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[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[] _U_ =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-icmp6.c,v 1.86 2008-02-05 19:36:13 guy Exp $";
25 #endif
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #ifdef INET6
32
33 #include <tcpdump-stdinc.h>
34
35 #include <stdio.h>
36 #include <string.h>
37
38 #include "interface.h"
39 #include "addrtoname.h"
40 #include "extract.h"
41
42 #include "ip6.h"
43 #include "icmp6.h"
44 #include "ipproto.h"
45
46 #include "udp.h"
47 #include "ah.h"
48
49 static const char *get_rtpref(u_int);
50 static const char *get_lifetime(u_int32_t);
51 static void print_lladdr(const u_char *, size_t);
52 static void icmp6_opt_print(const u_char *, int);
53 static void mld6_print(const u_char *);
54 static void mldv2_report_print(const u_char *, u_int);
55 static void mldv2_query_print(const u_char *, u_int);
56 static struct udphdr *get_upperlayer(u_char *, u_int *);
57 static void dnsname_print(const u_char *, const u_char *);
58 static void icmp6_nodeinfo_print(u_int, const u_char *, const u_char *);
59 static void icmp6_rrenum_print(const u_char *, const u_char *);
60
61 #ifndef abs
62 #define abs(a) ((0 < (a)) ? (a) : -(a))
63 #endif
64
65 /* inline the various RPL definitions */
66 #define ND_RPL_MESSAGE 0x9B
67
68 static const struct tok icmp6_type_values[] = {
69 { ICMP6_DST_UNREACH, "destination unreachable"},
70 { ICMP6_PACKET_TOO_BIG, "packet too big"},
71 { ICMP6_TIME_EXCEEDED, "time exceeded in-transit"},
72 { ICMP6_PARAM_PROB, "parameter problem"},
73 { ICMP6_ECHO_REQUEST, "echo request"},
74 { ICMP6_ECHO_REPLY, "echo reply"},
75 { MLD6_LISTENER_QUERY, "multicast listener query"},
76 { MLD6_LISTENER_REPORT, "multicast listener report"},
77 { MLD6_LISTENER_DONE, "multicast listener done"},
78 { ND_ROUTER_SOLICIT, "router solicitation"},
79 { ND_ROUTER_ADVERT, "router advertisement"},
80 { ND_NEIGHBOR_SOLICIT, "neighbor solicitation"},
81 { ND_NEIGHBOR_ADVERT, "neighbor advertisement"},
82 { ND_REDIRECT, "redirect"},
83 { ICMP6_ROUTER_RENUMBERING, "router renumbering"},
84 { IND_SOLICIT, "inverse neighbor solicitation"},
85 { IND_ADVERT, "inverse neighbor advertisement"},
86 { MLDV2_LISTENER_REPORT, "multicast listener report v2"},
87 { ICMP6_HADISCOV_REQUEST, "ha discovery request"},
88 { ICMP6_HADISCOV_REPLY, "ha discovery reply"},
89 { ICMP6_MOBILEPREFIX_SOLICIT, "mobile router solicitation"},
90 { ICMP6_MOBILEPREFIX_ADVERT, "mobile router advertisement"},
91 { ICMP6_WRUREQUEST, "who-are-you request"},
92 { ICMP6_WRUREPLY, "who-are-you reply"},
93 { ICMP6_NI_QUERY, "node information query"},
94 { ICMP6_NI_REPLY, "node information reply"},
95 { MLD6_MTRACE, "mtrace message"},
96 { MLD6_MTRACE_RESP, "mtrace response"},
97 { ND_RPL_MESSAGE, "RPL"},
98 { 0, NULL }
99 };
100
101 static const struct tok icmp6_dst_unreach_code_values[] = {
102 { ICMP6_DST_UNREACH_NOROUTE, "unreachable route" },
103 { ICMP6_DST_UNREACH_ADMIN, " unreachable prohibited"},
104 { ICMP6_DST_UNREACH_BEYONDSCOPE, "beyond scope"},
105 { ICMP6_DST_UNREACH_ADDR, "unreachable address"},
106 { ICMP6_DST_UNREACH_NOPORT, "unreachable port"},
107 { 0, NULL }
108 };
109
110 static const struct tok icmp6_opt_pi_flag_values[] = {
111 { ND_OPT_PI_FLAG_ONLINK, "onlink" },
112 { ND_OPT_PI_FLAG_AUTO, "auto" },
113 { ND_OPT_PI_FLAG_ROUTER, "router" },
114 { 0, NULL }
115 };
116
117 static const struct tok icmp6_opt_ra_flag_values[] = {
118 { ND_RA_FLAG_MANAGED, "managed" },
119 { ND_RA_FLAG_OTHER, "other stateful"},
120 { ND_RA_FLAG_HOME_AGENT, "home agent"},
121 { 0, NULL }
122 };
123
124 static const struct tok icmp6_nd_na_flag_values[] = {
125 { ND_NA_FLAG_ROUTER, "router" },
126 { ND_NA_FLAG_SOLICITED, "solicited" },
127 { ND_NA_FLAG_OVERRIDE, "override" },
128 { 0, NULL }
129 };
130
131
132 static const struct tok icmp6_opt_values[] = {
133 { ND_OPT_SOURCE_LINKADDR, "source link-address"},
134 { ND_OPT_TARGET_LINKADDR, "destination link-address"},
135 { ND_OPT_PREFIX_INFORMATION, "prefix info"},
136 { ND_OPT_REDIRECTED_HEADER, "redirected header"},
137 { ND_OPT_MTU, "mtu"},
138 { ND_OPT_RDNSS, "rdnss"},
139 { ND_OPT_DNSSL, "dnssl"},
140 { ND_OPT_ADVINTERVAL, "advertisement interval"},
141 { ND_OPT_HOMEAGENT_INFO, "homeagent information"},
142 { ND_OPT_ROUTE_INFO, "route info"},
143 { 0, NULL }
144 };
145
146 /* mldv2 report types */
147 static const struct tok mldv2report2str[] = {
148 { 1, "is_in" },
149 { 2, "is_ex" },
150 { 3, "to_in" },
151 { 4, "to_ex" },
152 { 5, "allow" },
153 { 6, "block" },
