1 /* $NetBSD: ping6.c,v 1.73 2010/09/20 11:49:48 ahoka Exp $ */
2 /* $KAME: ping6.c,v 1.164 2002/11/16 14:05:37 itojun Exp $ */
3
4 /*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */
34
35 /*
36 * Copyright (c) 1989, 1993
37 * The Regents of the University of California. All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Mike Muuss.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. Neither the name of the University nor the names of its contributors
51 * may be used to endorse or promote products derived from this software
52 * without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 */
66
67 #if 0
68 #ifndef lint
69 static char copyright[] =
70 "@(#) Copyright (c) 1989, 1993\n\
71 The Regents of the University of California. All rights reserved.\n";
72 #endif /* not lint */
73
74 #ifndef lint
75 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
76 #endif /* not lint */
77 #else
78 #include <sys/cdefs.h>
79 #ifndef lint
80 __RCSID("$NetBSD: ping6.c,v 1.73 2010/09/20 11:49:48 ahoka Exp $");
81 #endif
82 #endif
83
84 /*
85 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
86 * measure round-trip-delays and packet loss across network paths.
87 *
88 * Author -
89 * Mike Muuss
90 * U. S. Army Ballistic Research Laboratory
91 * December, 1983
92 *
93 * Status -
94 * Public Domain. Distribution Unlimited.
95 * Bugs -
96 * More statistics could always be gathered.
97 * This program has to run SUID to ROOT to access the ICMP socket.
98 */
99 /*
100 * NOTE:
101 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
102 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
103 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
104 * network attached to 1 or more interfaces)
105 */
106
107 #include <sys/param.h>
108 #include <sys/uio.h>
109 #include <sys/socket.h>
110 #include <sys/time.h>
111
112 #include <net/if.h>
113 #include <net/route.h>
114
115 #include <netinet/in.h>
116 #include <netinet/ip6.h>
117 #include <netinet/icmp6.h>
118 #include <arpa/inet.h>
119 #include <arpa/nameser.h>
120 #include <netdb.h>
121
122 #include <ctype.h>
123 #include <err.h>
124 #include <errno.h>
125 #include <fcntl.h>
126 #include <math.h>
127 #include <signal.h>
128 #include <stdio.h>
129 #include <stdlib.h>
130 #include <string.h>
131 #include <unistd.h>
132 #include <poll.h>
133
134 #ifdef IPSEC
135 #include <netinet6/ah.h>
136 #include <netinet6/ipsec.h>
137 #endif
138
139 /*
140 * We currently don't have the libc support required for these two features in
141 * Android. Should we get enough support later, feel free to remove the #ifdefs
142 * altogether.
143 */
144 #undef ANDROID_INCLUDE_MD5_SUPPORT
145 #undef ANDROID_INCLUDE_RTHDR_SUPPORT
146
147 #ifdef ANDROID_INCLUDE_MD5_SUPPORT
148 #include <md5.h>
149 #endif
150
151 struct tv32 {
152 u_int32_t tv32_sec;
153 u_int32_t tv32_usec;
154 };
155
156 #define MAXPACKETLEN 131072
157 #define IP6LEN 40
158 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
159 #define ICMP6ECHOTMLEN sizeof(struct tv32)
160 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
161 /* FQDN case, 64 bits of nonce + 32 bits ttl */
162 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
163 #define EXTRA 256 /* for AH and various other headers. weird. */
164 #define DEFDATALEN ICMP6ECHOTMLEN
165 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
166 #define NROUTES 9 /* number of record route slots */
167
168 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
169 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
170 #define SET(bit) (A(bit) |= B(bit))
171 #define CLR(bit) (A(bit) &= (~B(bit)))
172 #define TST(bit) (A(bit) & B(bit))
173
174 #define F_FLOOD 0x0001
175 #define F_INTERVAL 0x0002
176 #define F_PINGFILLED 0x0008
177 #define F_QUIET 0x0010
178 #define F_RROUTE 0x0020
179 #define F_SO_DEBUG 0x0040
180 #define F_VERBOSE 0x0100
181 #ifdef IPSEC
182 #ifdef IPSEC_POLICY_IPSEC
183 #define F_POLICY 0x0400
184 #else
185 #define F_AUTHHDR 0x0200
186 #define F_ENCRYPT 0x0400
187 #endif /*IPSEC_POLICY_IPSEC*/
188 #endif /*IPSEC*/
189 #define F_NODEADDR 0x0800
190 #define F_FQDN 0x1000
191 #define F_INTERFACE 0x2000
192 #define F_SRCADDR 0x4000
193 #ifdef IPV6_REACHCONF
194 #define F_REACHCONF 0x8000
195 #endif
196 #define F_HOSTNAME 0x10000
197 #define F_FQDNOLD 0x20000
198 #define F_NIGROUP 0x40000
199 #define F_SUPTYPES 0x80000
200 #define F_NOMINMTU 0x100000
201 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
202 u_int options;
203
204 #define IN6LEN sizeof(struct in6_addr)
205 #define SA6LEN sizeof(struct sockaddr_in6)
206 #define DUMMY_PORT 10101
207
208 #define SIN6(s) ((struct sockaddr_in6 *)(s))
209
210 /* Android-specific hacks to get this to compile.*/
211 #define INFTIM -1
212 #define MAXDNAME 1025
213
214 /*
215 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
216 * number of received sequence numbers we can keep track of. Change 128
217 * to 8192 for complete accuracy...
218 */
219 #define MAX_DUP_CHK (8 * 8192)
220 int mx_dup_ck = MAX_DUP_CHK;
221 char rcvd_tbl[MAX_DUP_CHK / 8];
222
223 struct addrinfo *res;
224 struct sockaddr_in6 dst; /* who to ping6 */
225 struct sockaddr_in6 src; /* src addr of this packet */
226 socklen_t srclen;
227 int datalen = DEFDATALEN;
228 int s; /* socket file descriptor */
229 u_char outpack[MAXPACKETLEN];
230 char BSPACE = '\b'; /* characters written for flood */
231 char DOT = '.';
232 char *hostname;
233 int ident; /* process id to identify our packets */
234 u_int8_t nonce[8]; /* nonce field for node information */
235 int hoplimit = -1; /* hoplimit */
236 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
237
238 /* counters */
239 long npackets; /* max packets to transmit */
240 long nreceived; /* # of packets we got back */
241 long nrepeats; /* number of duplicates */
242 long ntransmitted; /* sequence # for outbound packets = #sent */
243 struct timeval interval = {1, 0}; /* interval between packets */
244
245 /* timing */
246 int timing; /* flag to do timing */
247 double tmin = 999999999.0; /* minimum round trip time */
248 double tmax = 0.0; /* maximum round trip time */
249 double tsum = 0.0; /* sum of all times, for doing average */
250 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
251
252 /* for node addresses */
253 u_short naflags;
254
255 /* for ancillary data(advanced API) */
256 struct msghdr smsghdr;
257 struct iovec smsgiov;
258 char *scmsg = 0;
259
260 volatile sig_atomic_t seenalrm;
261 volatile sig_atomic_t seenint;
262 #ifdef SIGINFO
263 volatile sig_atomic_t seeninfo;
264 #endif
265
266 void fill(char *, char *);
267 int get_hoplim(struct msghdr *);
268 int get_pathmtu(struct msghdr *);
269 struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
270 void onsignal(int);
271 void retransmit(void);
272 void onint(int);
273 size_t pingerlen(void);
274 int pinger(void);
275 const char *pr_addr(struct sockaddr *, int);
276 void pr_icmph(struct icmp6_hdr *, u_char *);
277 void pr_iph(struct ip6_hdr *);
278 void pr_suptypes(struct icmp6_nodeinfo *, size_t);
279 void pr_nodeaddr(struct icmp6_nodeinfo *, int);
280 int myechoreply(const struct icmp6_hdr *);
281 int mynireply(const struct icmp6_nodeinfo *);
282 char *dnsdecode(const u_char **, const u_char *, const u_char *,
283 char *, size_t);
284 void pr_pack(u_char *, int, struct msghdr *);
285 void pr_exthdrs(struct msghdr *);
286 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
287 void pr_ip6opt(void *);
288 void pr_rthdr(void *);
289 #endif
290 int pr_bitrange(u_int32_t, int, int);
291 void pr_retip(struct ip6_hdr *, u_char *);
292 void summary(void);
293 void tvsub(struct timeval *, struct timeval *);
294 int setpolicy(int, char *);
295 #ifdef ANDROID_INCLUDE_MD5_SUPPORT
296 char *nigroup(char *);
297 #endif
298 void usage(void);
299
300 int
main(int argc,char * argv[])301 main(int argc, char *argv[])
302 {
303 struct itimerval itimer;
304 struct sockaddr_in6 from;
305 int timeout;
306 struct addrinfo hints;
307 struct pollfd fdmaskp[1];
308 int cc;
309 u_int i, packlen;
310 int ch, hold, preload, optval, ret_ga;
311 u_char *datap, *packet;
312 char *e, *target, *ifname = NULL, *gateway = NULL;
313 int ip6optlen = 0;
314 struct cmsghdr *scmsgp = NULL;
315 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
316 u_long lsockbufsize;
317 int sockbufsize = 0;
318 #endif
319 int usepktinfo = 0;
320 struct in6_pktinfo *pktinfo = NULL;
321 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
322 struct ip6_rthdr *rthdr = NULL;
323 #endif
324 #ifdef IPSEC_POLICY_IPSEC
325 char *policy_in = NULL;
326 char *policy_out = NULL;
327 #endif
328 double intval;
329 size_t rthlen;
330 #ifdef IPV6_USE_MIN_MTU
331 int mflag = 0;
332 #endif
333
334 /* just to be sure */
335 memset(&smsghdr, 0, sizeof(smsghdr));
336 memset(&smsgiov, 0, sizeof(smsgiov));
337
338 preload = 0;
339 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
340 #ifndef IPSEC
341 #define ADDOPTS
342 #else
343 #ifdef IPSEC_POLICY_IPSEC
344 #define ADDOPTS "P:"
345 #else
346 #define ADDOPTS "AE"
347 #endif /*IPSEC_POLICY_IPSEC*/
348 #endif
349
350 #ifdef ANDROID_INCLUDE_MD5_SUPPORT
351 #define ANDROID_MD5_OPTS "N"
352 #else
353 #define ANDROID_MD5_OPTS ""
