints));
856 ghints.ai_family = AF_INET6;
857 ghints.ai_socktype = SOCK_RAW;
858 ghints.ai_protocol = IPPROTO_ICMPV6;
859
860 error = getaddrinfo(gateway, NULL, &hints, &gres);
861 if (error) {
862 errx(1, "getaddrinfo for the gateway %s: %s",
863 gateway, gai_strerror(error));
864 }
865 if (gres->ai_next && (options & F_VERBOSE))
866 warnx("gateway resolves to multiple addresses");
867
868 if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP,
869 gres->ai_addr, gres->ai_addrlen)) {
870 err(1, "setsockopt(IPV6_NEXTHOP)");
871 }
872
873 freeaddrinfo(gres);
874 }
875
876 /*
877 * let the kerel pass extension headers of incoming packets,
878 * for privileged socket options
879 */
880 if ((options & F_VERBOSE) != 0) {
881 int opton = 1;
882
883 #ifdef IPV6_RECVHOPOPTS
884 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
885 sizeof(opton)))
886 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
887 #else /* old adv. API */
888 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
889 sizeof(opton)))
890 err(1, "setsockopt(IPV6_HOPOPTS)");
891 #endif
892 #ifdef IPV6_RECVDSTOPTS
893 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
894 sizeof(opton)))
895 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
896 #else /* old adv. API */
897 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
898 sizeof(opton)))
899 err(1, "setsockopt(IPV6_DSTOPTS)");
900 #endif
901 #ifdef IPV6_RECVRTHDRDSTOPTS
902 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
903 sizeof(opton)))
904 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
905 #endif
906 }
907
908 /* revoke root privilege */
909 if (seteuid(getuid()) != 0)
910 err(1, "seteuid() failed");
911 if (setuid(getuid()) != 0)
912 err(1, "setuid() failed");
913
914 if ((options & F_FLOOD) && (options & F_INTERVAL))
915 errx(1, "-f and -i incompatible options");
916
917 if ((options & F_CONNECT)) {
918 if (connect(s, (struct sockaddr *)&dst, sizeof(dst)) == -1)
919 err(EX_OSERR, "connect");
920 }
921
922 if (sweepmax) {
923 if (sweepmin >= sweepmax)
924 errx(EX_USAGE, "Maximum packet size must be greater than the minimum packet size");
925
926 if (datalen != DEFDATALEN)
927 errx(EX_USAGE, "Packet size and ping sweep are mutually exclusive");
928
929 if (npackets > 0) {
930 snpackets = npackets;
931 npackets = 0;
932 } else
933 snpackets = 1;
934 datalen = sweepmin;
935 }
936
937 if ((options & F_NOUSERDATA) == 0) {
938 /* in F_VERBOSE case, we may get non-echoreply packets*/
939 if (options & F_VERBOSE)
940 packlen = MAX(2048, sweepmax) + IP6LEN + ICMP6ECHOLEN + EXTRA;
941 else
942 packlen = MAX(datalen, sweepmax) + IP6LEN + ICMP6ECHOLEN + EXTRA;
943 } else {
944 /* suppress timing for node information query */
945 timing = 0;
946 datalen = 2048;
947 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
948 }
949
950 if (!(packet = (u_char *)malloc((u_int)MAX(datalen, sweepmax))))
951 err(1, "Unable to allocate packet");
952 if (!(options & F_PINGFILLED))
953 for (i = ICMP6ECHOLEN; i < MAX(datalen, sweepmax); ++i)
954 *datap++ = i;
955
956 ident = getpid() & 0xFFFF;
957 #ifndef HAVE_ARC4RANDOM
958 gettimeofday(&seed, NULL);
959 srand((unsigned int)(seed.tv_sec ^ seed.tv_usec ^ (long)ident));
960 memset(nonce, 0, sizeof(nonce));
961 for (i = 0; i < sizeof(nonce); i += sizeof(int))
962 *((int *)&nonce[i]) = rand();
963 #else
964 memset(nonce, 0, sizeof(nonce));
965 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
966 *((u_int32_t *)&nonce[i]) = arc4random();
967 #endif
968 optval = 1;
969 if (options & F_DONTFRAG)
970 if (setsockopt(s, IPPROTO_IPV6, IPV6_DONTFRAG,
971 &optval, sizeof(optval)) == -1)
972 err(1, "IPV6_DONTFRAG");
973 hold = 1;
974 if (options & F_SO_DEBUG)
975 (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
976 sizeof(hold));
977
978 hold = 1;
979 (void) setsockopt(s, SOL_SOCKET, SO_RECV_ANYIF, (char *)&hold,
980 sizeof(hold));
981
982 optval = IPV6_DEFHLIM;
983 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
984 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
985 &optval, sizeof(optval)) == -1)
986 err(1, "IPV6_MULTICAST_HOPS");
987 #ifdef IPV6_USE_MIN_MTU
988 if (mflag != 1) {
989 optval = mflag > 1 ? 0 : 1;
990
991 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
992 &optval, sizeof(optval)) == -1)
993 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
994 }
995 #ifdef IPV6_RECVPATHMTU
996 else {
997 optval = 1;
998 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
999 &optval, sizeof(optval)) == -1)
1000 err(1, "setsockopt(IPV6_RECVPATHMTU)");
1001 }
1002 #endif /* IPV6_RECVPATHMTU */
1003 #endif /* IPV6_USE_MIN_MTU */
1004
1005 #ifdef IPSEC
1006 #ifdef IPSEC_POLICY_IPSEC
1007 if (options & F_POLICY) {
1008 if (setpolicy(s, policy_in) < 0)
1009 errx(1, "%s", ipsec_strerror());
1010 if (setpolicy(s, policy_out) < 0)
1011 errx(1, "%s", ipsec_strerror());
1012 }
1013 #else
1014 if (options & F_AUTHHDR) {
1015 optval = IPSEC_LEVEL_REQUIRE;
1016 #ifdef IPV6_AUTH_TRANS_LEVEL
1017 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
1018 &optval, sizeof(optval)) == -1)
1019 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
1020 #else /* old def */
1021 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
1022 &optval, sizeof(optval)) == -1)
1023 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
1024 #endif
1025 }
1026 if (options & F_ENCRYPT) {
1027 optval = IPSEC_LEVEL_REQUIRE;
1028 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
1029 &optval, sizeof(optval)) == -1)
1030 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
1031 }
1032 #endif /*IPSEC_POLICY_IPSEC*/
1033 #endif
1034
1035 #ifdef ICMP6_FILTER
1036 {
1037 struct icmp6_filter filt;
1038 if (!(options & F_VERBOSE)) {
1039 ICMP6_FILTER_SETBLOCKALL(&filt);
1040 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
1041 (options & F_NODEADDR) || (options & F_SUPTYPES))
1042 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
1043 else
1044 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
1045 } else {
1046 ICMP6_FILTER_SETPASSALL(&filt);
1047 }
1048 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
1049 sizeof(filt)) < 0)
1050 err(1, "setsockopt(ICMP6_FILTER)");
1051 }
1052 #endif /*ICMP6_FILTER*/
1053
1054 /* let the kerel pass extension headers of incoming packets */
1055 if ((options & F_VERBOSE) != 0) {
1056 int opton = 1;
1057
1058 #ifdef IPV6_RECVRTHDR
1059 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
1060 sizeof(opton)))
1061 err(1, "setsockopt(IPV6_RECVRTHDR)");
1062 #else /* old adv. API */
1063 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
1064 sizeof(opton)))
1065 err(1, "setsockopt(IPV6_RTHDR)");
1066 #endif
1067 }
1068
1069 if (tclass != -2) {
1070 int on = 1;
1071
1072 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVTCLASS, &on,
1073 sizeof(on)))
1074 err(1, "setsockopt(IPV6_RECVTCLASS)");
1075
1076 if (setsockopt(s, IPPROTO_IPV6, IPV6_TCLASS, &tclass,
1077 sizeof(tclass)))
1078 err(1, "setsockopt(IPV6_TCLASS)");
1079 }
1080
1081 /*
1082 optval = 1;
1083 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
1084 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
1085 &optval, sizeof(optval)) == -1)
1086 err(1, "IPV6_MULTICAST_LOOP");
1087 */
1088
1089 /* Specify the outgoing interface and/or the source address */
1090 if (usepktinfo)
1091 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
1092
1093 if (hoplimit != -1)
1094 ip6optlen += CMSG_SPACE(sizeof(int));
1095
1096 #ifdef IPV6_USE_MIN_MTU
1097 if (mflag != 1)
1098 ip6optlen += CMSG_SPACE(sizeof(int));
1099 #endif /* IPV6_USE_MIN_MTU */
1100
1101 if (tclass != -2)
1102 ip6optlen += CMSG_SPACE(sizeof(int));
1103
1104 if (use_sendmsg == 0) {
1105 if (net_service_type != -1)
1106 if (setsockopt(s, SOL_SOCKET, SO_NET_SERVICE_TYPE,
1107 (void *)&net_service_type, sizeof (net_service_type)) != 0)
1108 warn("setsockopt(SO_NET_SERVICE_TYPE");
1109 if (so_traffic_class != -1) {
1110 if (setsockopt(s, SOL_SOCKET, SO_TRAFFIC_CLASS,
1111 (void *)&so_traffic_class, sizeof (so_traffic_class)) != 0)
1112 warn("setsockopt(SO_TRAFFIC_CLASS");
1113
1114 }
1115 } else {
1116 if (net_service_type != -1)
1117 ip6optlen += CMSG_SPACE(sizeof(int));
1118 if (so_traffic_class != -1)
1119 ip6optlen += CMSG_SPACE(sizeof(int));
1120 }
1121 if (use_recvmsg > 0) {
1122 int on = 1;
1123 if (setsockopt(s, SOL_SOCKET, SO_RECV_TRAFFIC_CLASS,
1124 (void *)&on, sizeof (on)) != 0)
1125 warn("setsockopt(SO_RECV_TRAFFIC_CLASS");
1126 }
1127
1128 /* set IP6 packet options */
1129 if (ip6optlen) {
1130 if ((scmsg = (char *)malloc(ip6optlen)) == 0)
1131 errx(1, "can't allocate enough memory");
1132 smsghdr.msg_control = (caddr_t)scmsg;
1133 smsghdr.msg_controllen = ip6optlen;
1134 scmsgp = (struct cmsghdr *)scmsg;
1135 }
1136 if (usepktinfo) {
1137 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
1138 memset(pktinfo, 0, sizeof(*pktinfo));
1139 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
1140 scmsgp->cmsg_level = IPPROTO_IPV6;
1141 scmsgp->cmsg_type = IPV6_PKTINFO;
1142 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1143 }
1144
1145 /* set the outgoing interface */
1146 if (ifname) {
1147 #ifndef USE_SIN6_SCOPE_ID
1148 /* pktinfo must have already been allocated */
1149 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
1150 errx(1, "%s: invalid interface name", ifname);
1151 #else
1152 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
1153 errx(1, "%s: invalid interface name", ifname);
1154 #endif
1155 }
1156 if (hoplimit != -1) {
1157 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1158 scmsgp->cmsg_level = IPPROTO_IPV6;
1159 scmsgp->cmsg_type = IPV6_HOPLIMIT;
1160 *(int *)(CMSG_DATA(scmsgp)) = hoplimit;
1161
1162 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1163 }
1164
1165 #ifdef IPV6_USE_MIN_MTU
1166 if (mflag != 1) {
1167 optval = mflag > 1 ? 0 : 1;
1168
1169 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1170 scmsgp->cmsg_level = IPPROTO_IPV6;
1171 scmsgp->cmsg_type = IPV6_USE_MIN_MTU;
1172 *(int *)(CMSG_DATA(scmsgp)) = optval;
1173
1174 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1175 }
1176 #endif /* IPV6_USE_MIN_MTU */
1177