154 { 0, NULL }
155 };
156
157 static const char *
158 get_rtpref(u_int v)
159 {
160 static const char *rtpref_str[] = {
161 "medium", /* 00 */
162 "high", /* 01 */
163 "rsv", /* 10 */
164 "low" /* 11 */
165 };
166
167 return rtpref_str[((v & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff];
168 }
169
170 static const char *
171 get_lifetime(u_int32_t v)
172 {
173 static char buf[20];
174
175 if (v == (u_int32_t)~0UL)
176 return "infinity";
177 else {
178 snprintf(buf, sizeof(buf), "%us", v);
179 return buf;
180 }
181 }
182
183 static void
184 print_lladdr(const u_int8_t *p, size_t l)
185 {
186 const u_int8_t *ep, *q;
187
188 q = p;
189 ep = p + l;
190 while (l > 0 && q < ep) {
191 if (q > p)
192 printf(":");
193 printf("%02x", *q++);
194 l--;
195 }
196 }
197
198 static int icmp6_cksum(const struct ip6_hdr *ip6, const struct icmp6_hdr *icp,
199 u_int len)
200 {
201 return (nextproto6_cksum(ip6, (const u_int8_t *)(void *)icp, len,
202 IPPROTO_ICMPV6));
203 }
204
205 enum ND_RPL_CODE {
206 ND_RPL_DIS =0x00,
207 ND_RPL_DIO =0x01,
208 ND_RPL_DAO =0x02,
209 ND_RPL_DAO_ACK=0x03,
210 ND_RPL_SDIS =0x80,
211 ND_RPL_SDIO =0x81,
212 ND_RPL_SDAO =0x82,
213 ND_RPL_SDAO_ACK=0x83,
214 ND_RPL_SCC =0x8A,
215 };
216
217 enum ND_RPL_DIO_FLAGS {
218 ND_RPL_DIO_GROUNDED = 0x80,
219 ND_RPL_DIO_DATRIG = 0x40,
220 ND_RPL_DIO_DASUPPORT= 0x20,
221 ND_RPL_DIO_RES4 = 0x10,
222 ND_RPL_DIO_RES3 = 0x08,
223 ND_RPL_DIO_PRF_MASK = 0x07, /* 3-bit preference */
224 };
225
226 struct nd_rpl_dio {
227 u_int8_t rpl_flags;
228 u_int8_t rpl_seq;
229 u_int8_t rpl_instanceid;
230 u_int8_t rpl_dagrank;
231 u_int8_t rpl_dagid[16];
232 };
233
234 static void
235 rpl_print(netdissect_options *ndo,
236 const struct icmp6_hdr *hdr,
237 const u_char *bp, u_int length _U_)
238 {
239 struct nd_rpl_dio *dio = (struct nd_rpl_dio *)bp;
240 int secured = hdr->icmp6_code & 0x80;
241 int basecode= hdr->icmp6_code & 0x7f;
242
243 ND_TCHECK(dio->rpl_dagid);
244
245 if(secured) {
246 ND_PRINT((ndo, ", (SEC)"));
247 } else {
248 ND_PRINT((ndo, ", (CLR)"));
249 }
250
251 switch(basecode) {
252 case ND_RPL_DIS:
253 ND_PRINT((ndo, "DODAG Information Solicitation"));
254 if(ndo->ndo_vflag) {
255 }
256 break;
257 case ND_RPL_DIO:
258 ND_PRINT((ndo, "DODAG Information Object"));
259 if(ndo->ndo_vflag) {
260 char dagid[65];
261 char *d = dagid;
262 int i;
263 for(i=0;i<16;i++) {
264 if(isprint(dio->rpl_dagid[i])) {
265 *d++ = dio->rpl_dagid[i];
266 } else {
267 int cnt=snprintf(d,4,"0x%02x",
268 dio->rpl_dagid[i]);
269 d += cnt;
270 }
271 }
272 *d++ = '\0';
273 ND_PRINT((ndo, " [seq:%u,instance:%u,rank:%u,dagid:%s]",
274 dio->rpl_seq,
275 dio->rpl_instanceid,
276 dio->rpl_dagrank,
277 dagid));
278 }
279 break;
280 case ND_RPL_DAO:
281 ND_PRINT((ndo, "Destination Advertisement Object"));
282 if(ndo->ndo_vflag) {
283 }
284 break;
285 case ND_RPL_DAO_ACK:
286 ND_PRINT((ndo, "Destination Advertisement Object Ack"));
287 if(ndo->ndo_vflag) {
288 }
289 break;
290 default:
291 ND_PRINT((ndo, "RPL message, unknown code %u",hdr->icmp6_code));
292 break;
293 }
294 return;
295 trunc:
296 ND_PRINT((ndo," [|truncated]"));
297 return;
298
299 }
300
301
302 void
303 icmp6_print(netdissect_options *ndo,
304 const u_char *bp, u_int length, const u_char *bp2, int fragmented)
305 {
306 const struct icmp6_hdr *dp;
307 const struct ip6_hdr *ip;
308 const struct ip6_hdr *oip;
309 const struct udphdr *ouh;
310 int dport;
311 const u_char *ep;
312 u_int prot;
313
314 dp = (struct icmp6_hdr *)bp;
315 ip = (struct ip6_hdr *)bp2;
316 oip = (struct ip6_hdr *)(dp + 1);
317 /* 'ep' points to the end of available data. */
318 ep = snapend;
319
320 TCHECK(dp->icmp6_cksum);
321
322 if (vflag && !fragmented) {
323 u_int16_t sum, udp_sum;
324
325 if (TTEST2(bp[0], length)) {
326 udp_sum = EXTRACT_16BITS(&dp->icmp6_cksum);
327 sum = icmp6_cksum(ip, dp, length);
328 if (sum != 0)
329 (void)printf("[bad icmp6 cksum 0x%04x -> 0x%04x!] ",
330 udp_sum,
331 in_cksum_shouldbe(udp_sum, sum));
332 else
333 (void)printf("[icmp6 sum ok] ");
334 }
335 }
336
337 printf("ICMP6, %s", tok2str(icmp6_type_values,"unknown icmp6 type (%u)",dp->icmp6_type));
338
339 /* display cosmetics: print the packet length for printer that use the vflag now */
340 if (vflag && (dp->icmp6_type == ND_ROUTER_SOLICIT ||
341 dp->icmp6_type == ND_ROUTER_ADVERT ||
342 dp->icmp6_type == ND_NEIGHBOR_ADVERT ||
343 dp->icmp6_type == ND_NEIGHBOR_SOLICIT ||
344 dp->icmp6_type == ND_REDIRECT ||
345 dp->icmp6_type == ICMP6_HADISCOV_REPLY ||
346 dp->icmp6_type == ICMP6_MOBILEPREFIX_ADVERT ))