354 #endif
355 while ((ch = getopt(argc, argv,
356 "a:b:c:dfHg:h:I:i:l:mnp:qRS:s:tvwW" ADDOPTS ANDROID_MD5_OPTS)) != -1) {
357 #undef ADDOPTS
358 switch (ch) {
359 case 'a':
360 {
361 char *cp;
362
363 options &= ~F_NOUSERDATA;
364 options |= F_NODEADDR;
365 for (cp = optarg; *cp != '\0'; cp++) {
366 switch (*cp) {
367 case 'a':
368 naflags |= NI_NODEADDR_FLAG_ALL;
369 break;
370 case 'c':
371 case 'C':
372 naflags |= NI_NODEADDR_FLAG_COMPAT;
373 break;
374 case 'l':
375 case 'L':
376 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
377 break;
378 case 's':
379 case 'S':
380 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
381 break;
382 case 'g':
383 case 'G':
384 naflags |= NI_NODEADDR_FLAG_GLOBAL;
385 break;
386 case 'A': /* experimental. not in the spec */
387 #ifdef NI_NODEADDR_FLAG_ANYCAST
388 naflags |= NI_NODEADDR_FLAG_ANYCAST;
389 break;
390 #else
391 errx(1,
392 "-a A is not supported on the platform");
393 /*NOTREACHED*/
394 #endif
395 default:
396 usage();
397 /*NOTREACHED*/
398 }
399 }
400 break;
401 }
402 case 'b':
403 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
404 errno = 0;
405 e = NULL;
406 lsockbufsize = strtoul(optarg, &e, 10);
407 sockbufsize = lsockbufsize;
408 if (errno || !*optarg || *e ||
409 (u_long)sockbufsize != lsockbufsize)
410 errx(1, "invalid socket buffer size");
411 #else
412 errx(1,
413 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
414 #endif
415 break;
416 case 'c':
417 npackets = strtol(optarg, &e, 10);
418 if (npackets <= 0 || *optarg == '\0' || *e != '\0')
419 errx(1,
420 "illegal number of packets -- %s", optarg);
421 break;
422 case 'd':
423 options |= F_SO_DEBUG;
424 break;
425 case 'f':
426 if (getuid()) {
427 errno = EPERM;
428 errx(1, "Must be superuser to flood ping");
429 }
430 options |= F_FLOOD;
431 setbuf(stdout, (char *)NULL);
432 break;
433 case 'g':
434 gateway = optarg;
435 break;
436 case 'H':
437 options |= F_HOSTNAME;
438 break;
439 case 'h': /* hoplimit */
440 hoplimit = strtol(optarg, &e, 10);
441 if (*optarg == '\0' || *e != '\0')
442 errx(1, "illegal hoplimit %s", optarg);
443 if (255 < hoplimit || hoplimit < -1)
444 errx(1,
445 "illegal hoplimit -- %s", optarg);
446 break;
447 case 'I':
448 ifname = optarg;
449 options |= F_INTERFACE;
450 #ifndef USE_SIN6_SCOPE_ID
451 usepktinfo++;
452 #endif
453 break;
454 case 'i': /* wait between sending packets */
455 intval = strtod(optarg, &e);
456 if (*optarg == '\0' || *e != '\0')
457 errx(1, "illegal timing interval %s", optarg);
458 if (intval < 1 && getuid()) {
459 errx(1, "%s: only root may use interval < 1s",
460 strerror(EPERM));
461 }
462 interval.tv_sec = (long)intval;
463 interval.tv_usec =
464 (long)((intval - interval.tv_sec) * 1000000);
465 if (interval.tv_sec < 0)
466 errx(1, "illegal timing interval %s", optarg);
467 /* less than 1/hz does not make sense */
468 if (interval.tv_sec == 0 && interval.tv_usec < 10000) {
469 warnx("too small interval, raised to 0.01");
470 interval.tv_usec = 10000;
471 }
472 options |= F_INTERVAL;
473 break;
474 case 'l':
475 if (getuid()) {
476 errno = EPERM;
477 errx(1, "Must be superuser to preload");
478 }
479 preload = strtol(optarg, &e, 10);
480 if (preload < 0 || *optarg == '\0' || *e != '\0')
481 errx(1, "illegal preload value -- %s", optarg);
482 break;
483 case 'm':
484 #ifdef IPV6_USE_MIN_MTU
485 mflag++;
486 break;
487 #else
488 errx(1, "-%c is not supported on this platform", ch);
489 /*NOTREACHED*/
490 #endif
491 case 'n':
492 options &= ~F_HOSTNAME;
493 break;
494 #ifdef ANDROID_INCLUDE_MD5_SUPPORT
495 case 'N':
496 options |= F_NIGROUP;
497 break;
498 #endif
499 case 'p': /* fill buffer with user pattern */
500 options |= F_PINGFILLED;
501 fill((char *)datap, optarg);
502 break;
503 case 'q':
504 options |= F_QUIET;
505 break;
506 case 'R':
507 #ifdef IPV6_REACHCONF
508 options |= F_REACHCONF;
509 break;
510 #else
511 errx(1, "-R is not supported in this configuration");
512 #endif
513 case 'S':
514 memset(&hints, 0, sizeof(struct addrinfo));
515 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
516 hints.ai_family = AF_INET6;
517 hints.ai_socktype = SOCK_RAW;
518 hints.ai_protocol = IPPROTO_ICMPV6;
519
520 ret_ga = getaddrinfo(optarg, NULL, &hints, &res);
521 if (ret_ga) {
522 errx(1, "invalid source address: %s",
523 gai_strerror(ret_ga));
524 }
525 /*
526 * res->ai_family must be AF_INET6 and res->ai_addrlen
527 * must be sizeof(src).
528 */
529 memcpy(&src, res->ai_addr, res->ai_addrlen);
530 srclen = res->ai_addrlen;
531 freeaddrinfo(res);
532 options |= F_SRCADDR;
533 break;
534 case 's': /* size of packet to send */
535 datalen = strtol(optarg, &e, 10);
536 if (datalen <= 0 || *optarg == '\0' || *e != '\0')
537 errx(1, "illegal datalen value -- %s", optarg);
538 if (datalen > MAXDATALEN) {
539 errx(1,
540 "datalen value too large, maximum is %d",
541 MAXDATALEN);
542 }
543 break;
544 case 't':
545 options &= ~F_NOUSERDATA;
546 options |= F_SUPTYPES;
547 break;
548 case 'v':
549 options |= F_VERBOSE;
550 break;
551 case 'w':
552 options &= ~F_NOUSERDATA;
553 options |= F_FQDN;
554 break;
555 case 'W':
556 options &= ~F_NOUSERDATA;
557 options |= F_FQDNOLD;
558 break;
559 #ifdef IPSEC
560 #ifdef IPSEC_POLICY_IPSEC
561 case 'P':
562 options |= F_POLICY;
563 if (!strncmp("in", optarg, 2)) {
564 if ((policy_in = strdup(optarg)) == NULL)
565 errx(1, "strdup");
566 } else if (!strncmp("out", optarg, 3)) {
567 if ((policy_out = strdup(optarg)) == NULL)
568 errx(1, "strdup");
569 } else
570 errx(1, "invalid security policy");
571 break;
572 #else
573 case 'A':
574 options |= F_AUTHHDR;
575 break;
576 case 'E':
577 options |= F_ENCRYPT;
578 break;
579 #endif /*IPSEC_POLICY_IPSEC*/
580 #endif /*IPSEC*/
581 default:
582 usage();
583 /*NOTREACHED*/
584 }
585 }
586
587 argc -= optind;
588 argv += optind;
589
590 if (argc < 1) {
591 usage();
592 /*NOTREACHED*/
593 }
594
595 if (argc > 1) {
596 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
597 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
598 argc - 1));
599 if (rthlen == 0) {
600 errx(1, "too many intermediate hops");
601 /*NOTREACHED*/
602 }
603 ip6optlen += rthlen;
604 #else
605 errx(1, "compiled without support for routing headers");
606 #endif
607 }
608
609 #ifdef ANDROID_INCLUDE_MD5_SUPPORT
610 if (options & F_NIGROUP) {
611 target = nigroup(argv[argc - 1]);
612 if (target == NULL) {
613 usage();
614 /*NOTREACHED*/
615 }
616 } else
617 #endif
618 target = argv[argc - 1];
619
620 /* getaddrinfo */
621 memset(&hints, 0, sizeof(struct addrinfo));
622 hints.ai_flags = AI_CANONNAME;
623 hints.ai_family = AF_INET6;
624 hints.ai_socktype = SOCK_RAW;
625 hints.ai_protocol = IPPROTO_ICMPV6;
626
627 ret_ga = getaddrinfo(target, NULL, &hints, &res);
628 if (ret_ga)
629 errx(1, "%s", gai_strerror(ret_ga));
630 if (res->ai_canonname)
631 hostname = res->ai_canonname;
632 else
633 hostname = target;
634
635 if (!res->ai_addr)
636 errx(1, "getaddrinfo failed");
637
638 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
639
640 if ((s = socket(res->ai_family, res->ai_socktype,
641 res->ai_protocol)) < 0)
642 err(1, "socket");
643
644 /* set the source address if specified. */
645 if ((options & F_SRCADDR) &&
646 bind(s, (struct sockaddr *)&src, srclen) != 0) {
647 err(1, "bind");
648 }
649
650 /* set the gateway (next hop) if specified */
651 if (gateway) {
652 struct addrinfo ghints, *gres;
653 int error;
654
655 memset(&ghints, 0, sizeof(ghints));
656 ghints.ai_family = AF_INET6;
657 ghints.ai_socktype = SOCK_RAW;
658 ghints.ai_protocol = IPPROTO_ICMPV6;
659
660 error = getaddrinfo(gateway, NULL, &hints, &gres);
661 if (error) {
662 errx(1, "getaddrinfo for the gateway %s: %s",
663 gateway, gai_strerror(error));
664 }
665 if (gres->ai_next && (options & F_VERBOSE))
666 warnx("gateway resolves to multiple addresses");
667
668 if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP,
669 gres->ai_addr, gres->ai_addrlen)) {
670 err(1, "setsockopt(IPV6_NEXTHOP)");
671 }
672
673 freeaddrinfo(gres);
674 }
675
676 /*
677 * let the kerel pass extension headers of incoming packets,
678 * for privileged socket options
679 */
680 if ((options & F_VERBOSE) != 0) {
681 int opton = 1;
682
683 #ifdef IPV6_RECVHOPOPTS
684 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
685 sizeof(opton)))
686 err(1, "setsockopt(IPV6_RECVHOPOPTS)");
687 #else /* old adv. API */
688 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
689 sizeof(opton)))
690 err(1, "setsockopt(IPV6_HOPOPTS)");
691 #endif
692 #ifdef IPV6_RECVDSTOPTS
693 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
694 sizeof(opton)))
695 err(1, "setsockopt(IPV6_RECVDSTOPTS)");
696 #else /* old adv. API */
697 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
698 sizeof(opton)))
699 err(1, "setsockopt(IPV6_DSTOPTS)");
700 #endif
701 #ifdef IPV6_RECVRTHDRDSTOPTS
702 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
703 sizeof(opton)))
704 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
705 #endif
706 }
707
708 /* revoke root privilege */
709 seteuid(getuid());
710 setuid(getuid());
711
712 if ((options & F_FLOOD) && (options & F_INTERVAL))
713 errx(1, "-f and -i incompatible options");
714
