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Eliminate some unused parameters.
[tcpdump] / print-icmp6.c
1 /*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 */
21
22 #ifndef lint
23 static const char rcsid[] =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-icmp6.c,v 1.56 2001-06-27 02:48:43 itojun Exp $";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #ifdef INET6
32
33 #include <ctype.h>
34
35 #include <sys/param.h>
36 #include <sys/time.h>
37 #include <sys/types.h>
38 #include <sys/socket.h>
39
40
41 #include <netinet/in.h>
42
43 #include <arpa/inet.h>
44
45 #include <stdio.h>
46 #include <string.h>
47 #include <netdb.h>
48
49 #include "ip6.h"
50 #include "icmp6.h"
51
52 #include "interface.h"
53 #include "addrtoname.h"
54
55 #include "udp.h"
56 #include "ah.h"
57
58 static const char *get_rtpref(u_int);
59 static const char *get_lifetime(u_int32_t);
60 static void print_lladdr(const u_char *, size_t);
61 void icmp6_opt_print(const u_char *, int);
62 void mld6_print(const u_char *);
63 static struct udphdr *get_upperlayer(u_char *, int *);
64 static void dnsname_print(const u_char *, const u_char *);
65 void icmp6_nodeinfo_print(int, const u_char *, const u_char *);
66 void icmp6_rrenum_print(int, const u_char *, const u_char *);
67
68 #ifndef abs
69 #define abs(a) ((0 < (a)) ? (a) : -(a))
70 #endif
71
72 static const char *
73 get_rtpref(u_int v)
74 {
75 static const char *rtpref_str[] = {
76 "medium", /* 00 */
77 "high", /* 01 */
78 "rsv", /* 10 */
79 "low" /* 11 */
80 };
81
82 return rtpref_str[((v & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff];
83 }
84
85 static const char *
86 get_lifetime(u_int32_t v)
87 {
88 static char buf[20];
89
90 if (v == (u_int32_t)~0UL)
91 return "infinity";
92 else {
93 snprintf(buf, sizeof(buf), "%u", v);
94 return buf;
95 }
96 }
97
98 static void
99 print_lladdr(const u_int8_t *p, size_t l)
100 {
101 const u_int8_t *ep, *q;
102
103 q = p;
104 ep = p + l;
105 while (l > 0 && q < ep) {
106 if (q > p)
107 printf(":");
108 printf("%02x", *q++);
109 l--;
110 }
111 }
112
113 void
114 icmp6_print(const u_char *bp, const u_char *bp2)
115 {
116 const struct icmp6_hdr *dp;
117 const struct ip6_hdr *ip;
118 const char *str;
119 const struct ip6_hdr *oip;
120 const struct udphdr *ouh;
121 int dport;
122 const u_char *ep;
123 char buf[256];
124 int icmp6len, prot;
125
126 dp = (struct icmp6_hdr *)bp;
127 ip = (struct ip6_hdr *)bp2;
128 oip = (struct ip6_hdr *)(dp + 1);
129 str = buf;
130 /* 'ep' points to the end of available data. */
131 ep = snapend;
132 if (ip->ip6_plen)
133 icmp6len = (ntohs(ip->ip6_plen) + sizeof(struct ip6_hdr) -
134 (bp - bp2));
135 else /* XXX: jumbo payload case... */
136 icmp6len = snapend - bp;
137
138 TCHECK(dp->icmp6_code);
139 switch (dp->icmp6_type) {
140 case ICMP6_DST_UNREACH:
141 TCHECK(oip->ip6_dst);
142 switch (dp->icmp6_code) {
143 case ICMP6_DST_UNREACH_NOROUTE:
144 printf("icmp6: %s unreachable route",
145 ip6addr_string(&oip->ip6_dst));
146 break;
147 case ICMP6_DST_UNREACH_ADMIN:
148 printf("icmp6: %s unreachable prohibited",
149 ip6addr_string(&oip->ip6_dst));
150 break;
151 case ICMP6_DST_UNREACH_BEYONDSCOPE:
152 printf("icmp6: %s beyond scope of source address %s",
153 ip6addr_string(&oip->ip6_dst),
154 ip6addr_string(&oip->ip6_src));
155 break;
156 case ICMP6_DST_UNREACH_ADDR:
157 printf("icmp6: %s unreachable address",
158 ip6addr_string(&oip->ip6_dst));
159 break;
160 case ICMP6_DST_UNREACH_NOPORT:
161 if ((ouh = get_upperlayer((u_char *)oip, &prot))
162 == NULL)
163 goto trunc;
164
165 dport = ntohs(ouh->uh_dport);
166 switch (prot) {
167 case IPPROTO_TCP:
168 printf("icmp6: %s tcp port %s unreachable",
169 ip6addr_string(&oip->ip6_dst),
170 tcpport_string(dport));
171 break;
172 case IPPROTO_UDP:
173 printf("icmp6: %s udp port %s unreachable",
174 ip6addr_string(&oip->ip6_dst),
175 udpport_string(dport));
176 break;
177 default:
178 printf("icmp6: %s protocol %d port %d unreachable",
179 ip6addr_string(&oip->ip6_dst),
180 oip->ip6_nxt, dport);
181 break;
182 }
183 break;
184 default:
185 printf("icmp6: %s unreachable code-#%d",
186 ip6addr_string(&oip->ip6_dst),
187 dp->icmp6_code);
188 break;
189 }
190 break;
191 case ICMP6_PACKET_TOO_BIG:
192 TCHECK(dp->icmp6_mtu);
193 printf("icmp6: too big %u", (u_int32_t)ntohl(dp->icmp6_mtu));
194 break;
195 case ICMP6_TIME_EXCEEDED:
196 TCHECK(oip->ip6_dst);
197 switch (dp->icmp6_code) {
198 case ICMP6_TIME_EXCEED_TRANSIT:
199 printf("icmp6: time exceeded in-transit for %s",
200 ip6addr_string(&oip->ip6_dst));
201 break;
202 case ICMP6_TIME_EXCEED_REASSEMBLY:
203 printf("icmp6: ip6 reassembly time exceeded");
204 break;
205 default:
206 printf("icmp6: time exceeded code-#%d",
207 dp->icmp6_code);
208 break;
209 }
210 break;
211 case ICMP6_PARAM_PROB:
212 TCHECK(oip->ip6_dst);
213 switch (dp->icmp6_code) {
214 case ICMP6_PARAMPROB_HEADER:
215 printf("icmp6: parameter problem errorneous - octet %u",
216 (u_int32_t)ntohl(dp->icmp6_pptr));
217 break;
218 case ICMP6_PARAMPROB_NEXTHEADER:
219 printf("icmp6: parameter problem next header - octet %u",
220 (u_int32_t)ntohl(dp->icmp6_pptr));
221 break;
222 case ICMP6_PARAMPROB_OPTION:
223 printf("icmp6: parameter problem option - octet %u",
224 (u_int32_t)ntohl(dp->icmp6_pptr));
225 break;
226 default:
227 printf("icmp6: parameter problem code-#%d",
228 dp->icmp6_code);
229 break;
230 }
231 break;
232 case ICMP6_ECHO_REQUEST:
233 printf("icmp6: echo request");
234 break;
235 case ICMP6_ECHO_REPLY:
236 printf("icmp6: echo reply");
237 break;
238 case ICMP6_MEMBERSHIP_QUERY:
239 printf("icmp6: multicast listener query ");
240 mld6_print((const u_char *)dp);
241 break;
242 case ICMP6_MEMBERSHIP_REPORT:
243 printf("icmp6: multicast listener report ");
244 mld6_print((const u_char *)dp);
245 break;
246 case ICMP6_MEMBERSHIP_REDUCTION:
247 printf("icmp6: multicast listener done ");
248 mld6_print((const u_char *)dp);
249 break;
250 case ND_ROUTER_SOLICIT:
251 printf("icmp6: router solicitation ");
252 if (vflag) {
253 #define RTSOLLEN 8
254 icmp6_opt_print((const u_char *)dp + RTSOLLEN,
255 icmp6len - RTSOLLEN);
256 }
257 break;
258 case ND_ROUTER_ADVERT:
259 printf("icmp6: router advertisement");
260 if (vflag) {
261 struct nd_router_advert *p;
262
263 p = (struct nd_router_advert *)dp;
264 TCHECK(p->nd_ra_retransmit);