347 printf(", length %u", length);
348
349 switch (dp->icmp6_type) {
350 case ICMP6_DST_UNREACH:
351 TCHECK(oip->ip6_dst);
352 printf(", %s", tok2str(icmp6_dst_unreach_code_values,"unknown unreach code (%u)",dp->icmp6_code));
353 switch (dp->icmp6_code) {
354
355 case ICMP6_DST_UNREACH_NOROUTE: /* fall through */
356 case ICMP6_DST_UNREACH_ADMIN:
357 case ICMP6_DST_UNREACH_ADDR:
358 printf(" %s",ip6addr_string(&oip->ip6_dst));
359 break;
360 case ICMP6_DST_UNREACH_BEYONDSCOPE:
361 printf(" %s, source address %s",
362 ip6addr_string(&oip->ip6_dst),
363 ip6addr_string(&oip->ip6_src));
364 break;
365 case ICMP6_DST_UNREACH_NOPORT:
366 if ((ouh = get_upperlayer((u_char *)oip, &prot))
367 == NULL)
368 goto trunc;
369
370 dport = EXTRACT_16BITS(&ouh->uh_dport);
371 switch (prot) {
372 case IPPROTO_TCP:
373 printf(", %s tcp port %s",
374 ip6addr_string(&oip->ip6_dst),
375 tcpport_string(dport));
376 break;
377 case IPPROTO_UDP:
378 printf(", %s udp port %s",
379 ip6addr_string(&oip->ip6_dst),
380 udpport_string(dport));
381 break;
382 default:
383 printf(", %s protocol %d port %d unreachable",
384 ip6addr_string(&oip->ip6_dst),
385 oip->ip6_nxt, dport);
386 break;
387 }
388 break;
389 default:
390 if (vflag <= 1) {
391 print_unknown_data(bp,"\n\t",length);
392 return;
393 }
394 break;
395 }
396 break;
397 case ICMP6_PACKET_TOO_BIG:
398 TCHECK(dp->icmp6_mtu);
399 printf(", mtu %u", EXTRACT_32BITS(&dp->icmp6_mtu));
400 break;
401 case ICMP6_TIME_EXCEEDED:
402 TCHECK(oip->ip6_dst);
403 switch (dp->icmp6_code) {
404 case ICMP6_TIME_EXCEED_TRANSIT:
405 printf(" for %s",
406 ip6addr_string(&oip->ip6_dst));
407 break;
408 case ICMP6_TIME_EXCEED_REASSEMBLY:
409 printf(" (reassembly)");
410 break;
411 default:
412 printf(", unknown code (%u)", dp->icmp6_code);
413 break;
414 }
415 break;
416 case ICMP6_PARAM_PROB:
417 TCHECK(oip->ip6_dst);
418 switch (dp->icmp6_code) {
419 case ICMP6_PARAMPROB_HEADER:
420 printf(", erroneous - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
421 break;
422 case ICMP6_PARAMPROB_NEXTHEADER:
423 printf(", next header - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
424 break;
425 case ICMP6_PARAMPROB_OPTION:
426 printf(", option - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
427 break;
428 default:
429 printf(", code-#%d",
430 dp->icmp6_code);
431 break;
432 }
433 break;
434 case ICMP6_ECHO_REQUEST:
435 case ICMP6_ECHO_REPLY:
436 TCHECK(dp->icmp6_seq);
437 printf(", seq %u", EXTRACT_16BITS(&dp->icmp6_seq));
438 break;
439 case ICMP6_MEMBERSHIP_QUERY:
440 if (length == MLD_MINLEN) {
441 mld6_print((const u_char *)dp);
442 } else if (length >= MLDV2_MINLEN) {
443 printf(" v2");
444 mldv2_query_print((const u_char *)dp, length);
445 } else {
446 printf(" unknown-version (len %u) ", length);
447 }
448 break;
449 case ICMP6_MEMBERSHIP_REPORT:
450 mld6_print((const u_char *)dp);
451 break;
452 case ICMP6_MEMBERSHIP_REDUCTION:
453 mld6_print((const u_char *)dp);
454 break;
455 case ND_ROUTER_SOLICIT:
456 #define RTSOLLEN 8
457 if (vflag) {
458 icmp6_opt_print((const u_char *)dp + RTSOLLEN,
459 length - RTSOLLEN);
460 }
461 break;
462 case ND_ROUTER_ADVERT:
463 #define RTADVLEN 16
464 if (vflag) {
465 struct nd_router_advert *p;
466
467 p = (struct nd_router_advert *)dp;
468 TCHECK(p->nd_ra_retransmit);
469 printf("\n\thop limit %u, Flags [%s]" \
470 ", pref %s, router lifetime %us, reachable time %us, retrans time %us",
471 (u_int)p->nd_ra_curhoplimit,
472 bittok2str(icmp6_opt_ra_flag_values,"none",(p->nd_ra_flags_reserved)),
473 get_rtpref(p->nd_ra_flags_reserved),
474 EXTRACT_16BITS(&p->nd_ra_router_lifetime),
475 EXTRACT_32BITS(&p->nd_ra_reachable),
476 EXTRACT_32BITS(&p->nd_ra_retransmit));
477
478 icmp6_opt_print((const u_char *)dp + RTADVLEN,
479 length - RTADVLEN);
480 }
481 break;
482 case ND_NEIGHBOR_SOLICIT:
483 {
484 struct nd_neighbor_solicit *p;
485 p = (struct nd_neighbor_solicit *)dp;
486 TCHECK(p->nd_ns_target);
487 printf(", who has %s", ip6addr_string(&p->nd_ns_target));
488 if (vflag) {
489 #define NDSOLLEN 24
490 icmp6_opt_print((const u_char *)dp + NDSOLLEN,
491 length - NDSOLLEN);
492 }
493 }
494 break;
495 case ND_NEIGHBOR_ADVERT:
496 {
497 struct nd_neighbor_advert *p;
498
499 p = (struct nd_neighbor_advert *)dp;
500 TCHECK(p->nd_na_target);
501 printf(", tgt is %s",
502 ip6addr_string(&p->nd_na_target));
503 if (vflag) {
504 printf(", Flags [%s]",
505 bittok2str(icmp6_nd_na_flag_values,
506 "none",
507 EXTRACT_32BITS(&p->nd_na_flags_reserved)));
508 #define NDADVLEN 24
509 icmp6_opt_print((const u_char *)dp + NDADVLEN,