715 if ((options & F_NOUSERDATA) == 0) {
716 if (datalen >= (int)sizeof(struct tv32)) {
717 /* we can time transfer */
718 timing = 1;
719 } else
720 timing = 0;
721 /* in F_VERBOSE case, we may get non-echoreply packets*/
722 if (options & F_VERBOSE)
723 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
724 else
725 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
726 } else {
727 /* suppress timing for node information query */
728 timing = 0;
729 datalen = 2048;
730 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
731 }
732
733 if (!(packet = (u_char *)malloc(packlen)))
734 err(1, "Unable to allocate packet");
735 if (!(options & F_PINGFILLED))
736 for (i = ICMP6ECHOLEN; i < packlen; ++i)
737 *datap++ = i;
738
739 ident = arc4random() & 0xFFFF;
740 memset(nonce, 0, sizeof(nonce));
741 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
742 *((u_int32_t *)&nonce[i]) = arc4random();
743
744 hold = 1;
745
746 if (options & F_SO_DEBUG)
747 (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
748 sizeof(hold));
749 optval = IPV6_DEFHLIM;
750 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
751 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
752 &optval, sizeof(optval)) == -1)
753 err(1, "IPV6_MULTICAST_HOPS");
754 #ifdef IPV6_USE_MIN_MTU
755 if (mflag != 1) {
756 optval = mflag > 1 ? 0 : 1;
757
758 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
759 &optval, sizeof(optval)) == -1)
760 err(1, "setsockopt(IPV6_USE_MIN_MTU)");
761 }
762 #ifdef IPV6_RECVPATHMTU
763 else {
764 optval = 1;
765 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
766 &optval, sizeof(optval)) == -1)
767 err(1, "setsockopt(IPV6_RECVPATHMTU)");
768 }
769 #endif /* IPV6_RECVPATHMTU */
770 #endif /* IPV6_USE_MIN_MTU */
771
772 #ifdef IPSEC
773 #ifdef IPSEC_POLICY_IPSEC
774 if (options & F_POLICY) {
775 if (setpolicy(s, policy_in) < 0)
776 errx(1, "%s", ipsec_strerror());
777 if (setpolicy(s, policy_out) < 0)
778 errx(1, "%s", ipsec_strerror());
779 }
780 #else
781 if (options & F_AUTHHDR) {
782 optval = IPSEC_LEVEL_REQUIRE;
783 #ifdef IPV6_AUTH_TRANS_LEVEL
784 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
785 &optval, sizeof(optval)) == -1)
786 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
787 #else /* old def */
788 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
789 &optval, sizeof(optval)) == -1)
790 err(1, "setsockopt(IPV6_AUTH_LEVEL)");
791 #endif
792 }
793 if (options & F_ENCRYPT) {
794 optval = IPSEC_LEVEL_REQUIRE;
795 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
796 &optval, sizeof(optval)) == -1)
797 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
798 }
799 #endif /*IPSEC_POLICY_IPSEC*/
800 #endif
801
802 #ifdef ICMP6_FILTER
803 {
804 struct icmp6_filter filt;
805 if (!(options & F_VERBOSE)) {
806 ICMP6_FILTER_SETBLOCKALL(&filt);
807 if ((options & F_FQDN) || (options & F_FQDNOLD) ||
808 (options & F_NODEADDR) || (options & F_SUPTYPES))
809 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
810 else
811 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
812 } else {
813 ICMP6_FILTER_SETPASSALL(&filt);
814 }
815 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
816 sizeof(filt)) < 0)
817 err(1, "setsockopt(ICMP6_FILTER)");
818 }
819 #endif /*ICMP6_FILTER*/
820
821 /* let the kerel pass extension headers of incoming packets */
822 if ((options & F_VERBOSE) != 0) {
823 int opton = 1;
824
825 #ifdef IPV6_RECVRTHDR
826 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
827 sizeof(opton)))
828 err(1, "setsockopt(IPV6_RECVRTHDR)");
829 #else /* old adv. API */
830 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
831 sizeof(opton)))
832 err(1, "setsockopt(IPV6_RTHDR)");
833 #endif
834 }
835
836 /*
837 optval = 1;
838 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
839 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
840 &optval, sizeof(optval)) == -1)
841 err(1, "IPV6_MULTICAST_LOOP");
842 */
843
844 /* Specify the outgoing interface and/or the source address */
845 if (usepktinfo)
846 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
847
848 if (hoplimit != -1)
849 ip6optlen += CMSG_SPACE(sizeof(int));
850
851 #ifdef IPV6_REACHCONF
852 if (options & F_REACHCONF)
853 ip6optlen += CMSG_SPACE(0);
854 #endif
855
856 /* set IP6 packet options */
857 if (ip6optlen) {
858 if ((scmsg = (char *)malloc(ip6optlen)) == 0)
859 errx(1, "can't allocate enough memory");
860 smsghdr.msg_control = (caddr_t)scmsg;
861 smsghdr.msg_controllen = ip6optlen;
862 scmsgp = (struct cmsghdr *)scmsg;
863 }
864 if (usepktinfo) {
865 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
866 memset(pktinfo, 0, sizeof(*pktinfo));
867 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
868 scmsgp->cmsg_level = IPPROTO_IPV6;
869 scmsgp->cmsg_type = IPV6_PKTINFO;
870 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
871 }
872
873 /* set the outgoing interface */
874 if (ifname) {
875 #ifndef USE_SIN6_SCOPE_ID
876 /* pktinfo must have already been allocated */
877 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
878 errx(1, "%s: invalid interface name", ifname);
879 #else
880 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
881 errx(1, "%s: invalid interface name", ifname);
882 #endif
883 }
884 if (hoplimit != -1) {
885 scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
886 scmsgp->cmsg_level = IPPROTO_IPV6;
887 scmsgp->cmsg_type = IPV6_HOPLIMIT;
888 *(int *)(CMSG_DATA(scmsgp)) = hoplimit;
889
890 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
891 }
892 #ifdef IPV6_REACHCONF
893 if (options & F_REACHCONF) {
894 scmsgp->cmsg_len = CMSG_LEN(0);
895 scmsgp->cmsg_level = IPPROTO_IPV6;
896 scmsgp->cmsg_type = IPV6_REACHCONF;
897
898 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
899 }
900 #endif
901
902 if (argc > 1) { /* some intermediate addrs are specified */
903 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
904 int hops, error;
905 int rthdrlen;
906
907 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
908 scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
909 scmsgp->cmsg_level = IPPROTO_IPV6;
910 scmsgp->cmsg_type = IPV6_RTHDR;
911 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
912 rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
913 IPV6_RTHDR_TYPE_0, argc - 1);
914 if (rthdr == NULL)
915 errx(1, "can't initialize rthdr");
916
917 for (hops = 0; hops < argc - 1; hops++) {
918 struct addrinfo *iaip;
919
920 if ((error = getaddrinfo(argv[hops], NULL, &hints,
921 &iaip)))
922 errx(1, "%s", gai_strerror(error));
923 if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6)
924 errx(1,
925 "bad addr family of an intermediate addr");
926
927 if (inet6_rth_add(rthdr,
928 &(SIN6(iaip->ai_addr))->sin6_addr))
929 errx(1, "can't add an intermediate node");
930 freeaddrinfo(iaip);
931 }
932
933 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
934 #else
935 errx(1, "compiled without support for routing headers");
936 #endif
937 }
938
939 if (!(options & F_SRCADDR)) {
940 /*
941 * get the source address. XXX since we revoked the root
942 * privilege, we cannot use a raw socket for this.
943 */
944 int dummy;
945 socklen_t len = sizeof(src);
946
947 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
948 err(1, "UDP socket");
949
950 src.sin6_family = AF_INET6;
951 src.sin6_addr = dst.sin6_addr;
952 src.sin6_port = ntohs(DUMMY_PORT);
953 src.sin6_scope_id = dst.sin6_scope_id;
954
955 if (pktinfo &&
956 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
957 (void *)pktinfo, sizeof(*pktinfo)))
958 err(1, "UDP setsockopt(IPV6_PKTINFO)");
959
960 if (hoplimit != -1 &&
961 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
962 (void *)&hoplimit, sizeof(hoplimit)))
963 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
964
965 if (hoplimit != -1 &&
966 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
967 (void *)&hoplimit, sizeof(hoplimit)))
968 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
969
970 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
971 if (rthdr &&
972 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
973 (void *)rthdr, (rthdr->ip6r_len + 1) << 3))
974 err(1, "UDP setsockopt(IPV6_RTHDR)");
975 #endif
976
977 if (connect(dummy, (struct sockaddr *)&src, len) < 0)
978 err(1, "UDP connect");
979
980 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
981 err(1, "getsockname");
982
983 close(dummy);
984 }
985
986 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
987 if (sockbufsize) {
988 if (datalen > sockbufsize)
989 warnx("you need -b to increase socket buffer size");
990 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
991 sizeof(sockbufsize)) < 0)
992 err(1, "setsockopt(SO_SNDBUF)");
993 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
994 sizeof(sockbufsize)) < 0)
995 err(1, "setsockopt(SO_RCVBUF)");
996 }
997 else {
998 if (datalen > 8 * 1024) /*XXX*/
999 warnx("you need -b to increase socket buffer size");
1000 /*
1001 * When pinging the broadcast address, you can get a lot of
1002 * answers. Doing something so evil is useful if you are trying
1003 * to stress the ethernet, or just want to fill the arp cache
1004 * to get some stuff for /etc/ethers.