265 printf("(chlim=%d, ", (int)p->nd_ra_curhoplimit);
266 if (p->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED)
267 printf("M");
268 if (p->nd_ra_flags_reserved & ND_RA_FLAG_OTHER)
269 printf("O");
270 if (p->nd_ra_flags_reserved & ND_RA_FLAG_HOME_AGENT)
271 printf("H");
272
273 if ((p->nd_ra_flags_reserved & ~ND_RA_FLAG_RTPREF_MASK)
274 != 0)
275 printf(" ");
276
277 printf("pref=%s, ",
278 get_rtpref(p->nd_ra_flags_reserved));
279
280 printf("router_ltime=%d, ", ntohs(p->nd_ra_router_lifetime));
281 printf("reachable_time=%u, ",
282 (u_int32_t)ntohl(p->nd_ra_reachable));
283 printf("retrans_time=%u)",
284 (u_int32_t)ntohl(p->nd_ra_retransmit));
285 #define RTADVLEN 16
286 icmp6_opt_print((const u_char *)dp + RTADVLEN,
287 icmp6len - RTADVLEN);
288 }
289 break;
290 case ND_NEIGHBOR_SOLICIT:
291 {
292 struct nd_neighbor_solicit *p;
293 p = (struct nd_neighbor_solicit *)dp;
294 TCHECK(p->nd_ns_target);
295 printf("icmp6: neighbor sol: who has %s",
296 ip6addr_string(&p->nd_ns_target));
297 if (vflag) {
298 #define NDSOLLEN 24
299 icmp6_opt_print((const u_char *)dp + NDSOLLEN,
300 icmp6len - NDSOLLEN);
301 }
302 }
303 break;
304 case ND_NEIGHBOR_ADVERT:
305 {
306 struct nd_neighbor_advert *p;
307
308 p = (struct nd_neighbor_advert *)dp;
309 TCHECK(p->nd_na_target);
310 printf("icmp6: neighbor adv: tgt is %s",
311 ip6addr_string(&p->nd_na_target));
312 if (vflag) {
313 #define ND_NA_FLAG_ALL \
314 (ND_NA_FLAG_ROUTER|ND_NA_FLAG_SOLICITED|ND_NA_FLAG_OVERRIDE)
315 /* we don't need ntohl() here. see advanced-api-04. */
316 if (p->nd_na_flags_reserved & ND_NA_FLAG_ALL) {
317 #undef ND_NA_FLAG_ALL
318 u_int32_t flags;
319
320 flags = p->nd_na_flags_reserved;
321 printf("(");
322 if (flags & ND_NA_FLAG_ROUTER)
323 printf("R");
324 if (flags & ND_NA_FLAG_SOLICITED)
325 printf("S");
326 if (flags & ND_NA_FLAG_OVERRIDE)
327 printf("O");
328 printf(")");
329 }
330 #define NDADVLEN 24
331 icmp6_opt_print((const u_char *)dp + NDADVLEN,
332 icmp6len - NDADVLEN);
333 #undef NDADVLEN
334 }
335 }
336 break;
337 case ND_REDIRECT:
338 #define RDR(i) ((struct nd_redirect *)(i))
339 TCHECK(RDR(dp)->nd_rd_dst);
340 printf("icmp6: redirect %s",
341 getname6((const u_char *)&RDR(dp)->nd_rd_dst));
342 printf(" to %s",
343 getname6((const u_char*)&RDR(dp)->nd_rd_target));
344 #define REDIRECTLEN 40
345 if (vflag) {
346 icmp6_opt_print((const u_char *)dp + REDIRECTLEN,
347 icmp6len - REDIRECTLEN);
348 }
349 break;
350 #undef REDIRECTLEN
351 #undef RDR
352 case ICMP6_ROUTER_RENUMBERING:
353 icmp6_rrenum_print(icmp6len, bp, ep);
354 break;
355 case ICMP6_NI_QUERY:
356 case ICMP6_NI_REPLY:
357 icmp6_nodeinfo_print(icmp6len, bp, ep);
358 break;
359 default:
360 printf("icmp6: type-#%d", dp->icmp6_type);
361 break;
362 }
363 return;
364 trunc:
365 fputs("[|icmp6]", stdout);
366 }
367
368 static struct udphdr *
369 get_upperlayer(u_char *bp, int *prot)
370 {
371 const u_char *ep;
372 struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
373 struct udphdr *uh;
374 struct ip6_hbh *hbh;
375 struct ip6_frag *fragh;
376 struct ah *ah;
377 int nh, hlen;
378
379 /* 'ep' points to the end of available data. */
380 ep = snapend;
381