510 length - NDADVLEN);
511 #undef NDADVLEN
512 }
513 }
514 break;
515 case ND_REDIRECT:
516 #define RDR(i) ((struct nd_redirect *)(i))
517 TCHECK(RDR(dp)->nd_rd_dst);
518 printf(", %s", getname6((const u_char *)&RDR(dp)->nd_rd_dst));
519 TCHECK(RDR(dp)->nd_rd_target);
520 printf(" to %s",
521 getname6((const u_char*)&RDR(dp)->nd_rd_target));
522 #define REDIRECTLEN 40
523 if (vflag) {
524 icmp6_opt_print((const u_char *)dp + REDIRECTLEN,
525 length - REDIRECTLEN);
526 }
527 break;
528 #undef REDIRECTLEN
529 #undef RDR
530 case ICMP6_ROUTER_RENUMBERING:
531 icmp6_rrenum_print(bp, ep);
532 break;
533 case ICMP6_NI_QUERY:
534 case ICMP6_NI_REPLY:
535 icmp6_nodeinfo_print(length, bp, ep);
536 break;
537 case IND_SOLICIT:
538 case IND_ADVERT:
539 break;
540 case ICMP6_V2_MEMBERSHIP_REPORT:
541 mldv2_report_print((const u_char *) dp, length);
542 break;
543 case ICMP6_MOBILEPREFIX_SOLICIT: /* fall through */
544 case ICMP6_HADISCOV_REQUEST:
545 TCHECK(dp->icmp6_data16[0]);
546 printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
547 break;
548 case ICMP6_HADISCOV_REPLY:
549 if (vflag) {
550 struct in6_addr *in6;
551 u_char *cp;
552
553 TCHECK(dp->icmp6_data16[0]);
554 printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
555 cp = (u_char *)dp + length;
556 in6 = (struct in6_addr *)(dp + 1);
557 for (; (u_char *)in6 < cp; in6++) {
558 TCHECK(*in6);
559 printf(", %s", ip6addr_string(in6));
560 }
561 }
562 break;
563 case ICMP6_MOBILEPREFIX_ADVERT:
564 if (vflag) {
565 TCHECK(dp->icmp6_data16[0]);
566 printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
567 if (dp->icmp6_data16[1] & 0xc0)
568 printf(" ");
569 if (dp->icmp6_data16[1] & 0x80)
570 printf("M");
571 if (dp->icmp6_data16[1] & 0x40)
572 printf("O");
573 #define MPADVLEN 8
574 icmp6_opt_print((const u_char *)dp + MPADVLEN,
575 length - MPADVLEN);
576 }
577 break;
578 case ND_RPL_MESSAGE:
579 rpl_print(ndo, dp, &dp->icmp6_data8[0], length);
580 break;
581 default:
582 printf(", length %u", length);
583 if (vflag <= 1)
584 print_unknown_data(bp,"\n\t", length);
585 return;
586 }
587 if (!vflag)
588 printf(", length %u", length);
589 return;
590 trunc:
591 fputs("[|icmp6]", stdout);
592 }
593
594 static struct udphdr *
595 get_upperlayer(u_char *bp, u_int *prot)
596 {
597 const u_char *ep;
598 struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
599 struct udphdr *uh;
600 struct ip6_hbh *hbh;
601 struct ip6_frag *fragh;
602 struct ah *ah;
603 u_int nh;
604 int hlen;
605
606 /* 'ep' points to the end of available data. */
607 ep = snapend;
608
609 if (!TTEST(ip6->ip6_nxt))
610 return NULL;
611
612 nh = ip6->ip6_nxt;
613 hlen = sizeof(struct ip6_hdr);
614
615 while (bp < ep) {
616 bp += hlen;
617
618 switch(nh) {
619 case IPPROTO_UDP:
620 case IPPROTO_TCP:
621 uh = (struct udphdr *)bp;
622 if (TTEST(uh->uh_dport)) {
623 *prot = nh;
624 return(uh);
625 }
626 else
627 return(NULL);
628 /* NOTREACHED */
629
630 case IPPROTO_HOPOPTS:
631 case IPPROTO_DSTOPTS:
632 case IPPROTO_ROUTING:
633 hbh = (struct ip6_hbh *)bp;
634 if (!TTEST(hbh->ip6h_len))
635 return(NULL);
636 nh = hbh->ip6h_nxt;
637 hlen = (hbh->ip6h_len + 1) << 3;
638 break;
639
640 case IPPROTO_FRAGMENT: /* this should be odd, but try anyway */
641 fragh = (struct ip6_frag *)bp;
642 if (!TTEST(fragh->ip6f_offlg))
643 return(NULL);
644 /* fragments with non-zero offset are meaningless */
645 if ((EXTRACT_16BITS(&fragh->ip6f_offlg) & IP6F_OFF_MASK) != 0)
646 return(NULL);
647 nh = fragh->ip6f_nxt;
648 hlen = sizeof(struct ip6_frag);
649 break;
650
651 case IPPROTO_AH:
652 ah = (struct ah *)bp;
653 if (!TTEST(ah->ah_len))
654 return(NULL);
655 nh = ah->ah_nxt;
656 hlen = (ah->ah_len + 2) << 2;
657 break;
658
659 default: /* unknown or undecodable header */
660 *prot = nh; /* meaningless, but set here anyway */
661 return(NULL);
662 }
663 }
664
665 return(NULL); /* should be notreached, though */
666 }
667
668 static void
669 icmp6_opt_print(const u_char *bp, int resid)
670 {
671 const struct nd_opt_hdr *op;
672 const struct nd_opt_hdr *opl; /* why there's no struct? */
673 const struct nd_opt_prefix_info *opp;
674 const struct icmp6_opts_redirect *opr;
675 const struct nd_opt_mtu *opm;
676 const struct nd_opt_rdnss *oprd;
677 const struct nd_opt_dnssl *opds;
678 const struct nd_opt_advinterval *opa;
679 const struct nd_opt_homeagent_info *oph;
680 const struct nd_opt_route_info *opri;
681 const u_char *cp, *ep, *domp;
682 struct in6_addr in6, *in6p;
683 size_t l;
684 u_int i;
685
686 #define ECHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) return