1178 if (argc > 1) { /* some intermediate addrs are specified */
1179 int hops, error;
1180 #ifdef USE_RFC2292BIS
1181 int rthdrlen;
1182 #endif
1183
1184 #ifdef USE_RFC2292BIS
1185 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
1186 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
1187 scmsgp->cmsg_level = IPPROTO_IPV6;
1188 scmsgp->cmsg_type = IPV6_RTHDR;
1189 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
1190 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
1191 IPV6_RTHDR_TYPE_0, argc - 1);
1192 if (rthdr == NULL)
1193 errx(1, "can't initialize rthdr");
1194 #else /* old advanced API */
1195 if ((scmsgp = (struct cmsghdr *)inet6_rthdr_init(scmsgp,
1196 IPV6_RTHDR_TYPE_0)) == 0)
1197 errx(1, "can't initialize rthdr");
1198 #endif /* USE_RFC2292BIS */
1199
1200 for (hops = 0; hops < argc - 1; hops++) {
1201 struct addrinfo *iaip;
1202
1203 if ((error = getaddrinfo(argv[hops], NULL, &hints,
1204 &iaip)))
1205 errx(1, "%s", gai_strerror(error));
1206 if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6)
1207 errx(1,
1208 "bad addr family of an intermediate addr");
1209
1210 #ifdef USE_RFC2292BIS
1211 if (inet6_rth_add(rthdr,
1212 &(SIN6(iaip->ai_addr))->sin6_addr))
1213 errx(1, "can't add an intermediate node");
1214 #else /* old advanced API */
1215 if (inet6_rthdr_add(scmsgp,
1216 &(SIN6(iaip->ai_addr))->sin6_addr,
1217 IPV6_RTHDR_LOOSE))
1218 errx(1, "can't add an intermediate node");
1219 #endif /* USE_RFC2292BIS */
1220 freeaddrinfo(iaip);
1221 }
1222
1223 #ifndef USE_RFC2292BIS
1224 if (inet6_rthdr_lasthop(scmsgp, IPV6_RTHDR_LOOSE))
1225 errx(1, "can't set the last flag");
1226 #endif
1227
1228 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1229 }
1230
1231 if (tclass != -2) {
1232 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1233 scmsgp->cmsg_level = IPPROTO_IPV6;
1234 scmsgp->cmsg_type = IPV6_TCLASS;
1235 *(int *)(CMSG_DATA(scmsgp)) = tclass;
1236
1237 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1238 }
1239 if (use_sendmsg != 0) {
1240 if (so_traffic_class != -1) {
1241 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1242 scmsgp->cmsg_level = SOL_SOCKET;
1243 scmsgp->cmsg_type = SO_TRAFFIC_CLASS;
1244 *(int *)(CMSG_DATA(scmsgp)) = so_traffic_class;
1245
1246 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
1247 }
1248 if (net_service_type != -1) {
1249 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
1250 scmsgp->cmsg_level = SOL_SOCKET;
1251 scmsgp->cmsg_type = SO_NET_SERVICE_TYPE;
1252 *(int *)(CMSG_DATA(scmsgp)) = net_service_type;
1253 }
1254 }
1255 if (!(options & F_SRCADDR)) {
1256 /*
1257 * get the source address. XXX since we revoked the root
1258 * privilege, we cannot use a raw socket for this.
1259 */
1260 int dummy;
1261 socklen_t len = sizeof(src);
1262
1263 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1264 err(1, "UDP socket");
1265
1266 if (ifscope != 0) {
1267 if (setsockopt(dummy, IPPROTO_IPV6, IPV6_BOUND_IF,
1268 (char *)&ifscope, sizeof (ifscope)) != 0)
1269 err(1, "setsockopt(IPV6_BOUND_IF)");
1270 }
1271
1272 if (nocell != 0) {
1273 if (setsockopt(dummy, IPPROTO_IPV6, IPV6_NO_IFT_CELLULAR,
1274 (char *)&nocell, sizeof (nocell)) != 0)
1275 err(1, "setsockopt(IPV6_NO_IFT_CELLULAR)");
1276 }
1277
1278 src.sin6_family = AF_INET6;
1279 src.sin6_addr = dst.sin6_addr;
1280 src.sin6_port = ntohs(DUMMY_PORT);
1281 src.sin6_scope_id = dst.sin6_scope_id;
1282
1283 #ifdef USE_RFC2292BIS
1284 if (pktinfo &&
1285 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
1286 (void *)pktinfo, sizeof(*pktinfo)))
1287 err(1, "UDP setsockopt(IPV6_PKTINFO)");
1288
1289 if (hoplimit != -1 &&
1290 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
1291 (void *)&hoplimit, sizeof(hoplimit)))
1292 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
1293
1294 if (hoplimit != -1 &&
1295 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
1296 (void *)&hoplimit, sizeof(hoplimit)))
1297 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
1298
1299 if (rthdr &&
1300 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
1301 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
1302 err(1, "UDP setsockopt(IPV6_RTHDR)");
1303 #else /* old advanced API */
1304 if (smsghdr.msg_control &&
1305 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS,
1306 (void *)smsghdr.msg_control, smsghdr.msg_controllen))
1307 err(1, "UDP setsockopt(IPV6_PKTOPTIONS)");
1308 #endif
1309
1310 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
1311 err(1, "UDP connect");
1312
1313 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
1314 err(1, "getsockname");
1315
1316 close(dummy);
1317 }
1318
1319 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
1320 if (sockbufsize) {
1321 if (MAX(datalen, sweepmax) > sockbufsize)
1322 warnx("you need -b to increase socket buffer size");
1323 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
1324 sizeof(sockbufsize)) < 0)
1325 err(1, "setsockopt(SO_SNDBUF)");
1326 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
1327 sizeof(sockbufsize)) < 0)
1328 err(1, "setsockopt(SO_RCVBUF)");
1329 }
1330 else {
1331 if (MAX(datalen, sweepmax) > 8 * 1024) /*XXX*/
1332 warnx("you need -b to increase socket buffer size");
1333 /*
1334 * When pinging the broadcast address, you can get a lot of
1335 * answers. Doing something so evil is useful if you are trying
1336 * to stress the ethernet, or just want to fill the arp cache
1337 * to get some stuff for /etc/ethers.
1338 */
1339 hold = 48 * 1024;
1340 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
1341 sizeof(hold));
1342 }
1343 #endif
1344
1345 optval = 1;
1346 #ifndef USE_SIN6_SCOPE_ID
1347 #ifdef IPV6_RECVPKTINFO
1348 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
1349 sizeof(optval)) < 0)
1350 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
1351 #else /* old adv. API */
1352 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
1353 sizeof(optval)) < 0)
1354 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
1355 #endif
1356 #endif /* USE_SIN6_SCOPE_ID */
1357 #ifdef IPV6_RECVHOPLIMIT
1358 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
1359 sizeof(optval)) < 0)
1360 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
1361 #else /* old adv. API */
1362 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
1363 sizeof(optval)) < 0)
1364 warn("setsockopt(IPV6_HOPLIMIT, %d, %lu)",
1365 optval, sizeof(optval)); /* XXX err? */
1366 #endif
1367
1368 if (sweepmax)
1369 printf("PING6(40+8+[%lu...%lu] bytes) ",
1370 (unsigned long)(sweepmin),
1371 (unsigned long)(sweepmax));
1372 else
1373 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
1374 (unsigned long)(pingerlen() - 8));
1375 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
1376 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
1377
1378 while (preload--) /* Fire off them quickies. */
1379 (void)pinger();
1380
1381 /*
1382 * rdar://25829310
1383 *
1384 * Clear blocked signals inherited from the parent
1385 */
1386 sigset_t newset;
1387 sigemptyset(&newset);
1388 if (sigprocmask(SIG_SETMASK, &newset, NULL) != 0)
1389 err(EX_OSERR, "sigprocmask(newset)");
1390
1391 seenalrm = seenint = 0;
1392 #ifdef SIGINFO
1393 seeninfo = 0;
1394 #endif
1395
1396 (void)signal(SIGINT, onsignal);
1397 #ifdef SIGINFO
1398 (void)signal(SIGINFO, onsignal);
1399 #endif
1400
1401 if ((options & F_FLOOD) == 0) {
1402 if (signal(SIGALRM, onsignal) == SIG_ERR)
1403 warn("signal(SIGALRM)");
1404 itimer.it_interval = interval;
1405 itimer.it_value = interval;
1406 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1407 if (ntransmitted == 0)
1408 retransmit();
1409 }
1410
1411 if (options & F_FLOOD) {
1412 intvl.tv_sec = 0;
1413 intvl.tv_usec = 10000;
1414 } else {
1415 intvl.tv_sec = interval.tv_sec;
1416 intvl.tv_usec = interval.tv_usec;
1417 }
1418
1419 #ifndef HAVE_POLL_H
1420 fdmasks = howmany(s + 1, NFDBITS) * sizeof(fd_mask);
1421 if ((fdmaskp = malloc(fdmasks)) == NULL)
1422 err(1, "malloc");
1423 #endif
1424
1425 /* For control (ancillary) data received from recvmsg() */
1426 cm = (struct cmsghdr *)malloc(CONTROLLEN);
1427 if (cm == NULL)
1428 err(1, "malloc");
1429
1430 for (;;) {
1431 struct msghdr m;
1432 struct iovec iov[2];
1433
1434 /* signal handling */
1435 if (seenalrm) {
1436 seenalrm = 0;
1437 /* last packet sent, timeout reached? */
1438 if (npackets && ntransmitted >= npackets)
1439 break;
1440 /* sweep done ? */
1441 if (sweepmax && datalen > sweepmax)
1442 break;
1443 retransmit();
1444 continue;
1445 }
1446 if (seenint) {
1447 seenint = 0;
1448 onint(SIGINT);
1449 continue;
1450 }
1451 #ifdef SIGINFO
1452 if (seeninfo) {
1453 seeninfo = 0;
1454 summary();
1455 continue;
1456 }
1457 #endif
1458
1459 if (options & F_FLOOD) {
1460 if (pinger() != 0)
1461 break;
1462 #ifdef HAVE_POLL_H
1463 timeout = 10;
1464 #else
1465 timeout.tv_sec = 0;
1466 timeout.tv_usec = 10000;
1467 tv = &timeout;
1468 #endif
1469 } else {
1470 #ifdef HAVE_POLL_H
1471 timeout = INFTIM;
1472 #else
1473 tv = NULL;
1474 #endif
1475 }
1476 #ifdef HAVE_POLL_H
1477 fdmaskp[0].fd = s;
1478 fdmaskp[0].events = POLLIN;
1479 cc = poll(fdmaskp, 1, timeout);
1480 #else
1481 memset(fdmaskp, 0, fdmasks);
1482 FD_SET(s, fdmaskp);
1483 cc = select(s + 1, fdmaskp, NULL, NULL, tv);
1484 #endif
1485 if (cc < 0) {
1486 if (errno != EINTR) {
1487 #ifdef HAVE_POLL_H
1488 warn("poll");
1489 #else
1490 warn("select");
1491 #endif
1492 sleep(1);
1493 }
1494 continue;
1495 } else if (cc == 0) {
1496 continue;
1497 }
1498 m.msg_name = (caddr_t)&from;
1499 m.msg_namelen = sizeof(from);
1500 memset(&iov, 0, sizeof(iov));
1501 iov[0].iov_base = (caddr_t)packet;
1502 iov[0].iov_len = packlen;
1503 m.msg_iov = iov;
1504 m.msg_iovlen = 1;
1505 memset(cm, 0, CONTROLLEN);
1506 m.msg_control = (void *)cm;
1507 m.msg_controllen = CONTROLLEN;
1508
1509 cc = recvmsg(s, &m, 0);
1510 if (cc < 0) {
1511 if (errno != EINTR) {
1512 warn("recvmsg");
1513 sleep(1);
1514 }
1515 continue;
1516 } else if (cc == 0) {
1517 int mtu;
1518
1519 /*
1520 * receive control messages only. Process the
1521 * exceptions (currently the only possibility is
1522 * a path MTU notification.)