382 if (TTEST(ip6->ip6_nxt) == 0)
383 return NULL;
384
385 nh = ip6->ip6_nxt;
386 hlen = sizeof(struct ip6_hdr);
387
388 while (bp < snapend) {
389 bp += hlen;
390
391 switch(nh) {
392 case IPPROTO_UDP:
393 case IPPROTO_TCP:
394 uh = (struct udphdr *)bp;
395 if (TTEST(uh->uh_dport)) {
396 *prot = nh;
397 return(uh);
398 }
399 else
400 return(NULL);
401 /* NOTREACHED */
402
403 case IPPROTO_HOPOPTS:
404 case IPPROTO_DSTOPTS:
405 case IPPROTO_ROUTING:
406 hbh = (struct ip6_hbh *)bp;
407 if (TTEST(hbh->ip6h_len) == 0)
408 return(NULL);
409 nh = hbh->ip6h_nxt;
410 hlen = (hbh->ip6h_len + 1) << 3;
411 break;
412
413 case IPPROTO_FRAGMENT: /* this should be odd, but try anyway */
414 fragh = (struct ip6_frag *)bp;
415 if (TTEST(fragh->ip6f_offlg) == 0)
416 return(NULL);
417 /* fragments with non-zero offset are meaningless */
418 if ((fragh->ip6f_offlg & IP6F_OFF_MASK) != 0)
419 return(NULL);
420 nh = fragh->ip6f_nxt;
421 hlen = sizeof(struct ip6_frag);
422 break;
423
424 case IPPROTO_AH:
425 ah = (struct ah *)bp;
426 if (TTEST(ah->ah_len) == 0)
427 return(NULL);
428 nh = ah->ah_nxt;
429 hlen = (ah->ah_len + 2) << 2;
430 break;
431
432 default: /* unknown or undecodable header */
433 *prot = nh; /* meaningless, but set here anyway */
434 return(NULL);
435 }
436 }
437
438 return(NULL); /* should be notreached, though */
439 }
440
441 void
442 icmp6_opt_print(const u_char *bp, int resid)
443 {
444 const struct nd_opt_hdr *op;
445 const struct nd_opt_hdr *opl; /* why there's no struct? */
446 const struct nd_opt_prefix_info *opp;
447 const struct icmp6_opts_redirect *opr;
448 const struct nd_opt_mtu *opm;
449 const struct nd_opt_advinterval *opa;
450 const struct nd_opt_route_info *opri;
451 const u_char *cp, *ep;
452 struct in6_addr in6, *in6p;
453 size_t l;
454
455 #define ECHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) return
456
457 cp = bp;
458 /* 'ep' points to the end of available data. */
459 ep = snapend;
460
461 while (cp < ep) {
462 op = (struct nd_opt_hdr *)cp;
463
464 ECHECK(op->nd_opt_len);
465 if (resid <= 0)
466 return;
467 if (op->nd_opt_len == 0)
468 goto trunc;
469 if (cp + (op->nd_opt_len << 3) > ep)
470 goto trunc;
471
472 switch (op->nd_opt_type) {
473 case ND_OPT_SOURCE_LINKADDR:
474 opl = (struct nd_opt_hdr *)op;
475 printf("(src lladdr: ");
476 l = (op->nd_opt_len << 3) - 2;
477 print_lladdr(cp + 2, l);
478 /*(*/
479 printf(")");
480 break;
481 case ND_OPT_TARGET_LINKADDR:
482 opl = (struct nd_opt_hdr *)op;
483 printf("(tgt lladdr: ");
484 l = (op->nd_opt_len << 3) - 2;
485 print_lladdr(cp + 2, l);
486 /*(*/
487 printf(")");
488 break;
489 case ND_OPT_PREFIX_INFORMATION:
490 opp = (struct nd_opt_prefix_info *)op;
491 TCHECK(opp->nd_opt_pi_prefix);
492 printf("(prefix info: "); /*)*/
493 if (op->nd_opt_len != 4) {
494 printf("badlen");
495 /*(*/
496 printf(")");
497 break;
498 }
499 if (opp->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_ONLINK)
500 printf("L");
501 if (opp->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_AUTO)
502 printf("A");
503 if (opp->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_ROUTER)
504 printf("R");
505 if (opp->nd_opt_pi_flags_reserved)