687
688 cp = bp;
689 /* 'ep' points to the end of available data. */
690 ep = snapend;
691
692 while (cp < ep) {
693 op = (struct nd_opt_hdr *)cp;
694
695 ECHECK(op->nd_opt_len);
696 if (resid <= 0)
697 return;
698 if (op->nd_opt_len == 0)
699 goto trunc;
700 if (cp + (op->nd_opt_len << 3) > ep)
701 goto trunc;
702
703 printf("\n\t %s option (%u), length %u (%u): ",
704 tok2str(icmp6_opt_values, "unknown", op->nd_opt_type),
705 op->nd_opt_type,
706 op->nd_opt_len << 3,
707 op->nd_opt_len);
708
709 switch (op->nd_opt_type) {
710 case ND_OPT_SOURCE_LINKADDR:
711 opl = (struct nd_opt_hdr *)op;
712 l = (op->nd_opt_len << 3) - 2;
713 print_lladdr(cp + 2, l);
714 break;
715 case ND_OPT_TARGET_LINKADDR:
716 opl = (struct nd_opt_hdr *)op;
717 l = (op->nd_opt_len << 3) - 2;
718 print_lladdr(cp + 2, l);
719 break;
720 case ND_OPT_PREFIX_INFORMATION:
721 opp = (struct nd_opt_prefix_info *)op;
722 TCHECK(opp->nd_opt_pi_prefix);
723 printf("%s/%u%s, Flags [%s], valid time %s",
724 ip6addr_string(&opp->nd_opt_pi_prefix),
725 opp->nd_opt_pi_prefix_len,
726 (op->nd_opt_len != 4) ? "badlen" : "",
727 bittok2str(icmp6_opt_pi_flag_values, "none", opp->nd_opt_pi_flags_reserved),
728 get_lifetime(EXTRACT_32BITS(&opp->nd_opt_pi_valid_time)));
729 printf(", pref. time %s", get_lifetime(EXTRACT_32BITS(&opp->nd_opt_pi_preferred_time)));
730 break;
731 case ND_OPT_REDIRECTED_HEADER:
732 opr = (struct icmp6_opts_redirect *)op;
733 print_unknown_data(bp,"\n\t ",op->nd_opt_len<<3);
734 /* xxx */
735 break;
736 case ND_OPT_MTU:
737 opm = (struct nd_opt_mtu *)op;
738 TCHECK(opm->nd_opt_mtu_mtu);
739 printf(" %u%s",
740 EXTRACT_32BITS(&opm->nd_opt_mtu_mtu),
741 (op->nd_opt_len != 1) ? "bad option length" : "" );
742 break;
743 case ND_OPT_RDNSS:
744 oprd = (struct nd_opt_rdnss *)op;
745 l = (op->nd_opt_len - 1) / 2;
746 printf(" lifetime %us,",
747 EXTRACT_32BITS(&oprd->nd_opt_rdnss_lifetime));
748 for (i = 0; i < l; i++) {
749 TCHECK(oprd->nd_opt_rdnss_addr[i]);
750 printf(" addr: %s",
751 ip6addr_string(&oprd->nd_opt_rdnss_addr[i]));
752 }
753 break;
754 case ND_OPT_DNSSL:
755 opds = (struct nd_opt_dnssl *)op;
756 printf(" lifetime %us, domain(s):",
757 EXTRACT_32BITS(&opds->nd_opt_dnssl_lifetime));
758 domp = cp + 8; /* domain names, variable-sized, RFC1035-encoded */
759 while (domp < cp + (op->nd_opt_len << 3) && *domp != '\0')
760 {
761 printf (" ");
762 if ((domp = ns_nprint (domp, bp)) == NULL)
763 goto trunc;
764 }
765 break;
766 case ND_OPT_ADVINTERVAL:
767 opa = (struct nd_opt_advinterval *)op;
768 TCHECK(opa->nd_opt_adv_interval);
769 printf(" %ums", EXTRACT_32BITS(&opa->nd_opt_adv_interval));
770 break;
771 case ND_OPT_HOMEAGENT_INFO:
772 oph = (struct nd_opt_homeagent_info *)op;
773 TCHECK(oph->nd_opt_hai_lifetime);
774 printf(" preference %u, lifetime %u",
775 EXTRACT_16BITS(&oph->nd_opt_hai_preference),
776 EXTRACT_16BITS(&oph->nd_opt_hai_lifetime));
777 break;
778 case ND_OPT_ROUTE_INFO:
779 opri = (struct nd_opt_route_info *)op;
780 TCHECK(opri->nd_opt_rti_lifetime);
781 memset(&in6, 0, sizeof(in6));
782 in6p = (struct in6_addr *)(opri + 1);
783 switch (op->nd_opt_len) {
784 case 1:
785 break;
786 case 2:
787 TCHECK2(*in6p, 8);
788 memcpy(&in6, opri + 1, 8);
789 break;
790 case 3:
791 TCHECK(*in6p);
792 memcpy(&in6, opri + 1, sizeof(in6));
793 break;
794 default:
795 goto trunc;
796 }
797 printf(" %s/%u", ip6addr_string(&in6),
798 opri->nd_opt_rti_prefixlen);
799 printf(", pref=%s", get_rtpref(opri->nd_opt_rti_flags));
800 printf(", lifetime=%s",
801 get_lifetime(EXTRACT_32BITS(&opri->nd_opt_rti_lifetime)));
802 break;
803 default:
804 if (vflag <= 1) {
805 print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
806 return;
807 }
808 break;
809 }
810 /* do we want to see an additional hexdump ? */
811 if (vflag> 1)
812 print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
813
814 cp += op->nd_opt_len << 3;
815 resid -= op->nd_opt_len << 3;
816 }
817 return;
818
819 trunc:
820 fputs("[ndp opt]", stdout);
821 return;
822 #undef ECHECK
823 }
824
825 static void
826 mld6_print(const u_char *bp)
827 {
828 struct mld6_hdr *mp = (struct mld6_hdr *)bp;
829 const u_char *ep;
830
831 /* 'ep' points to the end of available data. */
832 ep = snapend;
833
834 if ((u_char *)mp + sizeof(*mp) > ep)
835 return;
836
837 printf("max resp delay: %d ", EXTRACT_16BITS(&mp->mld6_maxdelay));
838 printf("addr: %s", ip6addr_string(&mp->mld6_addr));
839 }
840
841 static void
842 mldv2_report_print(const u_char *bp, u_int len)
843 {
844 struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