1005 */
1006 hold = 48 * 1024;
1007 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
1008 sizeof(hold));
1009 }
1010 #endif
1011
1012 optval = 1;
1013 #ifndef USE_SIN6_SCOPE_ID
1014 #ifdef IPV6_RECVPKTINFO
1015 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval,
1016 sizeof(optval)) < 0)
1017 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */
1018 #else /* old adv. API */
1019 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval,
1020 sizeof(optval)) < 0)
1021 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */
1022 #endif
1023 #endif /* USE_SIN6_SCOPE_ID */
1024 #ifdef IPV6_RECVHOPLIMIT
1025 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval,
1026 sizeof(optval)) < 0)
1027 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */
1028 #else /* old adv. API */
1029 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval,
1030 sizeof(optval)) < 0)
1031 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */
1032 #endif
1033
1034 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()),
1035 (unsigned long)(pingerlen() - 8));
1036 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src)));
1037 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst)));
1038
1039 while (preload--) /* Fire off them quickies. */
1040 (void)pinger();
1041
1042 (void)signal(SIGINT, onsignal);
1043 #ifdef SIGINFO
1044 (void)signal(SIGINFO, onsignal);
1045 #endif
1046
1047 if ((options & F_FLOOD) == 0) {
1048 (void)signal(SIGALRM, onsignal);
1049 itimer.it_interval = interval;
1050 itimer.it_value = interval;
1051 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1052 if (ntransmitted == 0)
1053 retransmit();
1054 }
1055
1056 seenalrm = seenint = 0;
1057 #ifdef SIGINFO
1058 seeninfo = 0;
1059 #endif
1060
1061 for (;;) {
1062 struct msghdr m;
1063 struct cmsghdr *cm;
1064 u_char buf[1024];
1065 struct iovec iov[2];
1066
1067 /* signal handling */
1068 if (seenalrm) {
1069 retransmit();
1070 seenalrm = 0;
1071 continue;
1072 }
1073 if (seenint) {
1074 onint(SIGINT);
1075 seenint = 0;
1076 continue;
1077 }
1078 #ifdef SIGINFO
1079 if (seeninfo) {
1080 summary();
1081 seeninfo = 0;
1082 continue;
1083 }
1084 #endif
1085
1086 if (options & F_FLOOD) {
1087 (void)pinger();
1088 timeout = 10;
1089 } else {
1090 timeout = INFTIM;
1091 }
1092 fdmaskp[0].fd = s;
1093 fdmaskp[0].events = POLLIN;
1094 cc = poll(fdmaskp, 1, timeout);
1095 if (cc < 0) {
1096 if (errno != EINTR) {
1097 warn("poll");
1098 sleep(1);
1099 }
1100 continue;
1101 } else if (cc == 0)
1102 continue;
1103
1104 m.msg_name = (caddr_t)&from;
1105 m.msg_namelen = sizeof(from);
1106 memset(&iov, 0, sizeof(iov));
1107 iov[0].iov_base = (caddr_t)packet;
1108 iov[0].iov_len = packlen;
1109 m.msg_iov = iov;
1110 m.msg_iovlen = 1;
1111 cm = (struct cmsghdr *)buf;
1112 m.msg_control = (caddr_t)buf;
1113 m.msg_controllen = sizeof(buf);
1114
1115 cc = recvmsg(s, &m, 0);
1116 if (cc < 0) {
1117 if (errno != EINTR) {
1118 warn("recvmsg");
1119 sleep(1);
1120 }
1121 continue;
1122 } else if (cc == 0) {
1123 int mtu;
1124
1125 /*
1126 * receive control messages only. Process the
1127 * exceptions (currently the only possiblity is
1128 * a path MTU notification.)
1129 */
1130 if ((mtu = get_pathmtu(&m)) > 0) {
1131 if ((options & F_VERBOSE) != 0) {
1132 printf("new path MTU (%d) is "
1133 "notified\n", mtu);
1134 }
1135 }
1136 continue;
1137 } else {
1138 /*
1139 * an ICMPv6 message (probably an echoreply) arrived.
1140 */
1141 pr_pack(packet, cc, &m);
1142 }
1143 if (npackets && nreceived >= npackets)
1144 break;
1145 }
1146 summary();
1147 exit(nreceived == 0);
1148 }
1149
1150 void
onsignal(int sig)1151 onsignal(int sig)
1152 {
1153
1154 switch (sig) {
1155 case SIGALRM:
1156 seenalrm++;
1157 break;
1158 case SIGINT:
1159 seenint++;
1160 break;
1161 #ifdef SIGINFO
1162 case SIGINFO:
1163 seeninfo++;
1164 break;
1165 #endif
1166 }
1167 }
1168
1169 /*
1170 * retransmit --
1171 * This routine transmits another ping6.
1172 */
1173 void
retransmit(void)1174 retransmit(void)
1175 {
1176 struct itimerval itimer;
1177
1178 if (pinger() == 0)
1179 return;
1180
1181 /*
1182 * If we're not transmitting any more packets, change the timer
1183 * to wait two round-trip times if we've received any packets or
1184 * ten seconds if we haven't.
1185 */
1186 #define MAXWAIT 10
1187 if (nreceived) {
1188 itimer.it_value.tv_sec = 2 * tmax / 1000;
1189 if (itimer.it_value.tv_sec == 0)
1190 itimer.it_value.tv_sec = 1;
1191 } else
1192 itimer.it_value.tv_sec = MAXWAIT;
1193 itimer.it_interval.tv_sec = 0;
1194 itimer.it_interval.tv_usec = 0;
1195 itimer.it_value.tv_usec = 0;
1196
1197 (void)signal(SIGALRM, onint);
1198 (void)setitimer(ITIMER_REAL, &itimer, NULL);
1199 }
1200
1201 /*
1202 * pinger --
1203 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1204 * will be added on by the kernel. The ID field is our UNIX process ID,
1205 * and the sequence number is an ascending integer. The first 8 bytes
1206 * of the data portion are used to hold a UNIX "timeval" struct in VAX
1207 * byte-order, to compute the round-trip time.
1208 */
1209 size_t
pingerlen(void)1210 pingerlen(void)
1211 {
1212 size_t l;
1213
1214 if (options & F_FQDN)
1215 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1216 else if (options & F_FQDNOLD)
1217 l = ICMP6_NIQLEN;
1218 else if (options & F_NODEADDR)
1219 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1220 else if (options & F_SUPTYPES)
1221 l = ICMP6_NIQLEN;
1222 else
1223 l = ICMP6ECHOLEN + datalen;
1224
1225 return l;
1226 }
1227
1228 int
pinger(void)1229 pinger(void)
1230 {
1231 struct icmp6_hdr *icp;
1232 struct iovec iov[2];
1233 int i, cc;
1234 struct icmp6_nodeinfo *nip;
1235 int seq;
1236
1237 if (npackets && ntransmitted >= npackets)
1238 return(-1); /* no more transmission */
1239
1240 icp = (struct icmp6_hdr *)outpack;
1241 nip = (struct icmp6_nodeinfo *)outpack;
1242 memset(icp, 0, sizeof(*icp));
1243 icp->icmp6_cksum = 0;
1244 seq = ntransmitted++;
1245 CLR(seq % mx_dup_ck);
1246
1247 if (options & F_FQDN) {
1248 icp->icmp6_type = ICMP6_NI_QUERY;
1249 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1250 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1251 nip->ni_flags = htons(0);
1252
1253 memcpy(nip->icmp6_ni_nonce, nonce,
1254 sizeof(nip->icmp6_ni_nonce));
1255 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1256
1257 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1258 sizeof(dst.sin6_addr));
1259 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1260 datalen = 0;
1261 } else if (options & F_FQDNOLD) {
1262 /* packet format in 03 draft - no Subject data on queries */
1263 icp->icmp6_type = ICMP6_NI_QUERY;
1264 icp->icmp6_code = 0; /* code field is always 0 */
1265 nip->ni_qtype = htons(NI_QTYPE_FQDN);
1266 nip->ni_flags = htons(0);
1267
1268 memcpy(nip->icmp6_ni_nonce, nonce,
1269 sizeof(nip->icmp6_ni_nonce));
1270 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1271
1272 cc = ICMP6_NIQLEN;
1273 datalen = 0;
1274 } else if (options & F_NODEADDR) {
1275 icp->icmp6_type = ICMP6_NI_QUERY;
1276 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6;
1277 nip->ni_qtype = htons(NI_QTYPE_NODEADDR);
1278 nip->ni_flags = naflags;
1279
1280 memcpy(nip->icmp6_ni_nonce, nonce,
1281 sizeof(nip->icmp6_ni_nonce));
1282 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1283
1284 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr,
1285 sizeof(dst.sin6_addr));
1286 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr);
1287 datalen = 0;
1288 } else if (options & F_SUPTYPES) {
1289 icp->icmp6_type = ICMP6_NI_QUERY;
1290 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/
1291 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES);
1292 /* we support compressed bitmap */
1293 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS;
1294
1295 memcpy(nip->icmp6_ni_nonce, nonce,
1296 sizeof(nip->icmp6_ni_nonce));
1297 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq);
1298 cc = ICMP6_NIQLEN;
1299 datalen = 0;
1300 } else {
1301 icp->icmp6_type = ICMP6_ECHO_REQUEST;
1302 icp->icmp6_code = 0;
1303 icp->icmp6_id = htons(ident);
1304 icp->icmp6_seq = ntohs(seq);
1305 if (timing) {
1306 struct timeval tv;
1307 struct tv32 *tv32;
1308 (void)gettimeofday(&tv, NULL);
1309 tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN];
1310 tv32->tv32_sec = htonl(tv.tv_sec);
1311 tv32->tv32_usec = htonl(tv.tv_usec);
1312 }
1313 cc = ICMP6ECHOLEN + datalen;
1314 }
1315
1316 #ifdef DIAGNOSTIC
1317 if (pingerlen() != cc)
1318 errx(1, "internal error; length mismatch");
1319 #endif
1320
1321 smsghdr.msg_name = (caddr_t)&dst;
1322 smsghdr.msg_namelen = sizeof(dst);
1323 memset(&iov, 0, sizeof(iov));
1324 iov[0].iov_base = (caddr_t)outpack;
1325 iov[0].iov_len = cc;
1326 smsghdr.msg_iov = iov;
1327 smsghdr.msg_iovlen = 1;
1328
1329 i = sendmsg(s, &smsghdr, 0);
1330
1331 if (i < 0 || i != cc) {
1332 if (i < 0)
1333 warn("sendmsg");
1334 (void)printf("ping6: wrote %s %d chars, ret=%d\n",
1335 hostname, cc, i);
1336 }
1337 if (!(options & F_QUIET) && options & F_FLOOD)
1338 (void)write(STDOUT_FILENO, &DOT, 1);
1339
1340 return(0);
1341 }
1342
1343 int
myechoreply(const struct icmp6_hdr * icp)1344 myechoreply(const struct icmp6_hdr *icp)
1345 {
1346 if (ntohs(icp->icmp6_id) == ident)
1347 return 1;
1348 else
1349 return 0;
1350 }
1351
1352 int
mynireply(const struct icmp6_nodeinfo * nip)1353 mynireply(const struct icmp6_nodeinfo *nip)
1354 {
1355 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t),
1356 nonce + sizeof(u_int16_t),
1357 sizeof(nonce) - sizeof(u_int16_t)) == 0)
1358 return 1;
1359 else
1360 return 0;
1361 }
1362
1363 char *
dnsdecode(const u_char ** sp,const u_char * ep,const u_char * base,char * buf,size_t bufsiz)1364 dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf,
1365 size_t bufsiz)
1366 {
1367 int i;
1368 const u_char *cp;
1369 char cresult[MAXDNAME + 1];
1370 const u_char *comp;
1371 int l;
1372
1373 i = 0; /* XXXGCC -Wuninitialized [sun2] */
1374
1375 cp = *sp;
1376 *buf = '\0';
1377
1378 if (cp >= ep)
1379 return NULL;
1380 while (cp < ep) {
1381 i = *cp;
1382 if (i == 0 || cp != *sp) {
1383 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz)
1384 return NULL; /*result overrun*/
1385 }
1386 if (i == 0)
1387 break;
1388 cp++;
1389
1390 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) {
1391 /* DNS compression */
1392 if (!base)
1393 return NULL;
1394
1395 comp = base + (i & 0x3f);
1396 if (dnsdecode(&comp, cp, base, cresult,
1397 sizeof(cresult)) == NULL)
1398 return NULL;
1399 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1400 return NULL; /*result overrun*/
1401 break;
1402 } else if ((i & 0x3f) == i) {
1403 if (i > ep - cp)
1404 return NULL; /*source overrun*/
1405 while (i-- > 0 && cp < ep) {
1406 l = snprintf(cresult, sizeof(cresult),
1407 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff);
1408 if (l >= (int)sizeof(cresult) || l < 0)
1409 return NULL;
1410 if (strlcat(buf, cresult, bufsiz) >= bufsiz)
1411 return NULL; /*result overrun*/
1412 cp++;
1413 }
1414 } else
1415 return NULL; /*invalid label*/
1416 }
1417 if (i != 0)
1418 return NULL; /*not terminated*/
1419 cp++;
1420 *sp = cp;
1421 return buf;
1422 }
1423
1424 /*
1425 * pr_pack --
1426 * Print out the packet, if it came from us. This logic is necessary
1427 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1428 * which arrive ('tis only fair). This permits multiple copies of this
1429 * program to be run without having intermingled output (or statistics!).