506 printf(" ");
507 printf("valid_ltime=%s,",
508 get_lifetime((u_int32_t)ntohl(opp->nd_opt_pi_valid_time)));
509 printf("preferred_ltime=%s,",
510 get_lifetime((u_int32_t)ntohl(opp->nd_opt_pi_preferred_time)));
511 printf("prefix=%s/%d",
512 ip6addr_string(&opp->nd_opt_pi_prefix),
513 opp->nd_opt_pi_prefix_len);
514 if (opp->nd_opt_pi_len != 4)
515 printf("!");
516 /*(*/
517 printf(")");
518 break;
519 case ND_OPT_REDIRECTED_HEADER:
520 opr = (struct icmp6_opts_redirect *)op;
521 printf("(redirect)");
522 /* xxx */
523 break;
524 case ND_OPT_MTU:
525 opm = (struct nd_opt_mtu *)op;
526 TCHECK(opm->nd_opt_mtu_mtu);
527 printf("(mtu:"); /*)*/
528 if (op->nd_opt_len != 1) {
529 printf("badlen");
530 /*(*/
531 printf(")");
532 break;
533 }
534 printf(" mtu=%u", (u_int32_t)ntohl(opm->nd_opt_mtu_mtu));
535 if (opm->nd_opt_mtu_len != 1)
536 printf("!");
537 printf(")");
538 break;
539 case ND_OPT_ADVINTERVAL:
540 opa = (struct nd_opt_advinterval *)op;
541 TCHECK(opa->nd_opt_adv_interval);
542 printf("(advint:"); /*)*/
543 printf(" advint=%u",
544 (u_int32_t)ntohl(opa->nd_opt_adv_interval));
545 /*(*/
546 printf(")");
547 break;
548 case ND_OPT_ROUTE_INFO:
549 opri = (struct nd_opt_route_info *)op;
550 TCHECK(opri->nd_opt_rti_lifetime);
551 memset(&in6, 0, sizeof(in6));
552 in6p = (struct in6_addr *)(opri + 1);
553 switch (op->nd_opt_len) {
554 case 1:
555 break;
556 case 2:
557 TCHECK2(*in6p, 8);
558 memcpy(&in6, opri + 1, 8);
559 break;
560 case 3:
561 TCHECK(*in6p);
562 memcpy(&in6, opri + 1, sizeof(in6));
563 break;
564 default:
565 goto trunc;
566 }
567 printf("(rtinfo:"); /*)*/
568 printf(" %s/%u", ip6addr_string(&in6),
569 opri->nd_opt_rti_prefixlen);
570 printf(", pref=%s", get_rtpref(opri->nd_opt_rti_flags));
571 printf(", lifetime=%s",
572 get_lifetime((u_int32_t)ntohl(opri->nd_opt_rti_lifetime)));
573 /*(*/
574 printf(")");
575 break;
576 default:
577 printf("(unknwon opt_type=%d, opt_len=%d)",
578 op->nd_opt_type, op->nd_opt_len);
579 break;
580 }
581
582 cp += op->nd_opt_len << 3;
583 resid -= op->nd_opt_len << 3;
584 }
585 return;
586
587 trunc:
588 fputs("[ndp opt]", stdout);
589 return;
590 #undef ECHECK
591 }
592
593 void
594 mld6_print(const u_char *bp)
595 {
596 struct mld6_hdr *mp = (struct mld6_hdr *)bp;
597 const u_char *ep;
598
599 /* 'ep' points to the end of available data. */
600 ep = snapend;
601
602 if ((u_char *)mp + sizeof(*mp) > ep)
603 return;
604
605 printf("max resp delay: %d ", ntohs(mp->mld6_maxdelay));
606 printf("addr: %s", ip6addr_string(&mp->mld6_addr));
607 }
608
609 static void
610 dnsname_print(const u_char *cp, const u_char *ep)
611 {
612 int i;
613
614 /* DNS name decoding - no decompression */
615 printf(", \"");
616 while (cp < ep) {
617 i = *cp++;
618 if (i) {
619 if (i > ep - cp) {
620 printf("???");
621 break;
622 }
623 while (i-- && cp < ep) {
624 safeputchar(*cp);
625 cp++;
626 }
627 if (cp + 1 < ep && *cp)
628 printf(".");
629 } else {
630 if (cp == ep) {
631 /* FQDN */
632 printf(".");
633 } else if (cp + 1 == ep && *cp == '\0') {
634 /* truncated */
635 } else {
636 /* invalid */
637 printf("???");
638 }
639 break;
640 }
641 }
642 printf("\"");
643 }
644