845 u_int group, nsrcs, ngroups;
846 u_int i, j;
847
848 /* Minimum len is 8 */
849 if (len < 8) {
850 printf(" [invalid len %d]", len);
851 return;
852 }
853
854 TCHECK(icp->icmp6_data16[1]);
855 ngroups = EXTRACT_16BITS(&icp->icmp6_data16[1]);
856 printf(", %d group record(s)", ngroups);
857 if (vflag > 0) {
858 /* Print the group records */
859 group = 8;
860 for (i = 0; i < ngroups; i++) {
861 /* type(1) + auxlen(1) + numsrc(2) + grp(16) */
862 if (len < group + 20) {
863 printf(" [invalid number of groups]");
864 return;
865 }
866 TCHECK2(bp[group + 4], sizeof(struct in6_addr));
867 printf(" [gaddr %s", ip6addr_string(&bp[group + 4]));
868 printf(" %s", tok2str(mldv2report2str, " [v2-report-#%d]",
869 bp[group]));
870 nsrcs = (bp[group + 2] << 8) + bp[group + 3];
871 /* Check the number of sources and print them */
872 if (len < group + 20 + (nsrcs * sizeof(struct in6_addr))) {
873 printf(" [invalid number of sources %d]", nsrcs);
874 return;
875 }
876 if (vflag == 1)
877 printf(", %d source(s)", nsrcs);
878 else {
879 /* Print the sources */
880 (void)printf(" {");
881 for (j = 0; j < nsrcs; j++) {
882 TCHECK2(bp[group + 20 + j * sizeof(struct in6_addr)],
883 sizeof(struct in6_addr));
884 printf(" %s", ip6addr_string(&bp[group + 20 + j * sizeof(struct in6_addr)]));
885 }
886 (void)printf(" }");
887 }
888 /* Next group record */
889 group += 20 + nsrcs * sizeof(struct in6_addr);
890 printf("]");
891 }
892 }
893 return;
894 trunc:
895 (void)printf("[|icmp6]");
896 return;
897 }
898
899 static void
900 mldv2_query_print(const u_char *bp, u_int len)
901 {
902 struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
903 u_int mrc;
904 int mrt, qqi;
905 u_int nsrcs;
906 register u_int i;
907
908 /* Minimum len is 28 */
909 if (len < 28) {
910 printf(" [invalid len %d]", len);
911 return;
912 }
913 TCHECK(icp->icmp6_data16[0]);
914 mrc = EXTRACT_16BITS(&icp->icmp6_data16[0]);
915 if (mrc < 32768) {
916 mrt = mrc;
917 } else {
918 mrt = ((mrc & 0x0fff) | 0x1000) << (((mrc & 0x7000) >> 12) + 3);
919 }
920 if (vflag) {
921 (void)printf(" [max resp delay=%d]", mrt);
922 }
923 TCHECK2(bp[8], sizeof(struct in6_addr));
924 printf(" [gaddr %s", ip6addr_string(&bp[8]));
925
926 if (vflag) {
927 TCHECK(bp[25]);
928 if (bp[24] & 0x08) {
929 printf(" sflag");
930 }
931 if (bp[24] & 0x07) {
932 printf(" robustness=%d", bp[24] & 0x07);
933 }
934 if (bp[25] < 128) {
935 qqi = bp[25];
936 } else {
937 qqi = ((bp[25] & 0x0f) | 0x10) << (((bp[25] & 0x70) >> 4) + 3);
938 }
939 printf(" qqi=%d", qqi);
940 }
941
942 TCHECK2(bp[26], 2);
943 nsrcs = EXTRACT_16BITS(&bp[26]);
944 if (nsrcs > 0) {
945 if (len < 28 + nsrcs * sizeof(struct in6_addr))
946 printf(" [invalid number of sources]");
947 else if (vflag > 1) {
948 printf(" {");
949 for (i = 0; i < nsrcs; i++) {
950 TCHECK2(bp[28 + i * sizeof(struct in6_addr)],
951 sizeof(struct in6_addr));
952 printf(" %s", ip6addr_string(&bp[28 + i * sizeof(struct in6_addr)]));
953 }
954 printf(" }");
955 } else
956 printf(", %d source(s)", nsrcs);
957 }
958 printf("]");
959 return;
960 trunc:
961 (void)printf("[|icmp6]");
962 return;
963 }
964
965 static void
966 dnsname_print(const u_char *cp, const u_char *ep)
967 {
968 int i;
969
970 /* DNS name decoding - no decompression */
971 printf(", \"");
972 while (cp < ep) {
973 i = *cp++;
974 if (i) {
975 if (i > ep - cp) {
976 printf("???");
977 break;
978 }
979 while (i-- && cp < ep) {
980 safeputchar(*cp);
981 cp++;
982 }
983 if (cp + 1 < ep && *cp)
984 printf(".");
985 } else {
986 if (cp == ep) {
987 /* FQDN */
988 printf(".");
989 } else if (cp + 1 == ep && *cp == '\0') {
990 /* truncated */
991 } else {
992 /* invalid */
993 printf("???");
994 }
995 break;
996 }
997 }
998 printf("\"");
999 }
1000
1001 static void
1002 icmp6_nodeinfo_print(u_int icmp6len, const u_char *bp, const u_char *ep)
1003 {
1004 struct icmp6_nodeinfo *ni6;
1005 struct icmp6_hdr *dp;
1006 const u_char *cp;
1007 size_t siz, i;
1008 int needcomma;
1009
1010 if (ep < bp)
1011 return;
1012 dp = (struct icmp6_hdr *)bp;
1013 ni6 = (struct icmp6_nodeinfo *)bp;
1014 siz = ep - bp;
1015
1016 switch (ni6->ni_type) {
1017 case ICMP6_NI_QUERY:
1018 if (siz == sizeof(*dp) + 4) {
1019 /* KAME who-are-you */
1020 printf(" who-are-you request");
1021 break;
1022 }
1023 printf(" node information query");
1024
1025 TCHECK2(*dp, sizeof(*ni6));
1026 ni6 = (struct icmp6_nodeinfo *)dp;
1027 printf(" ("); /*)*/
1028 switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
1029 case NI_QTYPE_NOOP:
1030 printf("noop");