1430 */
1431 void
pr_pack(u_char * buf,int cc,struct msghdr * mhdr)1432 pr_pack(u_char *buf, int cc, struct msghdr *mhdr)
1433 {
1434 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c)
1435 struct icmp6_hdr *icp;
1436 struct icmp6_nodeinfo *ni;
1437 int i;
1438 int hoplim;
1439 struct sockaddr *from;
1440 int fromlen;
1441 u_char *cp = NULL, *dp, *end = buf + cc;
1442 struct in6_pktinfo *pktinfo = NULL;
1443 struct timeval tv, tp;
1444 struct tv32 *tpp;
1445 double triptime = 0;
1446 int dupflag;
1447 size_t off;
1448 int oldfqdn;
1449 u_int16_t seq;
1450 char dnsname[MAXDNAME + 1];
1451
1452 (void)gettimeofday(&tv, NULL);
1453
1454 if (!mhdr || !mhdr->msg_name ||
1455 mhdr->msg_namelen != sizeof(struct sockaddr_in6) ||
1456 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) {
1457 if (options & F_VERBOSE)
1458 warnx("invalid peername");
1459 return;
1460 }
1461 from = (struct sockaddr *)mhdr->msg_name;
1462 fromlen = mhdr->msg_namelen;
1463 if (cc < (int)sizeof(struct icmp6_hdr)) {
1464 if (options & F_VERBOSE)
1465 warnx("packet too short (%d bytes) from %s", cc,
1466 pr_addr(from, fromlen));
1467 return;
1468 }
1469 icp = (struct icmp6_hdr *)buf;
1470 ni = (struct icmp6_nodeinfo *)buf;
1471 off = 0;
1472
1473 if ((hoplim = get_hoplim(mhdr)) == -1) {
1474 warnx("failed to get receiving hop limit");
1475 return;
1476 }
1477 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) {
1478 warnx("failed to get receiving packet information");
1479 return;
1480 }
1481
1482 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) {
1483 seq = ntohs(icp->icmp6_seq);
1484 ++nreceived;
1485 if (timing) {
1486 tpp = (struct tv32 *)(icp + 1);
1487 tp.tv_sec = ntohl(tpp->tv32_sec);
1488 tp.tv_usec = ntohl(tpp->tv32_usec);
1489 tvsub(&tv, &tp);
1490 triptime = ((double)tv.tv_sec) * 1000.0 +
1491 ((double)tv.tv_usec) / 1000.0;
1492 tsum += triptime;
1493 tsumsq += triptime * triptime;
1494 if (triptime < tmin)
1495 tmin = triptime;
1496 if (triptime > tmax)
1497 tmax = triptime;
1498 }
1499
1500 if (TST(seq % mx_dup_ck)) {
1501 ++nrepeats;
1502 --nreceived;
1503 dupflag = 1;
1504 } else {
1505 SET(seq % mx_dup_ck);
1506 dupflag = 0;
1507 }
1508
1509 if (options & F_QUIET)
1510 return;
1511
1512 if (options & F_FLOOD)
1513 (void)write(STDOUT_FILENO, &BSPACE, 1);
1514 else {
1515 (void)printf("%d bytes from %s, icmp_seq=%u", cc,
1516 pr_addr(from, fromlen), seq);
1517 (void)printf(" hlim=%d", hoplim);
1518 if ((options & F_VERBOSE) != 0) {
1519 struct sockaddr_in6 dstsa;
1520
1521 memset(&dstsa, 0, sizeof(dstsa));
1522 dstsa.sin6_family = AF_INET6;
1523 #ifdef SIN6_LEN
1524 dstsa.sin6_len = sizeof(dstsa);
1525 #endif
1526 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex;
1527 dstsa.sin6_addr = pktinfo->ipi6_addr;
1528 (void)printf(" dst=%s",
1529 pr_addr((struct sockaddr *)&dstsa,
1530 sizeof(dstsa)));
1531 }
1532 if (timing)
1533 (void)printf(" time=%.3f ms", triptime);
1534 if (dupflag)
1535 (void)printf("(DUP!)");
1536 /* check the data */
1537 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1538 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
1539 for (i = 8; cp < end; ++i, ++cp, ++dp) {
1540 if (*cp != *dp) {
1541 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
1542 break;
1543 }
1544 }
1545 }
1546 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) {
1547 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce);
1548 ++nreceived;
1549 if (TST(seq % mx_dup_ck)) {
1550 ++nrepeats;
1551 --nreceived;
1552 dupflag = 1;
1553 } else {
1554 SET(seq % mx_dup_ck);
1555 dupflag = 0;
1556 }
1557
1558 if (options & F_QUIET)
1559 return;
1560
1561 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1562
1563 switch (ntohs(ni->ni_code)) {
1564 case ICMP6_NI_SUCCESS:
1565 break;
1566 case ICMP6_NI_REFUSED:
1567 printf("refused, type 0x%x", ntohs(ni->ni_type));
1568 goto fqdnend;
1569 case ICMP6_NI_UNKNOWN:
1570 printf("unknown, type 0x%x", ntohs(ni->ni_type));
1571 goto fqdnend;
1572 default:
1573 printf("unknown code 0x%x, type 0x%x",
1574 ntohs(ni->ni_code), ntohs(ni->ni_type));
1575 goto fqdnend;
1576 }
1577
1578 switch (ntohs(ni->ni_qtype)) {
1579 case NI_QTYPE_NOOP:
1580 printf("NodeInfo NOOP");
1581 break;
1582 case NI_QTYPE_SUPTYPES:
1583 pr_suptypes(ni, end - (u_char *)ni);
1584 break;
1585 case NI_QTYPE_NODEADDR:
1586 pr_nodeaddr(ni, end - (u_char *)ni);
1587 break;
1588 case NI_QTYPE_FQDN:
1589 default: /* XXX: for backward compatibility */
1590 cp = (u_char *)ni + ICMP6_NIRLEN;
1591 if (buf[off + ICMP6_NIRLEN] ==
1592 cc - off - ICMP6_NIRLEN - 1)
1593 oldfqdn = 1;
1594 else
1595 oldfqdn = 0;
1596 if (oldfqdn) {
1597 cp++; /* skip length */
1598 while (cp < end) {
1599 safeputc(*cp & 0xff);
1600 cp++;
1601 }
1602 } else {
1603 i = 0;
1604 while (cp < end) {
1605 if (dnsdecode((const u_char **)&cp, end,
1606 (const u_char *)(ni + 1), dnsname,
1607 sizeof(dnsname)) == NULL) {
1608 printf("???");
1609 break;
1610 }
1611 /*
1612 * name-lookup special handling for
1613 * truncated name
1614 */
1615 if (cp + 1 <= end && !*cp &&
1616 strlen(dnsname) > 0) {
1617 dnsname[strlen(dnsname) - 1] = '\0';
1618 cp++;
1619 }
1620 printf("%s%s", i > 0 ? "," : "",
1621 dnsname);
1622 }
1623 }
1624 if (options & F_VERBOSE) {
1625 int32_t ttl;
1626 int comma = 0;
1627
1628 (void)printf(" ("); /*)*/
1629
1630 switch (ni->ni_code) {
1631 case ICMP6_NI_REFUSED:
1632 (void)printf("refused");
1633 comma++;
1634 break;
1635 case ICMP6_NI_UNKNOWN:
1636 (void)printf("unknown qtype");
1637 comma++;
1638 break;
1639 }
1640
1641 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
1642 /* case of refusion, unknown */
1643 /*(*/
1644 putchar(')');
1645 goto fqdnend;
1646 }
1647 ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]);
1648 if (comma)
1649 printf(",");
1650 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) {
1651 (void)printf("TTL=%d:meaningless",
1652 (int)ttl);
1653 } else {
1654 if (ttl < 0) {
1655 (void)printf("TTL=%d:invalid",
1656 ttl);
1657 } else
1658 (void)printf("TTL=%d", ttl);
1659 }
1660 comma++;
1661
1662 if (oldfqdn) {
1663 if (comma)
1664 printf(",");
1665 printf("03 draft");
1666 comma++;
1667 } else {
1668 cp = (u_char *)ni + ICMP6_NIRLEN;
1669 if (cp == end) {
1670 if (comma)
1671 printf(",");
1672 printf("no name");
1673 comma++;
1674 }
1675 }
1676
1677 if (buf[off + ICMP6_NIRLEN] !=
1678 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) {
1679 if (comma)
1680 printf(",");
1681 (void)printf("invalid namelen:%d/%lu",
1682 buf[off + ICMP6_NIRLEN],
1683 (u_long)cc - off - ICMP6_NIRLEN - 1);
1684 comma++;
1685 }
1686 /*(*/
1687 putchar(')');
1688 }
1689 fqdnend:
1690 ;
1691 }
1692 } else {
1693 /* We've got something other than an ECHOREPLY */
1694 if (!(options & F_VERBOSE))
1695 return;
1696 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen));
1697 pr_icmph(icp, end);
1698 }
1699
1700 if (!(options & F_FLOOD)) {
1701 (void)putchar('\n');
1702 if (options & F_VERBOSE)
1703 pr_exthdrs(mhdr);
1704 (void)fflush(stdout);
1705 }
1706 #undef safeputc
1707 }
1708
1709 void
pr_exthdrs(struct msghdr * mhdr)1710 pr_exthdrs(struct msghdr *mhdr)
1711 {
1712 struct cmsghdr *cm;
1713
1714 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
1715 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
1716 if (cm->cmsg_level != IPPROTO_IPV6)
1717 continue;
1718
1719 switch (cm->cmsg_type) {
1720 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
1721 case IPV6_HOPOPTS:
1722 printf(" HbH Options: ");
1723 pr_ip6opt(CMSG_DATA(cm));
1724 break;
1725 case IPV6_DSTOPTS:
1726 #ifdef IPV6_RTHDRDSTOPTS
1727 case IPV6_RTHDRDSTOPTS:
1728 #endif
1729 printf(" Dst Options: ");
1730 pr_ip6opt(CMSG_DATA(cm));
1731 break;
1732 case IPV6_RTHDR:
1733 printf(" Routing: ");
1734 pr_rthdr(CMSG_DATA(cm));
1735 break;
1736 #endif
1737 }
1738 }
1739 }
1740
1741 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
1742 void
pr_ip6opt(void * extbuf)1743 pr_ip6opt(void *extbuf)
1744 {
1745 struct ip6_hbh *ext;
1746 int currentlen;
1747 u_int8_t type;
1748 size_t extlen;
1749 socklen_t len;
1750 void *databuf;
1751 size_t offset;
1752 u_int16_t value2;
1753 u_int32_t value4;
1754
1755 ext = (struct ip6_hbh *)extbuf;
1756 extlen = (ext->ip6h_len + 1) * 8;
1757 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt,
1758 (unsigned int)ext->ip6h_len, (unsigned long)extlen);
1759
1760 currentlen = 0;
1761 while (1) {
1762 currentlen = inet6_opt_next(extbuf, extlen, currentlen,
1763 &type, &len, &databuf);
1764 if (currentlen == -1)
1765 break;
1766 switch (type) {
1767 /*
1768 * Note that inet6_opt_next automatically skips any padding
1769 * optins.