1523 */
1524 if ((mtu = get_pathmtu(&m)) > 0) {
1525 if ((options & F_VERBOSE) != 0) {
1526 printf("new path MTU (%d) is "
1527 "notified\n", mtu);
1528 }
1529 }
1530 continue;
1531 } else {
1532 /*
1533 * an ICMPv6 message (probably an echoreply) arrived.
1534 */
1535 pr_pack(packet, cc, &m);
1536 }
1537 if (((options & F_ONCE) != 0 && nreceived > 0) ||
1538 (npackets > 0 && nreceived >= npackets))
1539 break;
1540 if (ntransmitted - nreceived - 1 > nmissedmax) {
1541 nmissedmax = ntransmitted - nreceived - 1;
1542 if (options & F_MISSED)
1543 (void)write(STDOUT_FILENO, &BBELL, 1);
1544 }
1545 }
1546 summary();
1547
1548 if (res != NULL)
1549 freeaddrinfo(res);
1550
1551 if (packet != NULL)
1552 free(packet);
1553
1554 if (cm != NULL)
1555 free(cm);
1556
1557 if (scmsg != NULL)
1558 free(scmsg);
1559
1560 #ifndef HAVE_POLL_H
1561 if (fdmaskp != NULL)
1562 free(fdmaskp);
1563 #endif
1564
1565 exit(nreceived == 0 ? 2 : 0);
1566 }
1567
1568 void
1569 onsignal(int sig)
1570 {
1571 fflush(stdout);
1572
1573 switch (sig) {
1574 case SIGALRM:
1575 seenalrm++;
1576 break;
1577 case SIGINT:
1578 seenint++;
1579 break;
1580 #ifdef SIGINFO
1581 case SIGINFO:
1582 seeninfo++;
1583 break;
1584 #endif
1585 }
1586 }
1587
1588 /*
1589 * retransmit --
1590 * This routine transmits another ping6.
1591 */
1592 void
1593 retransmit(void)
1594 {
1595 struct itimerval itimer;
1596
1597 if (pinger() == 0) {
1598 return;
1599 }
1600 /*
1601 * If we're not transmitting any more packets, change the timer
1602 * to wait two round-trip times if we've received any packets or
1603 * ten seconds if we haven't.
1604 */
1605 #define MAXWAIT 10
1606 if (nreceived) {
1607 itimer.it_value.tv_sec = 2 * tmax / 1000;
1608 if (itimer.it_value.tv_sec == 0)
1609 itimer.it_value.tv_sec = 1;
1610 } else
1611 itimer.it_value.tv_sec = MAXWAIT;
1612 itimer.it_interval.tv_sec = 0;
1613 itimer.it_interval.tv_usec = 0;
1614 itimer.it_value.tv_usec = 0;
1615
1616 (void)signal(SIGALRM, onsignal);
1617 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1618 }
1619
1620 /*
1621 * pinger --
1622 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1623 * will be added on by the kernel. The ID field is our UNIX process ID,
1624 * and the sequence number is an ascending integer. The first 8 bytes
1625 * of the data portion are used to hold a UNIX "timeval" struct in VAX
1626 * byte-order, to compute the round-trip time.
1627 */
1628 size_t
1629 pingerlen(void)
1630 {
1631 size_t l;
1632
1633 if (options & F_FQDN)
1634 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1635 else if (options & F_FQDNOLD)
1636 l = ICMP6_NIQLEN;
1637 else if (options & F_NODEADDR)
1638 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1639 else if (options & F_SUPTYPES)
1640 l = ICMP6_NIQLEN;
1641 else
1642 l = ICMP6ECHOLEN + datalen;
1643
1644 return l;
1645 }
1646
1647 int
1648 pinger(void)
1649 {
1650 struct icmp6_hdr *icp;
1651 int i, cc;
1652 struct icmp6_nodeinfo *nip;
1653 int seq;
1654
1655 if (npackets && ntransmitted >= npackets)
1656 return(-1); /* no more transmission */
1657
1658 if (sweepmax && sntransmitted == snpackets) {
1659 datalen += sweepincr;
1660 if (datalen > sweepmax)
1661 return(-1); /* no more transmission */
1662 sntransmitted = 0;
1663 }
1664
1665 icp = (struct icmp6_hdr *)outpack;
1666 nip = (struct icmp6_nodeinfo *)outpack;
1667 memset(icp, 0, sizeof(*icp));
1668 icp->icmp6_cksum = 0;
1669 seq = ntransmitted++;
1670 CLR(seq % mx_dup_ck);
1671
1672 if (options & F_FQDN) {
1673 icp->icmp6_type = ICMP6_NI_QUERY;
1674 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1675 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1676 nip->ni_flags = htons(0);
1677
1678 memcpy(nip->icmp6_ni_nonce, nonce,
1679 sizeof(nip->icmp6_ni_nonce));
1680 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1681
1682 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1683 sizeof(dst.sin6_addr));
1684 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1685 datalen = 0;
1686 } else if (options & F_FQDNOLD) {
1687 /* packet format in 03 draft - no Subject data on queries */
1688 icp->icmp6_type = ICMP6_NI_QUERY;
1689 icp->icmp6_code = 0; /* code field is always 0 */
1690 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1691 nip->ni_flags = htons(0);
1692
1693 memcpy(nip->icmp6_ni_nonce, nonce,
1694 sizeof(nip->icmp6_ni_nonce));
1695 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1696
1697 cc = ICMP6_NIQLEN;
1698 datalen = 0;
1699 } else if (options & F_NODEADDR) {
1700 icp->icmp6_type = ICMP6_NI_QUERY;
1701 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1702 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1703 nip->ni_flags = naflags;
1704
1705 memcpy(nip->icmp6_ni_nonce, nonce,
1706 sizeof(nip->icmp6_ni_nonce));
1707 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1708
1709 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1710 sizeof(dst.sin6_addr));
1711 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1712 datalen = 0;
1713 } else if (options & F_SUPTYPES) {
1714 icp->icmp6_type = ICMP6_NI_QUERY;
1715 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1716 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1717 /* we support compressed bitmap */
1718 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1719
1720 memcpy(nip->icmp6_ni_nonce, nonce,
1721 sizeof(nip->icmp6_ni_nonce));
1722 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1723 cc = ICMP6_NIQLEN;
1724 datalen = 0;
1725 } else {
1726 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1727 icp->icmp6_code = 0;
1728 icp->icmp6_id = htons(ident);
1729 icp->icmp6_seq = ntohs(seq);
1730 if (datalen >= sizeof(struct tv32)) {
1731 /* we can time transfer */
1732 timing = 1;
1733 } else
1734 timing = 0;
1735 if (timing) {
1736 struct timeval tv;
1737 struct tv32 *tv32;
1738 (void)gettimeofday(&tv, NULL);
1739 tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN];
1740 tv32->tv32_sec = htonl(tv.tv_sec);
1741 tv32->tv32_usec = htonl(tv.tv_usec);
1742 }
1743 cc = ICMP6ECHOLEN + datalen;
1744 }
1745
1746 #ifdef DIAGNOSTIC
1747 if (pingerlen() != cc)
1748 errx(1, "internal error; length mismatch");
1749 #endif
1750
1751 if ((options & F_CONNECT)) {
1752 smsghdr.msg_name = NULL;
1753 smsghdr.msg_namelen = 0;
1754 } else {
1755 smsghdr.msg_name = (caddr_t)&dst;
1756 smsghdr.msg_namelen = sizeof(dst);
1757 }
1758 memset(&smsgiov, 0, sizeof(smsgiov));
1759 smsgiov[0].iov_base = (caddr_t)outpack;
1760 smsgiov[0].iov_len = cc;
1761 smsghdr.msg_iov = smsgiov;
1762 smsghdr.msg_iovlen = 1;
1763
1764 i = sendmsg(s, &smsghdr, 0);
1765
1766 if (i < 0 || i != cc) {
1767 if (i < 0)
1768 warn("sendmsg");
1769 (void)printf("ping6: wrote %s %d chars, ret=%d\n",
1770 hostname, cc, i);
1771 }
1772 sntransmitted++;
1773 if (!(options & F_QUIET) && options & F_FLOOD)
1774 (void)write(STDOUT_FILENO, &DOT, 1);
1775
1776 return(0);
1777 }
1778
1779 int
1780 myechoreply(const struct icmp6_hdr *icp)
1781 {
1782 if (ntohs(icp->icmp6_id) == ident)
1783 return 1;
1784 else
1785 return 0;
1786 }
1787
1788 int
1789 mynireply(const struct icmp6_nodeinfo *nip)
1790 {
1791 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1792 nonce + sizeof(u_int16_t),
1793 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1794 return 1;
1795 else
1796 return 0;
1797 }
1798
1799 char *
1800 dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf,
1801 size_t bufsiz)
1802 /*base for compressed name*/
1803 {
1804 int i = 0;
1805 const u_char *cp;
1806 char cresult[NS_MAXDNAME + 1];
1807 const u_char *comp;
1808 int l;
1809
1810 cp = *sp;
1811 *buf = '\0';
1812
1813 if (cp >= ep)
1814 return NULL;
1815 while (cp < ep) {
1816 i = *cp;
1817 if (i == 0 || cp != *sp) {
1818 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1819 return NULL; /*result overrun*/
1820 }
1821 if (i == 0)
1822 break;
1823 cp++;
1824
1825 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1826 /* DNS compression */
1827 if (!base)
1828 return NULL;
1829
1830 comp = base + (i & 0x3f);
1831 if (dnsdecode(&comp, cp, base, cresult,
1832 sizeof(cresult)) == NULL)
1833 return NULL;
1834 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1835 return NULL; /*result overrun*/
1836 break;
1837 } else if ((i & 0x3f) == i) {
1838 if (i > ep - cp)
1839 return NULL; /*source overrun*/
1840 while (i-- > 0 && cp < ep) {
1841 l = snprintf(cresult, sizeof(cresult),
1842 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1843 if (l >= sizeof(cresult) || l < 0)
1844 return NULL;
1845 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1846 return NULL; /*result overrun*/
1847 cp++;
1848 }
1849 } else
1850 return NULL; /*invalid label*/
1851 }
1852 if (i != 0)
1853 return NULL; /*not terminated*/
1854 cp++;
1855 *sp = cp;
1856 return buf;
1857 }
1858
1859 /*
1860 * pr_pack --
1861 * Print out the packet, if it came from us. This logic is necessary
1862 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1863 * which arrive ('tis only fair). This permits multiple copies of this
1864 * program to be run without having intermingled output (or statistics!).