1031 break;
1032 case NI_QTYPE_SUPTYPES:
1033 printf("supported qtypes");
1034 i = EXTRACT_16BITS(&ni6->ni_flags);
1035 if (i)
1036 printf(" [%s]", (i & 0x01) ? "C" : "");
1037 break;
1038 break;
1039 case NI_QTYPE_FQDN:
1040 printf("DNS name");
1041 break;
1042 case NI_QTYPE_NODEADDR:
1043 printf("node addresses");
1044 i = ni6->ni_flags;
1045 if (!i)
1046 break;
1047 /* NI_NODEADDR_FLAG_TRUNCATE undefined for query */
1048 printf(" [%s%s%s%s%s%s]",
1049 (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
1050 (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
1051 (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
1052 (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
1053 (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
1054 (i & NI_NODEADDR_FLAG_ALL) ? "A" : "");
1055 break;
1056 default:
1057 printf("unknown");
1058 break;
1059 }
1060
1061 if (ni6->ni_qtype == NI_QTYPE_NOOP ||
1062 ni6->ni_qtype == NI_QTYPE_SUPTYPES) {
1063 if (siz != sizeof(*ni6))
1064 if (vflag)
1065 printf(", invalid len");
1066 /*(*/
1067 printf(")");
1068 break;
1069 }
1070
1071
1072 /* XXX backward compat, icmp-name-lookup-03 */
1073 if (siz == sizeof(*ni6)) {
1074 printf(", 03 draft");
1075 /*(*/
1076 printf(")");
1077 break;
1078 }
1079
1080 switch (ni6->ni_code) {
1081 case ICMP6_NI_SUBJ_IPV6:
1082 if (!TTEST2(*dp,
1083 sizeof(*ni6) + sizeof(struct in6_addr)))
1084 break;
1085 if (siz != sizeof(*ni6) + sizeof(struct in6_addr)) {
1086 if (vflag)
1087 printf(", invalid subject len");
1088 break;
1089 }
1090 printf(", subject=%s",
1091 getname6((const u_char *)(ni6 + 1)));
1092 break;
1093 case ICMP6_NI_SUBJ_FQDN:
1094 printf(", subject=DNS name");
1095 cp = (const u_char *)(ni6 + 1);
1096 if (cp[0] == ep - cp - 1) {
1097 /* icmp-name-lookup-03, pascal string */
1098 if (vflag)
1099 printf(", 03 draft");
1100 cp++;
1101 printf(", \"");
1102 while (cp < ep) {
1103 safeputchar(*cp);
1104 cp++;
1105 }
1106 printf("\"");
1107 } else
1108 dnsname_print(cp, ep);
1109 break;
1110 case ICMP6_NI_SUBJ_IPV4:
1111 if (!TTEST2(*dp, sizeof(*ni6) + sizeof(struct in_addr)))
1112 break;
1113 if (siz != sizeof(*ni6) + sizeof(struct in_addr)) {
1114 if (vflag)
1115 printf(", invalid subject len");
1116 break;
1117 }
1118 printf(", subject=%s",
1119 getname((const u_char *)(ni6 + 1)));
1120 break;
1121 default:
1122 printf(", unknown subject");
1123 break;
1124 }
1125
1126 /*(*/
1127 printf(")");
1128 break;
1129
1130 case ICMP6_NI_REPLY:
1131 if (icmp6len > siz) {
1132 printf("[|icmp6: node information reply]");
1133 break;
1134 }
1135
1136 needcomma = 0;
1137
1138 ni6 = (struct icmp6_nodeinfo *)dp;
1139 printf(" node information reply");
1140 printf(" ("); /*)*/
1141 switch (ni6->ni_code) {
1142 case ICMP6_NI_SUCCESS:
1143 if (vflag) {
1144 printf("success");
1145 needcomma++;
1146 }
1147 break;
1148 case ICMP6_NI_REFUSED:
1149 printf("refused");
1150 needcomma++;
1151 if (siz != sizeof(*ni6))
1152 if (vflag)
1153 printf(", invalid length");
1154 break;
1155 case ICMP6_NI_UNKNOWN:
1156 printf("unknown");
1157 needcomma++;
1158 if (siz != sizeof(*ni6))
1159 if (vflag)
1160 printf(", invalid length");
1161 break;
1162 }
1163
1164 if (ni6->ni_code != ICMP6_NI_SUCCESS) {
1165 /*(*/
1166 printf(")");
1167 break;
1168 }
1169
1170 switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
1171 case NI_QTYPE_NOOP:
1172 if (needcomma)
1173 printf(", ");
1174 printf("noop");
1175 if (siz != sizeof(*ni6))
1176 if (vflag)
1177 printf(", invalid length");
1178 break;
1179 case NI_QTYPE_SUPTYPES:
1180 if (needcomma)
1181 printf(", ");
1182 printf("supported qtypes");
1183 i = EXTRACT_16BITS(&ni6->ni_flags);
1184 if (i)
1185 printf(" [%s]", (i & 0x01) ? "C" : "");
1186 break;
1187 case NI_QTYPE_FQDN:
1188 if (needcomma)
1189 printf(", ");
1190 printf("DNS name");
1191 cp = (const u_char *)(ni6 + 1) + 4;
1192 if (cp[0] == ep - cp - 1) {
1193 /* icmp-name-lookup-03, pascal string */
1194 if (vflag)
1195 printf(", 03 draft");
1196 cp++;
1197 printf(", \"");
1198 while (cp < ep) {
1199 safeputchar(*cp);
1200 cp++;
1201 }
1202 printf("\"");
1203 } else
1204 dnsname_print(cp, ep);
1205 if ((EXTRACT_16BITS(&ni6->ni_flags) & 0x01) != 0)
1206 printf(" [TTL=%u]", *(u_int32_t *)(ni6 + 1));
1207 break;
1208 case NI_QTYPE_NODEADDR:
1209 if (needcomma)
1210 printf(", ");
1211 printf("node addresses");
1212 i = sizeof(*ni6);
1213 while (i < siz) {
1214 if (i + sizeof(struct in6_addr) + sizeof(int32_t) > siz)
1215 break;
1216 printf(" %s", getname6(bp + i));
1217 i += sizeof(struct in6_addr);