1770 */
1771 case IP6OPT_JUMBO:
1772 offset = 0;
1773 offset = inet6_opt_get_val(databuf, offset,
1774 &value4, sizeof(value4));
1775 printf(" Jumbo Payload Opt: Length %u\n",
1776 (u_int32_t)ntohl(value4));
1777 break;
1778 case IP6OPT_ROUTER_ALERT:
1779 offset = 0;
1780 offset = inet6_opt_get_val(databuf, offset,
1781 &value2, sizeof(value2));
1782 printf(" Router Alert Opt: Type %u\n",
1783 ntohs(value2));
1784 break;
1785 default:
1786 printf(" Received Opt %u len %lu\n",
1787 type, (unsigned long)len);
1788 break;
1789 }
1790 }
1791 return;
1792 }
1793 #endif
1794
1795 #ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
1796 void
pr_rthdr(void * extbuf)1797 pr_rthdr(void *extbuf)
1798 {
1799 struct in6_addr *in6;
1800 char ntopbuf[INET6_ADDRSTRLEN];
1801 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf;
1802 int i, segments;
1803
1804 /* print fixed part of the header */
1805 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt,
1806 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type);
1807 if ((segments = inet6_rth_segments(extbuf)) >= 0)
1808 printf("%d segments, ", segments);
1809 else
1810 printf("segments unknown, ");
1811 printf("%d left\n", rh->ip6r_segleft);
1812
1813 for (i = 0; i < segments; i++) {
1814 in6 = inet6_rth_getaddr(extbuf, i);
1815 if (in6 == NULL)
1816 printf(" [%d]<NULL>\n", i);
1817 else {
1818 if (!inet_ntop(AF_INET6, in6, ntopbuf,
1819 sizeof(ntopbuf)))
1820 strlcpy(ntopbuf, "?", sizeof(ntopbuf));
1821 printf(" [%d]%s\n", i, ntopbuf);
1822 }
1823 }
1824
1825 return;
1826
1827 }
1828 #endif
1829
1830 int
pr_bitrange(u_int32_t v,int soff,int ii)1831 pr_bitrange(u_int32_t v, int soff, int ii)
1832 {
1833 int off;
1834 int i;
1835
1836 off = 0;
1837 while (off < 32) {
1838 /* shift till we have 0x01 */
1839 if ((v & 0x01) == 0) {
1840 if (ii > 1)
1841 printf("-%u", soff + off - 1);
1842 ii = 0;
1843 switch (v & 0x0f) {
1844 case 0x00:
1845 v >>= 4;
1846 off += 4;
1847 continue;
1848 case 0x08:
1849 v >>= 3;
1850 off += 3;
1851 continue;
1852 case 0x04: case 0x0c:
1853 v >>= 2;
1854 off += 2;
1855 continue;
1856 default:
1857 v >>= 1;
1858 off += 1;
1859 continue;
1860 }
1861 }
1862
1863 /* we have 0x01 with us */
1864 for (i = 0; i < 32 - off; i++) {
1865 if ((v & (0x01 << i)) == 0)
1866 break;
1867 }
1868 if (!ii)
1869 printf(" %u", soff + off);
1870 ii += i;
1871 v >>= i; off += i;
1872 }
1873 return ii;
1874 }
1875
1876 void
pr_suptypes(struct icmp6_nodeinfo * ni,size_t nilen)1877 pr_suptypes(struct icmp6_nodeinfo *ni /* ni->qtype must be SUPTYPES */,
1878 size_t nilen)
1879 {
1880 size_t clen;
1881 u_int32_t v;
1882 const u_char *cp, *end;
1883 u_int16_t cur;
1884 struct cbit {
1885 u_int16_t words; /*32bit count*/
1886 u_int16_t skip;
1887 } cbit;
1888 #define MAXQTYPES (1 << 16)
1889 size_t off;
1890 int b;
1891
1892 cp = (u_char *)(ni + 1);
1893 end = ((u_char *)ni) + nilen;
1894 cur = 0;
1895 b = 0;
1896
1897 printf("NodeInfo Supported Qtypes");
1898 if (options & F_VERBOSE) {
1899 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS)
1900 printf(", compressed bitmap");
1901 else
1902 printf(", raw bitmap");
1903 }
1904
1905 while (cp < end) {
1906 clen = (size_t)(end - cp);
1907 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) {
1908 if (clen == 0 || clen > MAXQTYPES / 8 ||
1909 clen % sizeof(v)) {
1910 printf("???");
1911 return;
1912 }
1913 } else {
1914 if (clen < sizeof(cbit) || clen % sizeof(v))
1915 return;
1916 memcpy(&cbit, cp, sizeof(cbit));
1917 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) >
1918 clen)
1919 return;
1920 cp += sizeof(cbit);
1921 clen = ntohs(cbit.words) * sizeof(v);
1922 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 >
1923 MAXQTYPES)
1924 return;
1925 }
1926
1927 for (off = 0; off < clen; off += sizeof(v)) {
1928 memcpy(&v, cp + off, sizeof(v));
1929 v = (u_int32_t)ntohl(v);
1930 b = pr_bitrange(v, (int)(cur + off * 8), b);
1931 }
1932 /* flush the remaining bits */
1933 b = pr_bitrange(0, (int)(cur + off * 8), b);
1934
1935 cp += clen;
1936 cur += clen * 8;
1937 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0)
1938 cur += ntohs(cbit.skip) * 32;
1939 }
1940 }
1941
1942 void
pr_nodeaddr(struct icmp6_nodeinfo * ni,int nilen)1943 pr_nodeaddr(struct icmp6_nodeinfo *ni, /* ni->qtype must be NODEADDR */
1944 int nilen)
1945 {
1946 u_char *cp = (u_char *)(ni + 1);
1947 char ntop_buf[INET6_ADDRSTRLEN];
1948 int withttl = 0;
1949
1950 nilen -= sizeof(struct icmp6_nodeinfo);
1951
1952 if (options & F_VERBOSE) {
1953 switch (ni->ni_code) {
1954 case ICMP6_NI_REFUSED:
1955 (void)printf("refused");
1956 break;
1957 case ICMP6_NI_UNKNOWN:
1958 (void)printf("unknown qtype");
1959 break;
1960 }
1961 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE)
1962 (void)printf(" truncated");
1963 }
1964 putchar('\n');
1965 if (nilen <= 0)
1966 printf(" no address\n");
1967
1968 /*
1969 * In icmp-name-lookups 05 and later, TTL of each returned address
1970 * is contained in the resposne. We try to detect the version
1971 * by the length of the data, but note that the detection algorithm
1972 * is incomplete. We assume the latest draft by default.
1973 */
1974 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0)
1975 withttl = 1;
1976 while (nilen > 0) {
1977 u_int32_t ttl = 0;
1978
1979 if (withttl) {
1980 /* XXX: alignment? */
1981 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp);
1982 cp += sizeof(u_int32_t);
1983 nilen -= sizeof(u_int32_t);
1984 }
1985
1986 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) ==
1987 NULL)
1988 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
1989 printf(" %s", ntop_buf);
1990 if (withttl) {
1991 if (ttl == 0xffffffff) {
1992 /*
1993 * XXX: can this convention be applied to all
1994 * type of TTL (i.e. non-ND TTL)?
1995 */
1996 printf("(TTL=infty)");
1997 }
1998 else
1999 printf("(TTL=%u)", ttl);
2000 }
2001 putchar('\n');
2002
2003 nilen -= sizeof(struct in6_addr);
2004 cp += sizeof(struct in6_addr);
2005 }
2006 }
2007
2008 int
get_hoplim(struct msghdr * mhdr)2009 get_hoplim(struct msghdr *mhdr)
2010 {
2011 struct cmsghdr *cm;
2012
2013 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2014 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2015 if (cm->cmsg_len == 0)
2016 return(-1);
2017
2018 if (cm->cmsg_level == IPPROTO_IPV6 &&
2019 cm->cmsg_type == IPV6_HOPLIMIT &&
2020 cm->cmsg_len == CMSG_LEN(sizeof(int)))
2021 return(*(int *)CMSG_DATA(cm));
2022 }
2023
2024 return(-1);
2025 }
2026
2027 struct in6_pktinfo *
get_rcvpktinfo(struct msghdr * mhdr)2028 get_rcvpktinfo(struct msghdr *mhdr)
2029 {
2030 struct cmsghdr *cm;
2031
2032 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2033 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2034 if (cm->cmsg_len == 0)
2035 return(NULL);
2036
2037 if (cm->cmsg_level == IPPROTO_IPV6 &&
2038 cm->cmsg_type == IPV6_PKTINFO &&
2039 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
2040 return((struct in6_pktinfo *)CMSG_DATA(cm));
2041 }
2042
2043 return(NULL);
2044 }
2045
2046 int
get_pathmtu(struct msghdr * mhdr)2047 get_pathmtu(struct msghdr *mhdr)
2048 {
2049 #ifdef IPV6_RECVPATHMTU
2050 struct cmsghdr *cm;
2051 struct ip6_mtuinfo *mtuctl = NULL;
2052
2053 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
2054 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
2055 if (cm->cmsg_len == 0)
2056 return(0);
2057
2058 if (cm->cmsg_level == IPPROTO_IPV6 &&
2059 cm->cmsg_type == IPV6_PATHMTU &&
2060 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) {
2061 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm);
2062
2063 /*
2064 * If the notified destination is different from
2065 * the one we are pinging, just ignore the info.