645 void
646 icmp6_nodeinfo_print(int icmp6len, const u_char *bp, const u_char *ep)
647 {
648 struct icmp6_nodeinfo *ni6;
649 struct icmp6_hdr *dp;
650 const u_char *cp;
651 int siz, i;
652 int needcomma;
653
654 dp = (struct icmp6_hdr *)bp;
655 ni6 = (struct icmp6_nodeinfo *)bp;
656 siz = ep - bp;
657
658 switch (ni6->ni_type) {
659 case ICMP6_NI_QUERY:
660 if (siz == sizeof(*dp) + 4) {
661 /* KAME who-are-you */
662 printf("icmp6: who-are-you request");
663 break;
664 }
665 printf("icmp6: node information query");
666
667 TCHECK2(*dp, sizeof(*ni6));
668 ni6 = (struct icmp6_nodeinfo *)dp;
669 printf(" ("); /*)*/
670 switch (ntohs(ni6->ni_qtype)) {
671 case NI_QTYPE_NOOP:
672 printf("noop");
673 break;
674 case NI_QTYPE_SUPTYPES:
675 printf("supported qtypes");
676 i = ntohs(ni6->ni_flags);
677 if (i)
678 printf(" [%s]", (i & 0x01) ? "C" : "");
679 break;
680 break;
681 case NI_QTYPE_FQDN:
682 printf("DNS name");
683 break;
684 case NI_QTYPE_NODEADDR:
685 printf("node addresses");
686 i = ni6->ni_flags;
687 if (!i)
688 break;
689 /* NI_NODEADDR_FLAG_TRUNCATE undefined for query */
690 printf(" [%s%s%s%s%s%s]",
691 (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
692 (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
693 (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
694 (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
695 (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
696 (i & NI_NODEADDR_FLAG_ALL) ? "A" : "");
697 break;
698 default:
699 printf("unknown");
700 break;
701 }
702
703 if (ni6->ni_qtype == NI_QTYPE_NOOP ||
704 ni6->ni_qtype == NI_QTYPE_SUPTYPES) {
705 if (siz != sizeof(*ni6))
706 if (vflag)
707 printf(", invalid len");
708 /*(*/
709 printf(")");
710 break;
711 }
712
713
714 /* XXX backward compat, icmp-name-lookup-03 */
715 if (siz == sizeof(*ni6)) {
716 printf(", 03 draft");
717 /*(*/
718 printf(")");
719 break;
720 }
721
722 switch (ni6->ni_code) {
723 case ICMP6_NI_SUBJ_IPV6:
724 if (!TTEST2(*dp,
725 sizeof(*ni6) + sizeof(struct in6_addr)))
726 break;
727 if (siz != sizeof(*ni6) + sizeof(struct in6_addr)) {
728 if (vflag)
729 printf(", invalid subject len");
730 break;
731 }
732 printf(", subject=%s",
733 getname6((const u_char *)(ni6 + 1)));
734 break;
735 case ICMP6_NI_SUBJ_FQDN:
736 printf(", subject=DNS name");
737 cp = (const u_char *)(ni6 + 1);
738 if (cp[0] == ep - cp - 1) {
739 /* icmp-name-lookup-03, pascal string */
740 if (vflag)
741 printf(", 03 draft");
742 cp++;
743 printf(", \"");
744 while (cp < ep) {
745 safeputchar(*cp);
746 cp++;
747 }
748 printf("\"");
749 } else
750 dnsname_print(cp, ep);
751 break;
752 case ICMP6_NI_SUBJ_IPV4:
753 if (!TTEST2(*dp, sizeof(*ni6) + sizeof(struct in_addr)))
754 break;
755 if (siz != sizeof(*ni6) + sizeof(struct in_addr)) {
756 if (vflag)
757 printf(", invalid subject len");
758 break;
759 }
760 printf(", subject=%s",
761 getname((const u_char *)(ni6 + 1)));
762 break;
763 default:
764 printf(", unknown subject");
765 break;
766 }
767
768 /*(*/
769 printf(")");
770 break;
771
772 case ICMP6_NI_REPLY:
773 if (icmp6len > siz) {
774 printf("[|icmp6: node information reply]");
775 break;
776 }
777
778 needcomma = 0;