1218 printf("(%d)", (int32_t)EXTRACT_32BITS(bp + i));
1219 i += sizeof(int32_t);
1220 }
1221 i = ni6->ni_flags;
1222 if (!i)
1223 break;
1224 printf(" [%s%s%s%s%s%s%s]",
1225 (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
1226 (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
1227 (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
1228 (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
1229 (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
1230 (i & NI_NODEADDR_FLAG_ALL) ? "A" : "",
1231 (i & NI_NODEADDR_FLAG_TRUNCATE) ? "T" : "");
1232 break;
1233 default:
1234 if (needcomma)
1235 printf(", ");
1236 printf("unknown");
1237 break;
1238 }
1239
1240 /*(*/
1241 printf(")");
1242 break;
1243 }
1244 return;
1245
1246 trunc:
1247 fputs("[|icmp6]", stdout);
1248 }
1249
1250 static void
1251 icmp6_rrenum_print(const u_char *bp, const u_char *ep)
1252 {
1253 struct icmp6_router_renum *rr6;
1254 const char *cp;
1255 struct rr_pco_match *match;
1256 struct rr_pco_use *use;
1257 char hbuf[NI_MAXHOST];
1258 int n;
1259
1260 if (ep < bp)
1261 return;
1262 rr6 = (struct icmp6_router_renum *)bp;
1263 cp = (const char *)(rr6 + 1);
1264
1265 TCHECK(rr6->rr_reserved);
1266 switch (rr6->rr_code) {
1267 case ICMP6_ROUTER_RENUMBERING_COMMAND:
1268 printf("router renum: command");
1269 break;
1270 case ICMP6_ROUTER_RENUMBERING_RESULT:
1271 printf("router renum: result");
1272 break;
1273 case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET:
1274 printf("router renum: sequence number reset");
1275 break;
1276 default:
1277 printf("router renum: code-#%d", rr6->rr_code);
1278 break;
1279 }
1280
1281 printf(", seq=%u", EXTRACT_32BITS(&rr6->rr_seqnum));
1282
1283 if (vflag) {
1284 #define F(x, y) ((rr6->rr_flags) & (x) ? (y) : "")
1285 printf("["); /*]*/
1286 if (rr6->rr_flags) {
1287 printf("%s%s%s%s%s,", F(ICMP6_RR_FLAGS_TEST, "T"),
1288 F(ICMP6_RR_FLAGS_REQRESULT, "R"),
1289 F(ICMP6_RR_FLAGS_FORCEAPPLY, "A"),
1290 F(ICMP6_RR_FLAGS_SPECSITE, "S"),
1291 F(ICMP6_RR_FLAGS_PREVDONE, "P"));
1292 }
1293 printf("seg=%u,", rr6->rr_segnum);
1294 printf("maxdelay=%u", EXTRACT_16BITS(&rr6->rr_maxdelay));
1295 if (rr6->rr_reserved)
1296 printf("rsvd=0x%x", EXTRACT_32BITS(&rr6->rr_reserved));
1297 /*[*/
1298 printf("]");
1299 #undef F
1300 }
1301
1302 if (rr6->rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND) {
1303 match = (struct rr_pco_match *)cp;
1304 cp = (const char *)(match + 1);
1305
1306 TCHECK(match->rpm_prefix);
1307
1308 if (vflag > 1)
1309 printf("\n\t");
1310 else
1311 printf(" ");
1312 printf("match("); /*)*/
1313 switch (match->rpm_code) {
1314 case RPM_PCO_ADD: printf("add"); break;
1315 case RPM_PCO_CHANGE: printf("change"); break;
1316 case RPM_PCO_SETGLOBAL: printf("setglobal"); break;
1317 default: printf("#%u", match->rpm_code); break;
1318 }
1319
1320 if (vflag) {
1321 printf(",ord=%u", match->rpm_ordinal);
1322 printf(",min=%u", match->rpm_minlen);
1323 printf(",max=%u", match->rpm_maxlen);
1324 }
1325 if (inet_ntop(AF_INET6, &match->rpm_prefix, hbuf, sizeof(hbuf)))
1326 printf(",%s/%u", hbuf, match->rpm_matchlen);
1327 else
1328 printf(",?/%u", match->rpm_matchlen);
1329 /*(*/
1330 printf(")");
1331
1332 n = match->rpm_len - 3;
1333 if (n % 4)
1334 goto trunc;
1335 n /= 4;
1336 while (n-- > 0) {
1337 use = (struct rr_pco_use *)cp;
1338 cp = (const char *)(use + 1);
1339
1340 TCHECK(use->rpu_prefix);
1341
1342 if (vflag > 1)
1343 printf("\n\t");
1344 else
1345 printf(" ");
1346 printf("use("); /*)*/
1347 if (use->rpu_flags) {
1348 #define F(x, y) ((use->rpu_flags) & (x) ? (y) : "")
1349 printf("%s%s,",
1350 F(ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME, "V"),
1351 F(ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME, "P"));
1352 #undef F
1353 }
1354 if (vflag) {
1355 printf("mask=0x%x,", use->rpu_ramask);
1356 printf("raflags=0x%x,", use->rpu_raflags);
1357 if (~use->rpu_vltime == 0)
1358 printf("vltime=infty,");
1359 else
1360 printf("vltime=%u,",
1361 EXTRACT_32BITS(&use->rpu_vltime));
1362 if (~use->rpu_pltime == 0)
1363 printf("pltime=infty,");
1364 else
1365 printf("pltime=%u,",
1366 EXTRACT_32BITS(&use->rpu_pltime));
1367 }
1368 if (inet_ntop(AF_INET6, &use->rpu_prefix, hbuf,
1369 sizeof(hbuf)))
1370 printf("%s/%u/%u", hbuf, use->rpu_uselen,
1371 use->rpu_keeplen);
1372 else
1373 printf("?/%u/%u", use->rpu_uselen,
1374 use->rpu_keeplen);
1375 /*(*/
1376 printf(")");
1377 }
1378 }
1379
1380 return;
1381
1382 trunc:
1383 fputs("[|icmp6]", stdout);
1384 }
1385
1386 #endif /* INET6 */
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