2066 * We check the scope ID only when both notified value
2067 * and our own value have non-0 values, because we may
2068 * have used the default scope zone ID for sending,
2069 * in which case the scope ID value is 0.
2070 */
2071 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr,
2072 &dst.sin6_addr) ||
2073 (mtuctl->ip6m_addr.sin6_scope_id &&
2074 dst.sin6_scope_id &&
2075 mtuctl->ip6m_addr.sin6_scope_id !=
2076 dst.sin6_scope_id)) {
2077 if ((options & F_VERBOSE) != 0) {
2078 printf("path MTU for %s is notified. "
2079 "(ignored)\n",
2080 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr,
2081 sizeof(mtuctl->ip6m_addr)));
2082 }
2083 return(0);
2084 }
2085
2086 /*
2087 * Ignore an invalid MTU. XXX: can we just believe
2088 * the kernel check?
2089 */
2090 if (mtuctl->ip6m_mtu < IPV6_MMTU)
2091 return(0);
2092
2093 /* notification for our destination. return the MTU. */
2094 return((int)mtuctl->ip6m_mtu);
2095 }
2096 }
2097 #endif
2098 return(0);
2099 }
2100
2101 /*
2102 * tvsub --
2103 * Subtract 2 timeval structs: out = out - in. Out is assumed to
2104 * be >= in.
2105 */
2106 void
tvsub(struct timeval * out,struct timeval * in)2107 tvsub(struct timeval *out, struct timeval *in)
2108 {
2109 if ((out->tv_usec -= in->tv_usec) < 0) {
2110 --out->tv_sec;
2111 out->tv_usec += 1000000;
2112 }
2113 out->tv_sec -= in->tv_sec;
2114 }
2115
2116 /*
2117 * onint --
2118 * SIGINT handler.
2119 */
2120 /* ARGSUSED */
2121 void
onint(int notused)2122 onint(int notused)
2123 {
2124 summary();
2125
2126 (void)signal(SIGINT, SIG_DFL);
2127 (void)kill(getpid(), SIGINT);
2128
2129 /* NOTREACHED */
2130 exit(1);
2131 }
2132
2133 /*
2134 * summary --
2135 * Print out statistics.
2136 */
2137 void
summary(void)2138 summary(void)
2139 {
2140
2141 (void)printf("\n--- %s ping6 statistics ---\n", hostname);
2142 (void)printf("%ld packets transmitted, ", ntransmitted);
2143 (void)printf("%ld packets received, ", nreceived);
2144 if (nrepeats)
2145 (void)printf("+%ld duplicates, ", nrepeats);
2146 if (ntransmitted) {
2147 if (nreceived > ntransmitted)
2148 (void)printf("-- somebody's duplicating packets!");
2149 else
2150 (void)printf("%.1f%% packet loss",
2151 ((((double)ntransmitted - nreceived) * 100.0) /
2152 ntransmitted));
2153 }
2154 (void)putchar('\n');
2155 if (nreceived && timing) {
2156 /* Only display average to microseconds */
2157 double num = nreceived + nrepeats;
2158 double dev, avg;
2159 if (num > 1) {
2160 avg = tsum / num;
2161 dev = sqrt((tsumsq - num * avg * avg) / (num - 1));
2162 } else {
2163 avg = tsum;
2164 dev = 0.0;
2165 }
2166 (void)printf(
2167 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n",
2168 tmin, avg, tmax, dev);
2169 (void)fflush(stdout);
2170 }
2171 (void)fflush(stdout);
2172 }
2173
2174 /*subject type*/
2175 static const char *niqcode[] = {
2176 "IPv6 address",
2177 "DNS label", /*or empty*/
2178 "IPv4 address",
2179 };
2180
2181 /*result code*/
2182 static const char *nircode[] = {
2183 "Success", "Refused", "Unknown",
2184 };
2185
2186
2187 /*
2188 * pr_icmph --
2189 * Print a descriptive string about an ICMP header.
2190 */
2191 void
pr_icmph(struct icmp6_hdr * icp,u_char * end)2192 pr_icmph(struct icmp6_hdr *icp, u_char *end)
2193 {
2194 char ntop_buf[INET6_ADDRSTRLEN];
2195 struct nd_redirect *red;
2196 struct icmp6_nodeinfo *ni;
2197 char dnsname[MAXDNAME + 1];
2198 const u_char *cp;
2199 size_t l;
2200
2201 switch (icp->icmp6_type) {
2202 case ICMP6_DST_UNREACH:
2203 switch (icp->icmp6_code) {
2204 case ICMP6_DST_UNREACH_NOROUTE:
2205 (void)printf("No Route to Destination\n");
2206 break;
2207 case ICMP6_DST_UNREACH_ADMIN:
2208 (void)printf("Destination Administratively "
2209 "Unreachable\n");
2210 break;
2211 case ICMP6_DST_UNREACH_BEYONDSCOPE:
2212 (void)printf("Destination Unreachable Beyond Scope\n");
2213 break;
2214 case ICMP6_DST_UNREACH_ADDR:
2215 (void)printf("Destination Host Unreachable\n");
2216 break;
2217 case ICMP6_DST_UNREACH_NOPORT:
2218 (void)printf("Destination Port Unreachable\n");
2219 break;
2220 default:
2221 (void)printf("Destination Unreachable, Bad Code: %d\n",
2222 icp->icmp6_code);
2223 break;
2224 }
2225 /* Print returned IP header information */
2226 pr_retip((struct ip6_hdr *)(icp + 1), end);
2227 break;
2228 case ICMP6_PACKET_TOO_BIG:
2229 (void)printf("Packet too big mtu = %d\n",
2230 (int)ntohl(icp->icmp6_mtu));
2231 pr_retip((struct ip6_hdr *)(icp + 1), end);
2232 break;
2233 case ICMP6_TIME_EXCEEDED:
2234 switch (icp->icmp6_code) {
2235 case ICMP6_TIME_EXCEED_TRANSIT:
2236 (void)printf("Time to live exceeded\n");
2237 break;
2238 case ICMP6_TIME_EXCEED_REASSEMBLY:
2239 (void)printf("Frag reassembly time exceeded\n");
2240 break;
2241 default:
2242 (void)printf("Time exceeded, Bad Code: %d\n",
2243 icp->icmp6_code);
2244 break;
2245 }
2246 pr_retip((struct ip6_hdr *)(icp + 1), end);
2247 break;
2248 case ICMP6_PARAM_PROB:
2249 (void)printf("Parameter problem: ");
2250 switch (icp->icmp6_code) {
2251 case ICMP6_PARAMPROB_HEADER:
2252 (void)printf("Erroneous Header ");
2253 break;
2254 case ICMP6_PARAMPROB_NEXTHEADER:
2255 (void)printf("Unknown Nextheader ");
2256 break;
2257 case ICMP6_PARAMPROB_OPTION:
2258 (void)printf("Unrecognized Option ");
2259 break;
2260 default:
2261 (void)printf("Bad code(%d) ", icp->icmp6_code);
2262 break;
2263 }
2264 (void)printf("pointer = 0x%02x\n",
2265 (u_int32_t)ntohl(icp->icmp6_pptr));
2266 pr_retip((struct ip6_hdr *)(icp + 1), end);
2267 break;
2268 case ICMP6_ECHO_REQUEST:
2269 (void)printf("Echo Request");
2270 /* XXX ID + Seq + Data */
2271 break;
2272 case ICMP6_ECHO_REPLY:
2273 (void)printf("Echo Reply");
2274 /* XXX ID + Seq + Data */
2275 break;
2276 case ICMP6_MEMBERSHIP_QUERY:
2277 (void)printf("Listener Query");
2278 break;
2279 case ICMP6_MEMBERSHIP_REPORT:
2280 (void)printf("Listener Report");
2281 break;
2282 case ICMP6_MEMBERSHIP_REDUCTION:
2283 (void)printf("Listener Done");
2284 break;
2285 case ND_ROUTER_SOLICIT:
2286 (void)printf("Router Solicitation");
2287 break;
2288 case ND_ROUTER_ADVERT:
2289 (void)printf("Router Advertisement");
2290 break;
2291 case ND_NEIGHBOR_SOLICIT:
2292 (void)printf("Neighbor Solicitation");
2293 break;
2294 case ND_NEIGHBOR_ADVERT:
2295 (void)printf("Neighbor Advertisement");
2296 break;
2297 case ND_REDIRECT:
2298 red = (struct nd_redirect *)icp;
2299 (void)printf("Redirect\n");
2300 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf,
2301 sizeof(ntop_buf)))
2302 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2303 (void)printf("Destination: %s", ntop_buf);
2304 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf,
2305 sizeof(ntop_buf)))
2306 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2307 (void)printf(" New Target: %s", ntop_buf);
2308 break;
2309 case ICMP6_NI_QUERY:
2310 (void)printf("Node Information Query");
2311 /* XXX ID + Seq + Data */
2312 ni = (struct icmp6_nodeinfo *)icp;
2313 l = end - (u_char *)(ni + 1);
2314 printf(", ");
2315 switch (ntohs(ni->ni_qtype)) {
2316 case NI_QTYPE_NOOP:
2317 (void)printf("NOOP");
2318 break;
2319 case NI_QTYPE_SUPTYPES:
2320 (void)printf("Supported qtypes");
2321 break;
2322 case NI_QTYPE_FQDN:
2323 (void)printf("DNS name");
2324 break;
2325 case NI_QTYPE_NODEADDR:
2326 (void)printf("nodeaddr");
2327 break;
2328 case NI_QTYPE_IPV4ADDR:
2329 (void)printf("IPv4 nodeaddr");
2330 break;
2331 default:
2332 (void)printf("unknown qtype");
2333 break;
2334 }
2335 if (options & F_VERBOSE) {
2336 switch (ni->ni_code) {
2337 case ICMP6_NI_SUBJ_IPV6:
2338 if (l == sizeof(struct in6_addr) &&
2339 inet_ntop(AF_INET6, ni + 1, ntop_buf,
2340 sizeof(ntop_buf)) != NULL) {
2341 (void)printf(", subject=%s(%s)",
2342 niqcode[ni->ni_code], ntop_buf);
2343 } else {
2344 #if 1
2345 /* backward compat to -W */
2346 (void)printf(", oldfqdn");
2347 #else
2348 (void)printf(", invalid");
2349 #endif
2350 }
2351 break;
2352 case ICMP6_NI_SUBJ_FQDN:
2353 if (end == (u_char *)(ni + 1)) {
2354 (void)printf(", no subject");
2355 break;
2356 }
2357 printf(", subject=%s", niqcode[ni->ni_code]);
2358 cp = (const u_char *)(ni + 1);
2359 if (dnsdecode(&cp, end, NULL, dnsname,
2360 sizeof(dnsname)) != NULL)
2361 printf("(%s)", dnsname);
2362 else
2363 printf("(invalid)");
2364 break;
2365 case ICMP6_NI_SUBJ_IPV4:
2366 if (l == sizeof(struct in_addr) &&
2367 inet_ntop(AF_INET, ni + 1, ntop_buf,
2368 sizeof(ntop_buf)) != NULL) {
2369 (void)printf(", subject=%s(%s)",
2370 niqcode[ni->ni_code], ntop_buf);
2371 } else
2372 (void)printf(", invalid");
2373 break;
2374 default:
2375 (void)printf(", invalid");
2376 break;
2377 }
2378 }
2379 break;
2380 case ICMP6_NI_REPLY:
2381 (void)printf("Node Information Reply");
2382 /* XXX ID + Seq + Data */
2383 ni = (struct icmp6_nodeinfo *)icp;
2384 printf(", ");
2385 switch (ntohs(ni->ni_qtype)) {
2386 case NI_QTYPE_NOOP:
2387 (void)printf("NOOP");
2388 break;
2389 case NI_QTYPE_SUPTYPES:
2390 (void)printf("Supported qtypes");
2391 break;
2392 case NI_QTYPE_FQDN:
2393 (void)printf("DNS name");
2394 break;
2395 case NI_QTYPE_NODEADDR:
2396 (void)printf("nodeaddr");
2397 break;
2398 case NI_QTYPE_IPV4ADDR:
2399 (void)printf("IPv4 nodeaddr");
2400 break;
2401 default:
2402 (void)printf("unknown qtype");
2403 break;
2404 }
2405 if (options & F_VERBOSE) {
2406 if (ni->ni_code >= sizeof(nircode) / sizeof(nircode[0]))
2407 printf(", invalid");
2408 else
2409 printf(", %s", nircode[ni->ni_code]);
2410 }
2411 break;
2412 default:
2413 (void)printf("Bad ICMP type: %d", icp->icmp6_type);
2414 }
2415 }
2416
2417 /*
2418 * pr_iph --
2419 * Print an IP6 header.