1865 */
1866 void
1867 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1868 {
1869 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1870 struct icmp6_hdr *icp;
1871 struct icmp6_nodeinfo *ni;
1872 int i;
1873 int hoplim;
1874 struct sockaddr *from;
1875 int fromlen;
1876 u_char *cp = NULL, *dp, *end = buf + cc;
1877 struct in6_pktinfo *pktinfo = NULL;
1878 struct timeval tv, tp;
1879 struct tv32 *tpp;
1880 double triptime = 0;
1881 int dupflag;
1882 size_t off;
1883 int oldfqdn;
1884 u_int16_t seq;
1885 char dnsname[NS_MAXDNAME + 1];
1886 int tclass = 0;
1887 int sotc = -1;
1888
1889 (void)gettimeofday(&tv, NULL);
1890
1891 if (!mhdr || !mhdr->msg_name ||
1892 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1893 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1894 if (options & F_VERBOSE)
1895 warnx("invalid peername");
1896 return;
1897 }
1898 from = (struct sockaddr *)mhdr->msg_name;
1899 fromlen = mhdr->msg_namelen;
1900 if (cc < sizeof(struct icmp6_hdr)) {
1901 if (options & F_VERBOSE)
1902 warnx("packet too short (%d bytes) from %s", cc,
1903 pr_addr(from, fromlen));
1904 return;
1905 }
1906 if (((mhdr->msg_flags & MSG_CTRUNC) != 0) &&
1907 (options & F_VERBOSE) != 0)
1908 warnx("some control data discarded, insufficient buffer size");
1909 icp = (struct icmp6_hdr *)buf;
1910 ni = (struct icmp6_nodeinfo *)buf;
1911 off = 0;
1912
1913 if ((hoplim = get_hoplim(mhdr)) == -1) {
1914 warnx("failed to get receiving hop limit");
1915 return;
1916 }
1917 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1918 warnx("failed to get receiving packet information");
1919 return;
1920 }
1921 if (rcvtclass && (tclass = get_tclass(mhdr)) == -1) {
1922 warnx("failed to get receiving traffic class");
1923 return;
1924 }
1925
1926 if (use_recvmsg > 0)
1927 sotc = get_so_traffic_class(mhdr);
1928
1929 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1930 seq = ntohs(icp->icmp6_seq);
1931 ++nreceived;
1932 if (timing) {
1933 tpp = (struct tv32 *)(icp + 1);
1934 tp.tv_sec = ntohl(tpp->tv32_sec);
1935 tp.tv_usec = ntohl(tpp->tv32_usec);
1936 tvsub(&tv, &tp);
1937 triptime = ((double)tv.tv_sec) * 1000.0 +
1938 ((double)tv.tv_usec) / 1000.0;
1939 tsum += triptime;
1940 tsumsq += triptime * triptime;
1941 if (triptime < tmin)
1942 tmin = triptime;
1943 if (triptime > tmax)
1944 tmax = triptime;
1945 }
1946
1947 if (TST(seq % mx_dup_ck)) {
1948 ++nrepeats;
1949 --nreceived;
1950 dupflag = 1;
1951 } else {
1952 SET(seq % mx_dup_ck);
1953 dupflag = 0;
1954 }
1955
1956 if (options & F_QUIET)
1957 return;
1958
1959 if (options & F_FLOOD)
1960 (void)write(STDOUT_FILENO, &BSPACE, 1);
1961 else {
1962 if (options & F_AUDIBLE)
1963 (void)write(STDOUT_FILENO, &BBELL, 1);
1964 if (options & F_PRTIME)
1965 pr_currenttime();
1966 (void)printf("%d bytes from %s, icmp_seq=%u", cc,
1967 pr_addr(from, fromlen), seq);
1968 (void)printf(" hlim=%d", hoplim);
1969 if ((options & F_VERBOSE) != 0) {
1970 struct sockaddr_in6 dstsa;
1971
1972 memset(&dstsa, 0, sizeof(dstsa));
1973 dstsa.sin6_family = AF_INET6;
1974 dstsa.sin6_len = sizeof(dstsa);
1975 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1976 dstsa.sin6_addr = pktinfo->ipi6_addr;
1977 (void)printf(" dst=%s",
1978 pr_addr((struct sockaddr *)&dstsa,
1979 sizeof(dstsa)));
1980 }
1981 if (timing)
1982 (void)printf(" time=%.3f ms", triptime);
1983 if (dupflag) {
1984 if (!IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
1985 (void)printf("(DUP!)");
1986 }
1987 if (rcvtclass)
1988 (void)printf(" tclass=%d", tclass);
1989 if (sotc != -1)
1990 (void)printf(" sotc=%d", sotc);
1991 /* check the data */
1992 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1993 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1994 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1995 if (*cp != *dp) {
1996 (void)printf("\nwrong data byte #%d "
1997 "should be 0x%x but was 0x%x",
1998 i, *dp, *cp);
1999 break;
2000 }
2001 }
2002 }
2003 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
2004 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce);
2005 ++nreceived;
2006 if (TST(seq % mx_dup_ck)) {
2007 ++nrepeats;
2008 --nreceived;
2009 } else {
2010 SET(seq % mx_dup_ck);
2011 }
2012
2013 if (options & F_QUIET)
2014 return;
2015
2016 if (options & F_PRTIME)
2017 pr_currenttime();
2018 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
2019
2020 switch (ntohs(ni->ni_code)) {
2021 case ICMP6_NI_SUCCESS:
2022 break;
2023 case ICMP6_NI_REFUSED:
2024 printf("refused, type 0x%x", ntohs(ni->ni_type));
2025 goto fqdnend;
2026 case ICMP6_NI_UNKNOWN:
2027 printf("unknown, type 0x%x", ntohs(ni->ni_type));
2028 goto fqdnend;
2029 default:
2030 printf("unknown code 0x%x, type 0x%x",
2031 ntohs(ni->ni_code), ntohs(ni->ni_type));
2032 goto fqdnend;
2033 }
2034
2035 switch (ntohs(ni->ni_qtype)) {
2036 case NI_QTYPE_NOOP:
2037 printf("NodeInfo NOOP");
2038 break;
2039 case NI_QTYPE_SUPTYPES:
2040 pr_suptypes(ni, end - (u_char *)ni);
2041 break;
2042 case NI_QTYPE_NODEADDR:
2043 pr_nodeaddr(ni, end - (u_char *)ni);
2044 break;
2045 case NI_QTYPE_FQDN:
2046 default: /* XXX: for backward compatibility */
2047 cp = (u_char *)ni + ICMP6_NIRLEN;
2048 if (buf[off + ICMP6_NIRLEN] ==
2049 cc - off - ICMP6_NIRLEN - 1)
2050 oldfqdn = 1;
2051 else
2052 oldfqdn = 0;
2053 if (oldfqdn) {
2054 cp++; /* skip length */
2055 while (cp < end) {
2056 safeputc(*cp & 0xff);
2057 cp++;
2058 }
2059 } else {
2060 i = 0;
2061 while (cp < end) {
2062 if (dnsdecode((const u_char **)&cp, end,
2063 (const u_char *)(ni + 1), dnsname,
2064 sizeof(dnsname)) == NULL) {
2065 printf("???");
2066 break;
2067 }
2068 /*
2069 * name-lookup special handling for
2070 * truncated name
2071 */
2072 if (cp + 1 <= end && !*cp &&
2073 strlen(dnsname) > 0) {
2074 dnsname[strlen(dnsname) - 1] = '\0';
2075 cp++;
2076 }
2077 printf("%s%s", i > 0 ? "," : "",
2078 dnsname);
2079 }
2080 }
2081 if (options & F_VERBOSE) {
2082 int32_t ttl;
2083 int comma = 0;
2084
2085 (void)printf(" ("); /*)*/
2086
2087 switch (ni->ni_code) {
2088 case ICMP6_NI_REFUSED:
2089 (void)printf("refused");
2090 comma++;
2091 break;
2092 case ICMP6_NI_UNKNOWN:
2093 (void)printf("unknown qtype");
2094 comma++;
2095 break;
2096 }
2097
2098 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
2099 /* case of refusion, unknown */
2100 /*(*/
2101 putchar(')');
2102 goto fqdnend;
2103 }
2104 ttl = (int32_t)ntohl(*(u_int32_t *)
2105 &buf[off+ICMP6ECHOLEN+8]);
2106 if (comma)
2107 printf(",");
2108 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
2109 (void)printf("TTL=%d:meaningless",
2110 (int)ttl);
2111 } else {
2112 if (ttl < 0) {
2113 (void)printf("TTL=%d:invalid",
2114 ttl);
2115 } else
2116 (void)printf("TTL=%d", ttl);
2117 }
2118 comma++;
2119
2120 if (oldfqdn) {
2121 if (comma)
2122 printf(",");
2123 printf("03 draft");
2124 comma++;
2125 } else {
2126 cp = (u_char *)ni + ICMP6_NIRLEN;
2127 if (cp == end) {
2128 if (comma)
2129 printf(",");
2130 printf("no name");
2131 comma++;
2132 }
2133 }
2134
2135 if (buf[off + ICMP6_NIRLEN] !=
2136 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
2137 if (comma)
2138 printf(",");
2139 (void)printf("invalid namelen:%d/%lu",
2140 buf[off + ICMP6_NIRLEN],
2141 (u_long)cc - off - ICMP6_NIRLEN - 1);
2142 comma++;
2143 }
2144 /*(*/
2145 putchar(')');
2146 }
2147 fqdnend:
2148 ;
2149 }
2150 } else {
2151 /* We've got something other than an ECHOREPLY */
2152 if (!(options & F_VERBOSE))
2153 return;
2154 if (options & F_PRTIME)
2155 pr_currenttime();
2156 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
2157 pr_icmph(icp, end);
2158 }
2159
2160 if (!(options & F_FLOOD)) {
2161 (void)putchar('\n');
2162 if (options & F_VERBOSE)
2163 pr_exthdrs(mhdr);
2164 (void)fflush(stdout);
2165 }
2166 #undef safeputc
2167 }
2168
2169 void
2170 pr_exthdrs(struct msghdr *mhdr)
2171 {
2172 ssize_t bufsize;
2173 void *bufp;
2174 struct cmsghdr *cm;
2175
2176 bufp = mhdr->msg_control;
2177 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2178 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2179 if (cm->cmsg_level != IPPROTO_IPV6)