779
780 ni6 = (struct icmp6_nodeinfo *)dp;
781 printf("icmp6: node information reply");
782 printf(" ("); /*)*/
783 switch (ni6->ni_code) {
784 case ICMP6_NI_SUCCESS:
785 if (vflag) {
786 printf("success");
787 needcomma++;
788 }
789 break;
790 case ICMP6_NI_REFUSED:
791 printf("refused");
792 needcomma++;
793 if (siz != sizeof(*ni6))
794 if (vflag)
795 printf(", invalid length");
796 break;
797 case ICMP6_NI_UNKNOWN:
798 printf("unknown");
799 needcomma++;
800 if (siz != sizeof(*ni6))
801 if (vflag)
802 printf(", invalid length");
803 break;
804 }
805
806 if (ni6->ni_code != ICMP6_NI_SUCCESS) {
807 /*(*/
808 printf(")");
809 break;
810 }
811
812 switch (ntohs(ni6->ni_qtype)) {
813 case NI_QTYPE_NOOP:
814 if (needcomma)
815 printf(", ");
816 printf("noop");
817 if (siz != sizeof(*ni6))
818 if (vflag)
819 printf(", invalid length");
820 break;
821 case NI_QTYPE_SUPTYPES:
822 if (needcomma)
823 printf(", ");
824 printf("supported qtypes");
825 i = ntohs(ni6->ni_flags);
826 if (i)
827 printf(" [%s]", (i & 0x01) ? "C" : "");
828 break;
829 case NI_QTYPE_FQDN:
830 if (needcomma)
831 printf(", ");
832 printf("DNS name");
833 cp = (const u_char *)(ni6 + 1) + 4;
834 if (cp[0] == ep - cp - 1) {
835 /* icmp-name-lookup-03, pascal string */
836 if (vflag)
837 printf(", 03 draft");
838 cp++;
839 printf(", \"");
840 while (cp < ep) {
841 safeputchar(*cp);
842 cp++;
843 }
844 printf("\"");
845 } else
846 dnsname_print(cp, ep);
847 if ((ntohs(ni6->ni_flags) & 0x01) != 0)
848 printf(" [TTL=%u]", *(u_int32_t *)(ni6 + 1));
849 break;
850 case NI_QTYPE_NODEADDR:
851 if (needcomma)
852 printf(", ");
853 printf("node addresses");
854 i = sizeof(*ni6);
855 while (i < siz) {
856 if (i + sizeof(struct in6_addr) + sizeof(int32_t) > siz)
857 break;
858 printf(" %s", getname6(bp + i));
859 i += sizeof(struct in6_addr);
860 printf("(%d)", (int32_t)ntohl(*(int32_t *)(bp + i)));
861 i += sizeof(int32_t);
862 }
863 i = ni6->ni_flags;
864 if (!i)
865 break;
866 printf(" [%s%s%s%s%s%s%s]",
867 (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
868 (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
869 (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
870 (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
871 (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
872 (i & NI_NODEADDR_FLAG_ALL) ? "A" : "",
873 (i & NI_NODEADDR_FLAG_TRUNCATE) ? "T" : "");
874 break;
875 default:
876 if (needcomma)
877 printf(", ");
878 printf("unknown");
879 break;
880 }
881
882 /*(*/
883 printf(")");
884 break;
885 }
886 return;
887
888 trunc:
889 fputs("[|icmp6]", stdout);
890 }
891
892 void
893 icmp6_rrenum_print(int icmp6len, const u_char *bp, const u_char *ep)
894 {
895 struct icmp6_router_renum *rr6;
896 struct icmp6_hdr *dp;
897 size_t siz;
898 const char *cp;
899 struct rr_pco_match *match;
900 struct rr_pco_use *use;
901 char hbuf[NI_MAXHOST];
902 int n;
903
904 dp = (struct icmp6_hdr *)bp;
905 rr6 = (struct icmp6_router_renum *)bp;
906 siz = ep - bp;
907 cp = (const char *)(rr6 + 1);
908
909 TCHECK(rr6->rr_reserved);
910 switch (rr6->rr_code) {
911 case ICMP6_ROUTER_RENUMBERING_COMMAND:
912 printf("router renum: command");