2420 */
2421 void
pr_iph(struct ip6_hdr * ip6)2422 pr_iph(struct ip6_hdr *ip6)
2423 {
2424 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
2425 u_int8_t tc;
2426 char ntop_buf[INET6_ADDRSTRLEN];
2427
2428 tc = *(&ip6->ip6_vfc + 1); /* XXX */
2429 tc = (tc >> 4) & 0x0f;
2430 tc |= (ip6->ip6_vfc << 4);
2431
2432 printf("Vr TC Flow Plen Nxt Hlim\n");
2433 printf(" %1x %02x %05x %04x %02x %02x\n",
2434 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow),
2435 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim);
2436 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf)))
2437 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2438 printf("%s->", ntop_buf);
2439 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf)))
2440 strlcpy(ntop_buf, "?", sizeof(ntop_buf));
2441 printf("%s\n", ntop_buf);
2442 }
2443
2444 /*
2445 * pr_addr --
2446 * Return an ascii host address as a dotted quad and optionally with
2447 * a hostname.
2448 */
2449 const char *
pr_addr(struct sockaddr * addr,int addrlen)2450 pr_addr(struct sockaddr *addr, int addrlen)
2451 {
2452 static char buf[NI_MAXHOST];
2453 int flag = 0;
2454
2455 if ((options & F_HOSTNAME) == 0)
2456 flag |= NI_NUMERICHOST;
2457
2458 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0)
2459 return (buf);
2460 else
2461 return "?";
2462 }
2463
2464 /*
2465 * pr_retip --
2466 * Dump some info on a returned (via ICMPv6) IPv6 packet.
2467 */
2468 void
pr_retip(struct ip6_hdr * ip6,u_char * end)2469 pr_retip(struct ip6_hdr *ip6, u_char *end)
2470 {
2471 u_char *cp = (u_char *)ip6, nh;
2472 int hlen;
2473
2474 if (end - (u_char *)ip6 < (intptr_t)sizeof(*ip6)) {
2475 printf("IP6");
2476 goto trunc;
2477 }
2478 pr_iph(ip6);
2479 hlen = sizeof(*ip6);
2480
2481 nh = ip6->ip6_nxt;
2482 cp += hlen;
2483 while (end - cp >= 8) {
2484 switch (nh) {
2485 case IPPROTO_HOPOPTS:
2486 printf("HBH ");
2487 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
2488 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
2489 break;
2490 case IPPROTO_DSTOPTS:
2491 printf("DSTOPT ");
2492 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
2493 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
2494 break;
2495 case IPPROTO_FRAGMENT:
2496 printf("FRAG ");
2497 hlen = sizeof(struct ip6_frag);
2498 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
2499 break;
2500 case IPPROTO_ROUTING:
2501 printf("RTHDR ");
2502 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
2503 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
2504 break;
2505 #ifdef IPSEC
2506 case IPPROTO_AH:
2507 printf("AH ");
2508 hlen = (((struct ah *)cp)->ah_len+2) << 2;
2509 nh = ((struct ah *)cp)->ah_nxt;
2510 break;
2511 #endif
2512 case IPPROTO_ICMPV6:
2513 printf("ICMP6: type = %d, code = %d\n",
2514 *cp, *(cp + 1));
2515 return;
2516 case IPPROTO_ESP:
2517 printf("ESP\n");
2518 return;
2519 case IPPROTO_TCP:
2520 printf("TCP: from port %u, to port %u (decimal)\n",
2521 (*cp * 256 + *(cp + 1)),
2522 (*(cp + 2) * 256 + *(cp + 3)));
2523 return;
2524 case IPPROTO_UDP:
2525 printf("UDP: from port %u, to port %u (decimal)\n",
2526 (*cp * 256 + *(cp + 1)),
2527 (*(cp + 2) * 256 + *(cp + 3)));
2528 return;
2529 default:
2530 printf("Unknown Header(%d)\n", nh);
2531 return;
2532 }
2533
2534 if ((cp += hlen) >= end)
2535 goto trunc;
2536 }
2537 if (end - cp < 8)
2538 goto trunc;
2539
2540 putchar('\n');
2541 return;
2542
2543 trunc:
2544 printf("...\n");
2545 return;
2546 }
2547
2548 void
fill(char * bp,char * patp)2549 fill(char *bp, char *patp)
2550 {
2551 int ii, jj, kk;
2552 int pat[16];
2553 char *cp;
2554
2555 for (cp = patp; *cp; cp++)
2556 if (!isxdigit((unsigned char)*cp))
2557 errx(1, "patterns must be specified as hex digits");
2558 ii = sscanf(patp,
2559 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
2560 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
2561 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
2562 &pat[13], &pat[14], &pat[15]);
2563
2564 /* xxx */
2565 if (ii > 0)
2566 for (kk = 0;
2567 kk <= (int)(MAXDATALEN - (8 + sizeof(struct tv32) + ii));
2568 kk += ii)
2569 for (jj = 0; jj < ii; ++jj)
2570 bp[jj + kk] = pat[jj];
2571 if (!(options & F_QUIET)) {
2572 (void)printf("PATTERN: 0x");
2573 for (jj = 0; jj < ii; ++jj)
2574 (void)printf("%02x", bp[jj] & 0xFF);
2575 (void)printf("\n");
2576 }
2577 }
2578
2579 #ifdef IPSEC
2580 #ifdef IPSEC_POLICY_IPSEC
2581 int
setpolicy(int so,char * policy)2582 setpolicy(int so, char *policy)
2583 {
2584 char *buf;
2585
2586 if (policy == NULL)
2587 return 0; /* ignore */
2588
2589 buf = ipsec_set_policy(policy, strlen(policy));
2590 if (buf == NULL)
2591 errx(1, "%s", ipsec_strerror());
2592 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf,
2593 ipsec_get_policylen(buf)) < 0)
2594 warnx("Unable to set IPsec policy");
2595 free(buf);
2596
2597 return 0;
2598 }
2599 #endif
2600 #endif
2601
2602 #ifdef ANDROID_INCLUDE_MD5_SUPPORT
2603 char *
nigroup(char * name)2604 nigroup(char *name)
2605 {
2606 char *p;
2607 char *q;
2608 MD5_CTX ctxt;
2609 u_int8_t digest[16];
2610 u_int8_t c;
2611 size_t l;
2612 char hbuf[NI_MAXHOST];
2613 struct in6_addr in6;
2614
2615 p = strchr(name, '.');
2616 if (!p)
2617 p = name + strlen(name);
2618 l = p - name;
2619 if (l > 63 || l > sizeof(hbuf) - 1)
2620 return NULL; /*label too long*/
2621 strncpy(hbuf, name, l);
2622 hbuf[(int)l] = '\0';
2623
2624 for (q = name; *q; q++) {
2625 if (isupper(*(unsigned char *)q))
2626 *q = tolower(*(unsigned char *)q);
2627 }
2628
2629 /* generate 8 bytes of pseudo-random value. */
2630 memset(&ctxt, 0, sizeof(ctxt));
2631 MD5Init(&ctxt);
2632 c = l & 0xff;
2633 MD5Update(&ctxt, &c, sizeof(c));
2634 MD5Update(&ctxt, (unsigned char *)name, l);
2635 MD5Final(digest, &ctxt);
2636
2637 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1)
2638 return NULL; /*XXX*/
2639 bcopy(digest, &in6.s6_addr[12], 4);
2640
2641 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL)
2642 return NULL;
2643
2644 return strdup(hbuf);
2645 }
2646 #endif
2647
2648 void
usage(void)2649 usage(void)
2650 {
2651 (void)fprintf(stderr,
2652 "usage: ping6 [-dfH"
2653 #ifdef IPV6_USE_MIN_MTU
2654 "m"
2655 #endif
2656 "nNqtvwW"
2657 #ifdef IPV6_REACHCONF
2658 "R"
2659 #endif
2660 #ifdef IPSEC
2661 #ifdef IPSEC_POLICY_IPSEC
2662 "] [-P policy"
2663 #else
2664 "AE"
2665 #endif
2666 #endif
2667 "] [-a [aAclsg]] [-b sockbufsiz] [-c count] \n"
2668 "\t[-I interface] [-i wait] [-l preload] [-p pattern] "
2669 "[-S sourceaddr]\n"
2670 "\t[-s packetsize] [-h hoplimit] [-g gateway] [hops...] host\n");
2671 exit(1);
2672 }
2673