2180 continue;
2181
2182 bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp);
2183 if (bufsize <= 0)
2184 continue;
2185 switch (cm->cmsg_type) {
2186 case IPV6_HOPOPTS:
2187 printf(" HbH Options: ");
2188 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
2189 break;
2190 case IPV6_DSTOPTS:
2191 #ifdef IPV6_RTHDRDSTOPTS
2192 case IPV6_RTHDRDSTOPTS:
2193 #endif
2194 printf(" Dst Options: ");
2195 pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize);
2196 break;
2197 case IPV6_RTHDR:
2198 printf(" Routing: ");
2199 pr_rthdr(CMSG_DATA(cm), (size_t)bufsize);
2200 break;
2201 }
2202 }
2203 }
2204
2205 #ifdef USE_RFC2292BIS
2206 void
2207 pr_ip6opt(void *extbuf, size_t bufsize)
2208 {
2209 struct ip6_hbh *ext;
2210 int currentlen;
2211 u_int8_t type;
2212 socklen_t extlen, len;
2213 void *databuf;
2214 size_t offset;
2215 u_int16_t value2;
2216 u_int32_t value4;
2217
2218 ext = (struct ip6_hbh *)extbuf;
2219 extlen = (ext->ip6h_len + 1) * 8;
2220 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
2221 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
2222
2223 /*
2224 * Bounds checking on the ancillary data buffer:
2225 * subtract the size of a cmsg structure from the buffer size.
2226 */
2227 if (bufsize < (extlen + CMSG_SPACE(0))) {
2228 extlen = bufsize - CMSG_SPACE(0);
2229 warnx("options truncated, showing only %u (total=%u)",
2230 (unsigned int)(extlen / 8 - 1),
2231 (unsigned int)(ext->ip6h_len));
2232 }
2233
2234 currentlen = 0;
2235 while (1) {
2236 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
2237 &type, &len, &databuf);
2238 if (currentlen == -1)
2239 break;
2240 switch (type) {
2241 /*
2242 * Note that inet6_opt_next automatically skips any padding
2243 * optins.
2244 */
2245 case IP6OPT_JUMBO:
2246 offset = 0;
2247 (void) inet6_opt_get_val(databuf, offset,
2248 &value4, sizeof(value4));
2249 printf(" Jumbo Payload Opt: Length %u\n",
2250 (u_int32_t)ntohl(value4));
2251 break;
2252 case IP6OPT_ROUTER_ALERT:
2253 offset = 0;
2254 (void)inet6_opt_get_val(databuf, offset,
2255 &value2, sizeof(value2));
2256 printf(" Router Alert Opt: Type %u\n",
2257 ntohs(value2));
2258 break;
2259 default:
2260 printf(" Received Opt %u len %lu\n",
2261 type, (unsigned long)len);
2262 break;
2263 }
2264 }
2265 return;
2266 }
2267 #else /* !USE_RFC2292BIS */
2268 /* ARGSUSED */
2269 void
2270 pr_ip6opt(void *extbuf, size_t bufsize __unused)
2271 {
2272 putchar('\n');
2273 return;
2274 }
2275 #endif /* USE_RFC2292BIS */
2276
2277 #ifdef USE_RFC2292BIS
2278 void
2279 pr_rthdr(void *extbuf, size_t bufsize)
2280 {
2281 struct in6_addr *in6;
2282 char ntopbuf[INET6_ADDRSTRLEN];
2283 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
2284 int i, segments, origsegs, rthsize, size0, size1;
2285
2286 /* print fixed part of the header */
2287 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
2288 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
2289 if ((segments = inet6_rth_segments(extbuf)) >= 0) {
2290 printf("%d segments, ", segments);
2291 printf("%d left\n", rh->ip6r_segleft);
2292 } else {
2293 printf("segments unknown, ");
2294 printf("%d left\n", rh->ip6r_segleft);
2295 return;
2296 }
2297
2298 /*
2299 * Bounds checking on the ancillary data buffer. When calculating
2300 * the number of items to show keep in mind:
2301 * - The size of the cmsg structure
2302 * - The size of one segment (the size of a Type 0 routing header)
2303 * - When dividing add a fudge factor of one in case the
2304 * dividend is not evenly divisible by the divisor
2305 */
2306 rthsize = (rh->ip6r_len + 1) * 8;
2307 if (bufsize < (rthsize + CMSG_SPACE(0))) {
2308 origsegs = segments;
2309 size0 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 0);
2310 size1 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 1);
2311 segments -= (rthsize - (bufsize - CMSG_SPACE(0))) /
2312 (size1 - size0) + 1;
2313 warnx("segments truncated, showing only %d (total=%d)",
2314 segments, origsegs);
2315 }
2316
2317 for (i = 0; i < segments; i++) {
2318 in6 = inet6_rth_getaddr(extbuf, i);
2319 if (in6 == NULL)
2320 printf(" [%d]<NULL>\n", i);
2321 else {
2322 if (!inet_ntop(AF_INET6, in6, ntopbuf,
2323 sizeof(ntopbuf)))
2324 strlcpy(ntopbuf, "?", sizeof(ntopbuf));
2325 printf(" [%d]%s\n", i, ntopbuf);
2326 }
2327 }
2328
2329 return;
2330
2331 }
2332
2333 #else /* !USE_RFC2292BIS */
2334 /* ARGSUSED */
2335 void
2336 pr_rthdr(void *extbuf, size_t bufsize __unused)
2337 {
2338 putchar('\n');
2339 return;
2340 }
2341 #endif /* USE_RFC2292BIS */
2342
2343 int
2344 pr_bitrange(u_int32_t v, int soff, int ii)
2345 {
2346 int off;
2347 int i;
2348
2349 off = 0;
2350 while (off < 32) {
2351 /* shift till we have 0x01 */
2352 if ((v & 0x01) == 0) {
2353 if (ii > 1)
2354 printf("-%u", soff + off - 1);
2355 ii = 0;
2356 switch (v & 0x0f) {
2357 case 0x00:
2358 v >>= 4;
2359 off += 4;
2360 continue;
2361 case 0x08:
2362 v >>= 3;
2363 off += 3;
2364 continue;
2365 case 0x04: case 0x0c:
2366 v >>= 2;
2367 off += 2;
2368 continue;
2369 default:
2370 v >>= 1;
2371 off += 1;
2372 continue;
2373 }
2374 }
2375
2376 /* we have 0x01 with us */
2377 for (i = 0; i < 32 - off; i++) {
2378 if ((v & (0x01 << i)) == 0)
2379 break;
2380 }
2381 if (!ii)
2382 printf(" %u", soff + off);
2383 ii += i;
2384 v >>= i; off += i;
2385 }
2386 return ii;
2387 }
2388
2389 void
2390 pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen)
2391 /* ni->qtype must be SUPTYPES */
2392 {
2393 size_t clen;
2394 u_int32_t v;
2395 const u_char *cp, *end;
2396 u_int16_t cur;
2397 struct cbit {
2398 u_int16_t words; /*32bit count*/
2399 u_int16_t skip;
2400 } cbit = { 0, 0 };
2401 #define MAXQTYPES (1 << 16)
2402 size_t off;
2403 int b;
2404
2405 cp = (u_char *)(ni + 1);
2406 end = ((u_char *)ni) + nilen;
2407 cur = 0;
2408 b = 0;
2409
2410 printf("NodeInfo Supported Qtypes");
2411 if (options & F_VERBOSE) {
2412 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
2413 printf(", compressed bitmap");
2414 else
2415 printf(", raw bitmap");
2416 }
2417
2418 while (cp < end) {
2419 clen = (size_t)(end - cp);
2420 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
2421 if (clen == 0 || clen > MAXQTYPES / 8 ||
2422 clen % sizeof(v)) {
2423 printf("???");
2424 return;
2425 }
2426 } else {
2427 if (clen < sizeof(cbit) || clen % sizeof(v))
2428 return;
2429 memcpy(&cbit, cp, sizeof(cbit));
2430 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
2431 clen)
2432 return;
2433 cp += sizeof(cbit);
2434 clen = ntohs(cbit.words) * sizeof(v);
2435 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
2436 MAXQTYPES)
2437 return;
2438 }
2439
2440 for (off = 0; off < clen; off += sizeof(v)) {
2441 memcpy(&v, cp + off, sizeof(v));
2442 v = (u_int32_t)ntohl(v);
2443 b = pr_bitrange(v, (int)(cur + off * 8), b);
2444 }
2445 /* flush the remaining bits */
2446 b = pr_bitrange(0, (int)(cur + off * 8), b);
2447
2448 cp += clen;
2449 cur += clen * 8;
2450 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
2451 cur += ntohs(cbit.skip) * 32;
2452 }
2453 }
2454
2455 void
2456 pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen)
2457 /* ni->qtype must be NODEADDR */
2458 {
2459 u_char *cp = (u_char *)(ni + 1);
2460 char ntop_buf[INET6_ADDRSTRLEN];
2461 int withttl = 0;
2462
2463 nilen -= sizeof(struct icmp6_nodeinfo);
2464
2465 if (options & F_VERBOSE) {
2466 switch (ni->ni_code) {
2467 case ICMP6_NI_REFUSED:
2468 (void)printf("refused");
2469 break;
2470 case ICMP6_NI_UNKNOWN:
2471 (void)printf("unknown qtype");
2472 break;
2473 }
2474 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
2475 (void)printf(" truncated");
2476 }
2477 putchar('\n');
2478 if (nilen <= 0)
2479 printf(" no address\n");
2480
2481 /*
2482 * In icmp-name-lookups 05 and later, TTL of each returned address
2483 * is contained in the resposne. We try to detect the version
2484 * by the length of the data, but note that the detection algorithm
2485 * is incomplete. We assume the latest draft by default.