913 break;
914 case ICMP6_ROUTER_RENUMBERING_RESULT:
915 printf("router renum: result");
916 break;
917 case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET:
918 printf("router renum: sequence number reset");
919 break;
920 default:
921 printf("router renum: code-#%d", rr6->rr_code);
922 break;
923 }
924
925 printf(", seq=%u", (u_int32_t)ntohl(rr6->rr_seqnum));
926
927 if (vflag) {
928 #define F(x, y) ((rr6->rr_flags) & (x) ? (y) : "")
929 printf("["); /*]*/
930 if (rr6->rr_flags) {
931 printf("%s%s%s%s%s,", F(ICMP6_RR_FLAGS_TEST, "T"),
932 F(ICMP6_RR_FLAGS_REQRESULT, "R"),
933 F(ICMP6_RR_FLAGS_FORCEAPPLY, "A"),
934 F(ICMP6_RR_FLAGS_SPECSITE, "S"),
935 F(ICMP6_RR_FLAGS_PREVDONE, "P"));
936 }
937 printf("seg=%u,", rr6->rr_segnum);
938 printf("maxdelay=%u", rr6->rr_maxdelay);
939 if (rr6->rr_reserved)
940 printf("rsvd=0x%x", (u_int16_t)ntohs(rr6->rr_reserved));
941 /*[*/
942 printf("]");
943 #undef F
944 }
945
946 if (rr6->rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND) {
947 match = (struct rr_pco_match *)cp;
948 cp = (const char *)(match + 1);
949
950 TCHECK(match->rpm_prefix);
951
952 if (vflag > 1)
953 printf("\n\t");
954 else
955 printf(" ");
956 printf("match("); /*)*/
957 switch (match->rpm_code) {
958 case RPM_PCO_ADD: printf("add"); break;
959 case RPM_PCO_CHANGE: printf("change"); break;
960 case RPM_PCO_SETGLOBAL: printf("setglobal"); break;
961 default: printf("#%u", match->rpm_code); break;
962 }
963
964 if (vflag) {
965 printf(",ord=%u", match->rpm_ordinal);
966 printf(",min=%u", match->rpm_minlen);
967 printf(",max=%u", match->rpm_maxlen);
968 }
969 if (inet_ntop(AF_INET6, &match->rpm_prefix, hbuf, sizeof(hbuf)))
970 printf(",%s/%u", hbuf, match->rpm_matchlen);
971 else
972 printf(",?/%u", match->rpm_matchlen);
973 /*(*/
974 printf(")");
975
976 n = match->rpm_len - 3;
977 if (n % 4)
978 goto trunc;
979 n /= 4;
980 while (n-- > 0) {
981 use = (struct rr_pco_use *)cp;
982 cp = (const char *)(use + 1);
983
984 TCHECK(use->rpu_prefix);
985
986 if (vflag > 1)
987 printf("\n\t");
988 else
989 printf(" ");
990 printf("use("); /*)*/
991 if (use->rpu_flags) {
992 #define F(x, y) ((use->rpu_flags) & (x) ? (y) : "")
993 printf("%s%s,",
994 F(ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME, "V"),
995 F(ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME, "P"));
996 #undef F
997 }
998 if (vflag) {
999 printf("mask=0x%x,", use->rpu_ramask);
1000 printf("raflags=0x%x,", use->rpu_raflags);
1001 if (~use->rpu_vltime == 0)
1002 printf("vltime=infty,");
1003 else
1004 printf("vltime=%u,",
1005 (u_int32_t)ntohl(use->rpu_vltime));
1006 if (~use->rpu_pltime == 0)
1007 printf("pltime=infty,");
1008 else
1009 printf("pltime=%u,",
1010 (u_int32_t)ntohl(use->rpu_pltime));
1011 }
1012 if (inet_ntop(AF_INET6, &use->rpu_prefix, hbuf,
1013 sizeof(hbuf)))
1014 printf("%s/%u/%u", hbuf, use->rpu_uselen,
1015 use->rpu_keeplen);
1016 else
1017 printf("?/%u/%u", use->rpu_uselen,
1018 use->rpu_keeplen);
1019 /*(*/
1020 printf(")");
1021 }
1022 }
1023
1024 return;
1025
1026 trunc:
1027 fputs("[|icmp6]", stdout);
1028 }
1029
1030 #endif /* INET6 */
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