2486 */
2487 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
2488 withttl = 1;
2489 while (nilen > 0) {
2490 u_int32_t ttl = 0;
2491
2492 if (withttl) {
2493 /* XXX: alignment? */
2494 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp);
2495 cp += sizeof(u_int32_t);
2496 nilen -= sizeof(u_int32_t);
2497 }
2498
2499 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
2500 NULL)
2501 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2502 printf(" %s", ntop_buf);
2503 if (withttl) {
2504 if (ttl == 0xffffffff) {
2505 /*
2506 * XXX: can this convention be applied to all
2507 * type of TTL (i.e. non-ND TTL)?
2508 */
2509 printf("(TTL=infty)");
2510 }
2511 else
2512 printf("(TTL=%u)", ttl);
2513 }
2514 putchar('\n');
2515
2516 nilen -= sizeof(struct in6_addr);
2517 cp += sizeof(struct in6_addr);
2518 }
2519 }
2520
2521 int
2522 get_hoplim(struct msghdr *mhdr)
2523 {
2524 struct cmsghdr *cm;
2525
2526 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2527 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2528 if (cm->cmsg_len == 0)
2529 return(-1);
2530
2531 if (cm->cmsg_level == IPPROTO_IPV6 &&
2532 cm->cmsg_type == IPV6_HOPLIMIT &&
2533 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2534 return(*(int *)CMSG_DATA(cm));
2535 }
2536
2537 return(-1);
2538 }
2539
2540 struct in6_pktinfo *
2541 get_rcvpktinfo(struct msghdr *mhdr)
2542 {
2543 struct cmsghdr *cm;
2544
2545 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2546 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2547 if (cm->cmsg_len == 0)
2548 return(NULL);
2549
2550 if (cm->cmsg_level == IPPROTO_IPV6 &&
2551 cm->cmsg_type == IPV6_PKTINFO &&
2552 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
2553 return((struct in6_pktinfo *)CMSG_DATA(cm));
2554 }
2555
2556 return(NULL);
2557 }
2558
2559 int
2560 get_pathmtu(struct msghdr *mhdr)
2561 {
2562 #ifdef IPV6_RECVPATHMTU
2563 struct cmsghdr *cm;
2564 struct ip6_mtuinfo *mtuctl = NULL;
2565
2566 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2567 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2568 if (cm->cmsg_len == 0)
2569 return(0);
2570
2571 if (cm->cmsg_level == IPPROTO_IPV6 &&
2572 cm->cmsg_type == IPV6_PATHMTU &&
2573 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2574 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm);
2575
2576 /*
2577 * If the notified destination is different from
2578 * the one we are pinging, just ignore the info.
2579 * We check the scope ID only when both notified value
2580 * and our own value have non-0 values, because we may
2581 * have used the default scope zone ID for sending,
2582 * in which case the scope ID value is 0.
2583 */
2584 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr,
2585 &dst.sin6_addr) ||
2586 (mtuctl->ip6m_addr.sin6_scope_id &&
2587 dst.sin6_scope_id &&
2588 mtuctl->ip6m_addr.sin6_scope_id !=
2589 dst.sin6_scope_id)) {
2590 if ((options & F_VERBOSE) != 0) {
2591 printf("path MTU for %s is notified. "
2592 "(ignored)\n",
2593 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr,
2594 sizeof(mtuctl->ip6m_addr)));
2595 }
2596 return(0);
2597 }
2598
2599 /*
2600 * Ignore an invalid MTU. XXX: can we just believe
2601 * the kernel check?
2602 */
2603 if (mtuctl->ip6m_mtu < IPV6_MMTU)
2604 return(0);
2605
2606 /* notification for our destination. return the MTU. */
2607 return((int)mtuctl->ip6m_mtu);
2608 }
2609 }
2610 #endif
2611 return(0);
2612 }
2613
2614 int
2615 get_tclass(mhdr)
2616 struct msghdr *mhdr;
2617 {
2618 struct cmsghdr *cm;
2619
2620 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2621 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2622 if (cm->cmsg_len == 0)
2623 return(-1);
2624
2625 if (cm->cmsg_level == IPPROTO_IPV6 &&
2626 cm->cmsg_type == IPV6_TCLASS &&
2627 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2628 return(*(int *)CMSG_DATA(cm));
2629 }
2630
2631 return(-1);
2632 }
2633
2634 int
2635 get_so_traffic_class(struct msghdr *mhdr)
2636 {
2637 struct cmsghdr *cm;
2638
2639 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2640 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2641 if (cm->cmsg_len == 0)
2642 return(-1);
2643
2644 if (cm->cmsg_level == SOL_SOCKET &&
2645 cm->cmsg_type == SO_TRAFFIC_CLASS &&
2646 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2647 return(*(int *)CMSG_DATA(cm));
2648 }
2649
2650 return(-1);
2651 }
2652
2653 /*
2654 * tvsub --
2655 * Subtract 2 timeval structs: out = out - in. Out is assumed to
2656 * be >= in.
2657 */
2658 void
2659 tvsub(struct timeval *out, struct timeval *in)
2660 {
2661 if ((out->tv_usec -= in->tv_usec) < 0) {
2662 --out->tv_sec;
2663 out->tv_usec += 1000000;
2664 }
2665 out->tv_sec -= in->tv_sec;
2666 }
2667
2668 /*
2669 * onint --
2670 * SIGINT handler.
2671 */
2672 /* ARGSUSED */
2673 void
2674 onint(int notused __unused)
2675 {
2676 summary();
2677
2678 if (res != NULL)
2679 freeaddrinfo(res);
2680
2681 if (packet != NULL)
2682 free(packet);
2683
2684 if (cm != NULL)
2685 free(cm);
2686
2687 if (scmsg != NULL)
2688 free(scmsg);
2689
2690 #ifndef HAVE_POLL_H
2691 if (fdmaskp != NULL)
2692 free(fdmaskp);
2693 #endif
2694
2695 (void)signal(SIGINT, SIG_DFL);
2696 (void)kill(getpid(), SIGINT);
2697
2698 /* NOTREACHED */
2699 exit(1);
2700 }
2701
2702 /*
2703 * summary --
2704 * Print out statistics.
2705 */
2706 void
2707 summary(void)
2708 {
2709 (void)printf("\n--- %s ping6 statistics ---\n", hostname);
2710 (void)printf("%ld packets transmitted, ", ntransmitted);
2711 (void)printf("%ld packets received, ", nreceived);
2712 if (nrepeats)
2713 (void)printf("+%ld duplicates, ", nrepeats);
2714 if (ntransmitted) {
2715 if (nreceived > ntransmitted)
2716 (void)printf("-- somebody's duplicating packets!");
2717 else
2718 (void)printf("%.1f%% packet loss",
2719 ((((double)ntransmitted - nreceived) * 100.0) /
2720 ntransmitted));
2721 }
2722 (void)putchar('\n');
2723 if (nreceived && timing) {
2724 /* Only display average to microseconds */
2725 double num = nreceived + nrepeats;
2726 double avg = tsum / num;
2727 double dev = sqrt(tsumsq / num - avg * avg);
2728 (void)printf(
2729 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2730 tmin, avg, tmax, dev);
2731 (void)fflush(stdout);
2732 }
2733 (void)fflush(stdout);
2734 }
2735
2736 /*subject type*/
2737 static const char *niqcode[] = {
2738 "IPv6 address",
2739 "DNS label", /*or empty*/
2740 "IPv4 address",
2741 };
2742
2743 /*result code*/
2744 static const char *nircode[] = {
2745 "Success", "Refused", "Unknown",
2746 };
2747
2748
2749 /*
2750 * pr_icmph --
2751 * Print a descriptive string about an ICMP header.
2752 */
2753 void
2754 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2755 {
2756 char ntop_buf[INET6_ADDRSTRLEN];
2757 struct nd_redirect *red;
2758 struct icmp6_nodeinfo *ni;
2759 char dnsname[NS_MAXDNAME + 1];
2760 const u_char *cp;
2761 size_t l;
2762
2763 switch (icp->icmp6_type) {
2764 case ICMP6_DST_UNREACH:
2765 switch (icp->icmp6_code) {
2766 case ICMP6_DST_UNREACH_NOROUTE:
2767 (void)printf("No Route to Destination\n");
2768 break;
2769 case ICMP6_DST_UNREACH_ADMIN:
2770 (void)printf("Destination Administratively "
2771 "Unreachable\n");
2772 break;
2773 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2774 (void)printf("Destination Unreachable Beyond Scope\n");
2775 break;
2776 case ICMP6_DST_UNREACH_ADDR:
2777 (void)printf("Destination Host Unreachable\n");
2778 break;
2779 case ICMP6_DST_UNREACH_NOPORT:
2780 (void)printf("Destination Port Unreachable\n");
2781 break;
2782 default:
2783 (void)printf("Destination Unreachable, Bad Code: %d\n",
2784 icp->icmp6_code);
2785 break;
2786 }
2787 /* Print returned IP header information */
2788 pr_retip((struct ip6_hdr *)(icp + 1), end);
2789 break;
2790 case ICMP6_PACKET_TOO_BIG:
2791 (void)printf("Packet too big mtu = %d\n",
2792 (int)ntohl(icp->icmp6_mtu));
2793 pr_retip((struct ip6_hdr *)(icp + 1), end);
2794 break;
2795 case ICMP6_TIME_EXCEEDED:
2796 switch (icp->icmp6_code) {
2797 case ICMP6_TIME_EXCEED_TRANSIT:
2798 (void)printf("Time to live exceeded\n");
2799 break;
2800 case ICMP6_TIME_EXCEED_REASSEMBLY:
2801 (void)printf("Frag reassembly time exceeded\n");
2802 break;
2803 default:
2804 (void)printf("Time exceeded, Bad Code: %d\n",
2805 icp->icmp6_code);
2806 break;
2807 }
2808 pr_retip((struct ip6_hdr *)(icp + 1), end);
2809 break;
2810 case ICMP6_PARAM_PROB:
2811 (void)printf("Parameter problem: ");
2812 switch (icp->icmp6_code) {
2813 case ICMP6_PARAMPROB_HEADER:
2814 (void)printf("Erroneous Header ");
2815 break;
2816 case ICMP6_PARAMPROB_NEXTHEADER:
2817 (void)printf("Unknown Nextheader ");
2818 break;
2819 case ICMP6_PARAMPROB_OPTION:
2820 (void)printf("Unrecognized Option ");
2821 break;
2822 default:
2823 (void)printf("Bad code(%d) ", icp->icmp6_code);
2824 break;
2825 }
2826 (void)printf("pointer = 0x%02x\n",
2827 (u_int32_t)ntohl(icp->icmp6_pptr));
2828 pr_retip((struct ip6_hdr *)(icp + 1), end);
2829 break;
2830 case ICMP6_ECHO_REQUEST:
2831 (void)printf("Echo Request");
2832 /* XXX ID + Seq + Data */
2833 break;
2834 case ICMP6_ECHO_REPLY:
2835 (void)printf("Echo Reply");
2836 /* XXX ID + Seq + Data */
2837 break;
2838 case ICMP6_MEMBERSHIP_QUERY:
2839 (void)printf("Listener Query");
2840 break;
2841 case ICMP6_MEMBERSHIP_REPORT:
2842 (void)printf("Listener Report");
2843 break;
2844 case ICMP6_MEMBERSHIP_REDUCTION:
2845 (void)printf("Listener Done");
2846 break;
2847 case ND_ROUTER_SOLICIT:
2848 (void)printf("Router Solicitation");
2849 break;
2850 case ND_ROUTER_ADVERT:
2851 (void)printf("Router Advertisement");
2852 break;
2853 case ND_NEIGHBOR_SOLICIT:
2854 (void)printf("Neighbor Solicitation");
2855 break;
2856 case ND_NEIGHBOR_ADVERT:
2857 (void)printf("Neighbor Advertisement");
2858 break;
2859 case ND_REDIRECT:
2860 red = (struct nd_redirect *)icp;
2861 (void)printf("Redirect\n");
2862 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2863 sizeof(ntop_buf)))
2864 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2865 (void)printf("Destination: %s", ntop_buf);
2866 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2867 sizeof(ntop_buf)))
2868 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2869 (void)printf(" New Target: %s", ntop_buf);
2870 break;
2871 case ICMP6_NI_QUERY:
2872 (void)printf("Node Information Query");
2873 /* XXX ID + Seq + Data */
2874 ni = (struct icmp6_nodeinfo *)icp;
2875 l = end - (u_char *)(ni + 1);
2876 printf(", ");
2877 switch (ntohs(ni->ni_qtype)) {
2878 case NI_QTYPE_NOOP:
2879 (void)printf("NOOP");
2880 break;
2881 case NI_QTYPE_SUPTYPES:
2882 (void)printf("Supported qtypes");
2883 break;
2884 case NI_QTYPE_FQDN:
2885 (void)printf("DNS name");
2886 break;
2887 case NI_QTYPE_NODEADDR:
2888 (void)printf("nodeaddr");
2889 break;
2890 case NI_QTYPE_IPV4ADDR:
2891 (void)printf("IPv4 nodeaddr");
2892 break;
2893 default:
2894 (void)printf("unknown qtype");
2895 break;
2896 }
2897 if (options & F_VERBOSE) {
2898 switch (ni->ni_code) {
2899 case ICMP6_NI_SUBJ_IPV6:
2900 if (l == sizeof(struct in6_addr) &&
2901 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2902 sizeof(ntop_buf)) != NULL) {
2903 (void)printf(", subject=%s(%s)",
2904 niqcode[ni->ni_code], ntop_buf);
2905 } else {
2906 #if 1
2907 /* backward compat to -W */
2908 (void)printf(", oldfqdn");
2909 #else
2910 (void)printf(", invalid");
2911 #endif
2912 }
2913 break;
2914 case ICMP6_NI_SUBJ_FQDN:
2915 if (end == (u_char *)(ni + 1)) {
2916 (void)printf(", no subject");
2917 break;
2918 }
2919 printf(", subject=%s", niqcode[ni->ni_code]);
2920 cp = (const u_char *)(ni + 1);
2921 if (dnsdecode(&cp, end, NULL, dnsname,
2922 sizeof(dnsname)) != NULL)
2923 printf("(%s)", dnsname);
2924 else
2925 printf("(invalid)");
2926 break;
2927 case ICMP6_NI_SUBJ_IPV4:
2928 if (l == sizeof(struct in_addr) &&
2929 inet_ntop(AF_INET, ni + 1, ntop_buf,
2930 sizeof(ntop_buf)) != NULL) {
2931 (void)printf(", subject=%s(%s)",
2932 niqcode[ni->ni_code], ntop_buf);
2933 } else
2934 (void)printf(", invalid");
2935 break;
2936 default:
2937 (void)printf(", invalid");
2938 break;
2939 }
2940 }
2941 break;
2942 case ICMP6_NI_REPLY:
2943 (void)printf("Node Information Reply");
2944 /* XXX ID + Seq + Data */
2945 ni = (struct icmp6_nodeinfo *)icp;
2946 printf(", ");
2947 switch (ntohs(ni->ni_qtype)) {
2948 case NI_QTYPE_NOOP:
2949 (void)printf("NOOP");
2950 break;
2951 case NI_QTYPE_SUPTYPES:
2952 (void)printf("Supported qtypes");
2953 break;
2954 case NI_QTYPE_FQDN:
2955 (void)printf("DNS name");
2956 break;
2957 case NI_QTYPE_NODEADDR:
2958 (void)printf("nodeaddr");
2959 break;
2960 case NI_QTYPE_IPV4ADDR:
2961 (void)printf("IPv4 nodeaddr");
2962 break;
2963 default:
2964 (void)printf("unknown qtype");
2965 break;
2966 }
2967 if (options & F_VERBOSE) {
2968 if (ni->ni_code > sizeof(nircode) / sizeof(nircode[0]))
2969 printf(", invalid");
2970 else
2971 printf(", %s", nircode[ni->ni_code]);
2972 }
2973 break;
2974 default:
2975 (void)printf("Bad ICMP type: %d", icp->icmp6_type);
2976 }
2977 }
2978
2979 /*
2980 * pr_iph --
2981 * Print an IP6 header.
2982 */
2983 void
2984 pr_iph(struct ip6_hdr *ip6)
2985 {
2986 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2987 u_int8_t tc;
2988 char ntop_buf[INET6_ADDRSTRLEN];
2989
2990 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2991 tc = (tc >> 4) & 0x0f;
2992 tc |= (ip6->ip6_vfc << 4);
2993
2994 printf("Vr TC Flow Plen Nxt Hlim\n");
2995 printf(" %1x %02x %05x %04x %02x %02x\n",
2996 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2997 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2998 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2999 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
3000 printf("%s->", ntop_buf);
3001 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
3002 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
3003 printf("%s\n", ntop_buf);
3004 }
3005
3006 /*
3007 * pr_addr --
3008 * Return an ascii host address as a dotted quad and optionally with
3009 * a hostname.
3010 */
3011 const char *
3012 pr_addr(struct sockaddr *addr, int addrlen)
3013 {
3014 static char buf[NI_MAXHOST];
3015 int flag = 0;
3016
3017 if ((options & F_HOSTNAME) == 0)
3018 flag |= NI_NUMERICHOST;
3019
3020 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0)
3021 return (buf);
3022 else
3023 return "?";
3024 }
3025
3026 /*
3027 * pr_retip --
3028 * Dump some info on a returned (via ICMPv6) IPv6 packet.
3029 */
3030 void
3031 pr_retip(struct ip6_hdr *ip6, u_char *end)
3032 {
3033 u_char *cp = (u_char *)ip6, nh;
3034 int hlen;
3035
3036 if (end - (u_char *)ip6 < sizeof(*ip6)) {
3037 printf("IP6");
3038 goto trunc;
3039 }
3040 pr_iph(ip6);
3041 hlen = sizeof(*ip6);
3042
3043 nh = ip6->ip6_nxt;
3044 cp += hlen;
3045 while (end - cp >= 8) {
3046 switch (nh) {
3047 case IPPROTO_HOPOPTS:
3048 printf("HBH ");
3049 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
3050 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
3051 break;
3052 case IPPROTO_DSTOPTS:
3053 printf("DSTOPT ");
3054 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
3055 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
3056 break;
3057 case IPPROTO_FRAGMENT:
3058 printf("FRAG ");
3059 hlen = sizeof(struct ip6_frag);
3060 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
3061 break;
3062 case IPPROTO_ROUTING:
3063 printf("RTHDR ");
3064 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
3065 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
3066 break;
3067 #ifdef IPSEC
3068 case IPPROTO_AH:
3069 printf("AH ");
3070 hlen = (((struct ah *)cp)->ah_len+2) << 2;
3071 nh = ((struct ah *)cp)->ah_nxt;
3072 break;
3073 #endif
3074 case IPPROTO_ICMPV6:
3075 printf("ICMP6: type = %d, code = %d\n",
3076 *cp, *(cp + 1));
3077 return;
3078 case IPPROTO_ESP:
3079 printf("ESP\n");
3080 return;
3081 case IPPROTO_TCP:
3082 printf("TCP: from port %u, to port %u (decimal)\n",
3083 (*cp * 256 + *(cp + 1)),
3084 (*(cp + 2) * 256 + *(cp + 3)));
3085 return;
3086 case IPPROTO_UDP:
3087 printf("UDP: from port %u, to port %u (decimal)\n",
3088 (*cp * 256 + *(cp + 1)),
3089 (*(cp + 2) * 256 + *(cp + 3)));
3090 return;
3091 default:
3092 printf("Unknown Header(%d)\n", nh);
3093 return;
3094 }
3095
3096 if ((cp += hlen) >= end)
3097 goto trunc;
3098 }
3099 if (end - cp < 8)
3100 goto trunc;
3101
3102 putchar('\n');
3103 return;
3104
3105 trunc:
3106 printf("...\n");
3107 return;
3108 }
3109
3110 void
3111 fill(char *bp, char *patp)
3112 {
3113 int ii, jj, kk;
3114 int pat[16];
3115 char *cp;
3116
3117 for (cp = patp; *cp; cp++)
3118 if (!isxdigit(*cp))
3119 errx(1, "patterns must be specified as hex digits");
3120 ii = sscanf(patp,
3121 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
3122 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
3123 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
3124 &pat[13], &pat[14], &pat[15]);
3125
3126 /* xxx */
3127 if (ii > 0)
3128 for (kk = 0;
3129 kk <= MAXDATALEN - (8 + sizeof(struct tv32) + ii);
3130 kk += ii)
3131 for (jj = 0; jj < ii; ++jj)
3132 bp[jj + kk] = pat[jj];
3133 if (!(options & F_QUIET)) {
3134 (void)printf("PATTERN: 0x");
3135 for (jj = 0; jj < ii; ++jj)
3136 (void)printf("%02x", bp[jj] & 0xFF);
3137 (void)printf("\n");
3138 }
3139 }
3140
3141 #ifdef IPSEC
3142 #ifdef IPSEC_POLICY_IPSEC
3143 int
3144 setpolicy(int so __unused, char *policy)
3145 {
3146 char *buf;
3147
3148 if (policy == NULL)
3149 return 0; /* ignore */
3150
3151 buf = ipsec_set_policy(policy, strlen(policy));
3152 if (buf == NULL)
3153 errx(1, "%s", ipsec_strerror());
3154 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
3155 ipsec_get_policylen(buf)) < 0)
3156 warnx("Unable to set IPsec policy");
3157 free(buf);
3158
3159 return 0;
3160 }
3161 #endif
3162 #endif
3163
3164 char *
3165 nigroup(char *name)
3166 {
3167 char *p;
3168 char *q;
3169 MD5_CTX ctxt;
3170 u_int8_t digest[16];
3171 u_int8_t c;
3172 size_t l;
3173 char hbuf[NI_MAXHOST];
3174 struct in6_addr in6;
3175
3176 p = strchr(name, '.');
3177 if (!p)
3178 p = name + strlen(name);
3179 l = p - name;
3180 if (l > 63 || l > sizeof(hbuf) - 1)
3181 return NULL; /*label too long*/
3182 strncpy(hbuf, name, l);
3183 hbuf[(int)l] = '\0';
3184
3185 for (q = name; *q; q++) {
3186 if (isupper(*(unsigned char *)q))
3187 *q = tolower(*(unsigned char *)q);
3188 }
3189
3190 /* generate 8 bytes of pseudo-random value. */
3191 memset(&ctxt, 0, sizeof(ctxt));
3192 MD5Init(&ctxt);
3193 c = l & 0xff;
3194 MD5Update(&ctxt, &c, sizeof(c));
3195 MD5Update(&ctxt, (unsigned char *)name, l);
3196 MD5Final(digest, &ctxt);
3197
3198 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
3199 return NULL; /*XXX*/
3200 bcopy(digest, &in6.s6_addr[12], 4);
3201
3202 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
3203 return NULL;
3204
3205 return strdup(hbuf);
3206 }
3207
3208 int
3209 str2sotc(const char *str, bool *valid)
3210 {
3211 int sotc = -1;
3212 char *endptr;
3213
3214 *valid = true;
3215
3216 if (str == NULL || *str == '\0')
3217 *valid = false;
3218 else if (strcasecmp(str, "BK_SYS") == 0)
3219 return SO_TC_BK_SYS;
3220 else if (strcasecmp(str, "BK") == 0)
3221 return SO_TC_BK;
3222 else if (strcasecmp(str, "BE") == 0)
3223 return SO_TC_BE;
3224 else if (strcasecmp(str, "RD") == 0)
3225 return SO_TC_RD;
3226 else if (strcasecmp(str, "OAM") == 0)
3227 return SO_TC_OAM;
3228 else if (strcasecmp(str, "AV") == 0)
3229 return SO_TC_AV;
3230 else if (strcasecmp(str, "RV") == 0)
3231 return SO_TC_RV;
3232 else if (strcasecmp(str, "VI") == 0)
3233 return SO_TC_VI;
3234 else if (strcasecmp(str, "VO") == 0)
3235 return SO_TC_VO;
3236 else if (strcasecmp(str, "CTL") == 0)
3237 return SO_TC_CTL;
3238 else {
3239 sotc = (int)strtol(str, &endptr, 0);
3240 if (*endptr != '\0')
3241 *valid = false;
3242 }
3243 return (sotc);
3244 }
3245
3246 int
3247 str2netservicetype(const char *str, bool *valid)
3248 {
3249 int svc = -1;
3250 char *endptr;
3251
3252 *valid = true;
3253
3254 if (str == NULL || *str == '\0')
3255 *valid = false;
3256 else if (strcasecmp(str, "BK") == 0)
3257 return NET_SERVICE_TYPE_BK;
3258 else if (strcasecmp(str, "BE") == 0)
3259 return NET_SERVICE_TYPE_BE;
3260 else if (strcasecmp(str, "VI") == 0)
3261 return NET_SERVICE_TYPE_VI;
3262 else if (strcasecmp(str, "SIG") == 0)
3263 return NET_SERVICE_TYPE_SIG;
3264 else if (strcasecmp(str, "VO") == 0)
3265 return NET_SERVICE_TYPE_VO;
3266 else if (strcasecmp(str, "RV") == 0)
3267 return NET_SERVICE_TYPE_RV;
3268 else if (strcasecmp(str, "AV") == 0)
3269 return NET_SERVICE_TYPE_AV;
3270 else if (strcasecmp(str, "OAM") == 0)
3271 return NET_SERVICE_TYPE_OAM;
3272 else if (strcasecmp(str, "RD") == 0)
3273 return NET_SERVICE_TYPE_RD;
3274 else {
3275 svc = (int)strtol(str, &endptr, 0);
3276 if (*endptr != '\0')
3277 *valid = false;
3278 }
3279 return (svc);
3280 }
3281
3282 u_int8_t
3283 str2tclass(const char *str, bool *valid)
3284 {
3285 u_int8_t dscp = -1;
3286 char *endptr;
3287
3288 *valid = true;
3289
3290 if (str == NULL || *str == '\0')
3291 *valid = false;
3292 else if (strcasecmp(str, "DF") == 0)
3293 dscp = _DSCP_DF;
3294 else if (strcasecmp(str, "EF") == 0)
3295 dscp = _DSCP_EF;
3296 else if (strcasecmp(str, "VA") == 0)
3297 dscp = _DSCP_VA;
3298
3299 else if (strcasecmp(str, "CS0") == 0)
3300 dscp = _DSCP_CS0;
3301 else if (strcasecmp(str, "CS1") == 0)
3302 dscp = _DSCP_CS1;
3303 else if (strcasecmp(str, "CS2") == 0)
3304 dscp = _DSCP_CS2;
3305 else if (strcasecmp(str, "CS3") == 0)
3306 dscp = _DSCP_CS3;
3307 else if (strcasecmp(str, "CS4") == 0)
3308 dscp = _DSCP_CS4;
3309 else if (strcasecmp(str, "CS5") == 0)
3310 dscp = _DSCP_CS5;
3311 else if (strcasecmp(str, "CS6") == 0)
3312 dscp = _DSCP_CS6;
3313 else if (strcasecmp(str, "CS7") == 0)
3314 dscp = _DSCP_CS7;
3315
3316 else if (strcasecmp(str, "AF11") == 0)
3317 dscp = _DSCP_AF11;
3318 else if (strcasecmp(str, "AF12") == 0)
3319 dscp = _DSCP_AF12;
3320 else if (strcasecmp(str, "AF13") == 0)
3321 dscp = _DSCP_AF13;
3322 else if (strcasecmp(str, "AF21") == 0)
3323 dscp = _DSCP_AF21;
3324 else if (strcasecmp(str, "AF22") == 0)
3325 dscp = _DSCP_AF22;
3326 else if (strcasecmp(str, "AF23") == 0)
3327 dscp = _DSCP_AF23;
3328 else if (strcasecmp(str, "AF31") == 0)
3329 dscp = _DSCP_AF31;
3330 else if (strcasecmp(str, "AF32") == 0)
3331 dscp = _DSCP_AF32;
3332 else if (strcasecmp(str, "AF33") == 0)
3333 dscp = _DSCP_AF33;
3334 else if (strcasecmp(str, "AF41") == 0)
3335 dscp = _DSCP_AF41;
3336 else if (strcasecmp(str, "AF42") == 0)
3337 dscp = _DSCP_AF42;
3338 else if (strcasecmp(str, "AF43") == 0)
3339 dscp = _DSCP_AF43;
3340
3341 else {
3342 unsigned long val = strtoul(str, &endptr, 0);
3343 if (*endptr != '\0' || val > 255)
3344 *valid = false;
3345 else
3346 return ((u_int8_t)val);
3347 }
3348 /* DSCP occupies the 6 upper bits of the traffic class field */
3349 return (dscp << 2);
3350 }
3351
3352 void
3353 pr_currenttime(void)
3354 {
3355 int s;
3356 struct timeval tv;
3357
3358 gettimeofday(&tv, NULL);
3359
3360 s = (tv.tv_sec + thiszone) % 86400;
3361 printf("%02d:%02d:%02d.%06u ", s / 3600, (s % 3600) / 60, s % 60,
3362 (u_int32_t)tv.tv_usec);
3363 }
3364
3365 void
3366 usage(void)
3367 {
3368 (void)fprintf(stderr,
3369 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
3370 "A"
3371 #endif
3372 "usage: ping6 [-"
3373 "Dd"
3374 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC)
3375 "E"
3376 #endif
3377 "fH"
3378 #ifdef IPV6_USE_MIN_MTU
3379 "m"
3380 #endif
3381 "nNoqrRtvwW] "
3382 "[-a addrtype] [-b bufsiz] [-c count]\n"
3383 " [-g gateway] [-h hoplimit] [-I interface] [-i wait] [-l preload]"
3384 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
3385 " [-P policy]"
3386 #endif
3387 "\n"
3388 " [-p pattern] [-S sourceaddr] [-s packetsize] [-z tclass] "
3389 "[-k traffic_class] [-K net_service_type] "
3390 "[hops ...] host\n");
3391 (void)fprintf(stderr, "Apple specific options (to be specified before hops or host like all options)\n");
3392 (void)fprintf(stderr, " -b boundif # bind the socket to the interface\n");
3393 (void)fprintf(stderr, " -k traffic_class # set traffic class socket option\n");
3394 (void)fprintf(stderr, " -K net_service_type # set traffic class socket options\n");
3395 (void)fprintf(stderr, " -apple-connect # call connect(2) in the socket\n");
3396 (void)fprintf(stderr, " -apple-time # display current time\n");
3397 (void)fprintf(stderr, " -apple-progress # show progress for debugging\n");
3398 exit(1);
3399 }
mirror of network_cmds