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Merge branch 'cleanup' of git://github.com/krajaratnam/tcpdump
[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 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 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 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 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 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 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_ADVINTERVAL, "advertisement interval"},
140 { ND_OPT_HOMEAGENT_INFO, "homeagent information"},
141 { ND_OPT_ROUTE_INFO, "route info"},
142 { 0, NULL }
143 };
144
145 /* mldv2 report types */
146 static struct tok mldv2report2str[] = {
147 { 1, "is_in" },
148 { 2, "is_ex" },
149 { 3, "to_in" },
150 { 4, "to_ex" },
151 { 5, "allow" },
152 { 6, "block" },
153 { 0, NULL }
154 };
155
156 static const char *
157 get_rtpref(u_int v)
158 {
159 static const char *rtpref_str[] = {
160 "medium", /* 00 */
161 "high", /* 01 */
162 "rsv", /* 10 */
163 "low" /* 11 */
164 };
165
166 return rtpref_str[((v & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff];
167 }
168
169 static const char *
170 get_lifetime(u_int32_t v)
171 {
172 static char buf[20];
173
174 if (v == (u_int32_t)~0UL)
175 return "infinity";
176 else {
177 snprintf(buf, sizeof(buf), "%u", v);
178 return buf;
179 }
180 }
181
182 static void
183 print_lladdr(const u_int8_t *p, size_t l)
184 {
185 const u_int8_t *ep, *q;
186
187 q = p;
188 ep = p + l;
189 while (l > 0 && q < ep) {
190 if (q > p)
191 printf(":");
192 printf("%02x", *q++);
193 l--;
194 }
195 }
196
197 static int icmp6_cksum(const struct ip6_hdr *ip6, const struct icmp6_hdr *icp,
198 u_int len)
199 {
200 size_t i;
201 register const u_int16_t *sp;
202 u_int32_t sum;
203 union {
204 struct {
205 struct in6_addr ph_src;
206 struct in6_addr ph_dst;
207 u_int32_t ph_len;
208 u_int8_t ph_zero[3];
209 u_int8_t ph_nxt;
210 } ph;
211 u_int16_t pa[20];
212 } phu;
213
214 /* pseudo-header */
215 memset(&phu, 0, sizeof(phu));
216 phu.ph.ph_src = ip6->ip6_src;
217 phu.ph.ph_dst = ip6->ip6_dst;
218 phu.ph.ph_len = htonl(len);
219 phu.ph.ph_nxt = IPPROTO_ICMPV6;
220
221 sum = 0;
222 for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
223 sum += phu.pa[i];
224
225 sp = (const u_int16_t *)icp;
226
227 for (i = 0; i < (len & ~1); i += 2)
228 sum += *sp++;
229
230 if (len & 1)
231 sum += htons((*(const u_int8_t *)sp) << 8);
232
233 while (sum > 0xffff)
234 sum = (sum & 0xffff) + (sum >> 16);
235 sum = ~sum & 0xffff;
236
237 return (sum);
238 }
239
240 enum ND_RPL_CODE {
241 ND_RPL_DAG_IS=0x01,
242 ND_RPL_DAG_IO=0x02,
243 ND_RPL_DAO =0x04
244 };
245
246 enum ND_RPL_DIO_FLAGS {
247 ND_RPL_DIO_GROUNDED = 0x80,
248 ND_RPL_DIO_DATRIG = 0x40,
249 ND_RPL_DIO_DASUPPORT= 0x20,
250 ND_RPL_DIO_RES4 = 0x10,
251 ND_RPL_DIO_RES3 = 0x08,
252 ND_RPL_DIO_PRF_MASK = 0x07, /* 3-bit preference */
253 };
254
255 struct nd_rpl_dio {
256 u_int8_t rpl_flags;
257 u_int8_t rpl_seq;
258 u_int8_t rpl_instanceid;
259 u_int8_t rpl_dagrank;
260 u_int8_t rpl_dagid[16];
261 };
262
263 static void
264 rpl_print(netdissect_options *ndo,
265 const struct icmp6_hdr *hdr,
266 const u_char *bp, u_int length _U_)
267 {
268 struct nd_rpl_dio *dio = (struct nd_rpl_dio *)bp;
269
270 ND_TCHECK(dio->rpl_dagid);
271
272 switch(hdr->icmp6_code) {
273 case ND_RPL_DAG_IS:
274 ND_PRINT((ndo, ", DAG Information Solicitation"));
275 if(ndo->ndo_vflag) {
276 }
277 break;
278 case ND_RPL_DAG_IO:
279 ND_PRINT((ndo, ", DAG Information Object"));
280 if(ndo->ndo_vflag) {
281 char dagid[65];
282 char *d = dagid;
283 int i;
284 for(i=0;i<16;i++) {
285 if(isprint(dio->rpl_dagid[i])) {
286 *d++ = dio->rpl_dagid[i];
287 } else {
288 int cnt=snprintf(d,4,"0x%02x",
289 dio->rpl_dagid[i]);
290 d += cnt;
291 }
292 }
293 *d++ = '\0';
294 ND_PRINT((ndo, " [seq:%u,instance:%u,rank:%u,dagid:%s]",
295 dio->rpl_seq,
296 dio->rpl_instanceid,
297 dio->rpl_dagrank,
298 dagid));
299 }
300 break;
301 case ND_RPL_DAO:
302 ND_PRINT((ndo, ", Destination Advertisement Object"));
303 if(ndo->ndo_vflag) {
304 }
305 break;
306 default:
307 ND_PRINT((ndo, ", RPL message, unknown code %u",hdr->icmp6_code));
308 break;
309 }
310 return;
311 trunc:
312 ND_PRINT((ndo," [|truncated]"));
313 return;
314
315 }
316
317
318 void
319 icmp6_print(netdissect_options *ndo,
320 const u_char *bp, u_int length, const u_char *bp2, int fragmented)
321 {
322 const struct icmp6_hdr *dp;
323 const struct ip6_hdr *ip;
324 const struct ip6_hdr *oip;
325 const struct udphdr *ouh;
326 int dport;
327 const u_char *ep;
328 u_int prot;
329
330 dp = (struct icmp6_hdr *)bp;
331 ip = (struct ip6_hdr *)bp2;
332 oip = (struct ip6_hdr *)(dp + 1);
333 /* 'ep' points to the end of available data. */
334 ep = snapend;
335
336 TCHECK(dp->icmp6_cksum);
337
338 if (vflag && !fragmented) {
339 int sum = dp->icmp6_cksum;
340
341 if (TTEST2(bp[0], length)) {
342 sum = icmp6_cksum(ip, dp, length);
343 if (sum != 0)
344 (void)printf("[bad icmp6 cksum %x!] ", sum);
345 else
346 (void)printf("[icmp6 sum ok] ");
347 }
348 }
349
350 printf("ICMP6, %s", tok2str(icmp6_type_values,"unknown icmp6 type (%u)",dp->icmp6_type));
351
352 /* display cosmetics: print the packet length for printer that use the vflag now */
353 if (vflag && (dp->icmp6_type ==
354 ND_ROUTER_SOLICIT ||
355 ND_ROUTER_ADVERT ||
356 ND_NEIGHBOR_ADVERT ||
357 ND_NEIGHBOR_SOLICIT ||
358 ND_REDIRECT ||
359 ICMP6_HADISCOV_REPLY ||
360 ICMP6_MOBILEPREFIX_ADVERT ))
361 printf(", length %u", length);
362
363 switch (dp->icmp6_type) {
364 case ICMP6_DST_UNREACH:
365 TCHECK(oip->ip6_dst);
366 printf(", %s", tok2str(icmp6_dst_unreach_code_values,"unknown unreach code (%u)",dp->icmp6_code));
367 switch (dp->icmp6_code) {
368
369 case ICMP6_DST_UNREACH_NOROUTE: /* fall through */
370 case ICMP6_DST_UNREACH_ADMIN:
371 case ICMP6_DST_UNREACH_ADDR:
372 printf(" %s",ip6addr_string(&oip->ip6_dst));
373 break;
374 case ICMP6_DST_UNREACH_BEYONDSCOPE:
375 printf(" %s, source address %s",
376 ip6addr_string(&oip->ip6_dst),
377 ip6addr_string(&oip->ip6_src));
378 break;
379 case ICMP6_DST_UNREACH_NOPORT:
380 if ((ouh = get_upperlayer((u_char *)oip, &prot))
381 == NULL)
382 goto trunc;
383
384 dport = EXTRACT_16BITS(&ouh->uh_dport);
385 switch (prot) {
386 case IPPROTO_TCP:
387 printf(", %s tcp port %s",
388 ip6addr_string(&oip->ip6_dst),
389 tcpport_string(dport));
390 break;
391 case IPPROTO_UDP:
392 printf(", %s udp port %s",
393 ip6addr_string(&oip->ip6_dst),
394 udpport_string(dport));
395 break;
396 default:
397 printf(", %s protocol %d port %d unreachable",
398 ip6addr_string(&oip->ip6_dst),
399 oip->ip6_nxt, dport);
400 break;
401 }
402 break;
403 default:
404 if (vflag <= 1) {
405 print_unknown_data(bp,"\n\t",length);
406 return;
407 }
408 break;
409 }
410 break;
411 case ICMP6_PACKET_TOO_BIG:
412 TCHECK(dp->icmp6_mtu);
413 printf(", mtu %u", EXTRACT_32BITS(&dp->icmp6_mtu));
414 break;
415 case ICMP6_TIME_EXCEEDED:
416 TCHECK(oip->ip6_dst);
417 switch (dp->icmp6_code) {
418 case ICMP6_TIME_EXCEED_TRANSIT:
419 printf(" for %s",
420 ip6addr_string(&oip->ip6_dst));
421 break;
422 case ICMP6_TIME_EXCEED_REASSEMBLY:
423 printf(" (reassembly)");
424 break;
425 default:
426 printf(", unknown code (%u)", dp->icmp6_code);
427 break;
428 }
429 break;
430 case ICMP6_PARAM_PROB:
431 TCHECK(oip->ip6_dst);
432 switch (dp->icmp6_code) {
433 case ICMP6_PARAMPROB_HEADER:
434 printf(", errorneous - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
435 break;
436 case ICMP6_PARAMPROB_NEXTHEADER:
437 printf(", next header - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
438 break;
439 case ICMP6_PARAMPROB_OPTION:
440 printf(", option - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
441 break;
442 default:
443 printf(", code-#%d",
444 dp->icmp6_code);
445 break;
446 }
447 break;
448 case ICMP6_ECHO_REQUEST:
449 case ICMP6_ECHO_REPLY:
450 TCHECK(dp->icmp6_seq);
451 printf(", seq %u", EXTRACT_16BITS(&dp->icmp6_seq));
452 break;
453 case ICMP6_MEMBERSHIP_QUERY:
454 if (length == MLD_MINLEN) {
455 mld6_print((const u_char *)dp);
456 } else if (length >= MLDV2_MINLEN) {
457 printf("v2 ");
458 mldv2_query_print((const u_char *)dp, length);
459 } else {
460 printf(" unknown-version (len %u) ", length);
461 }
462 break;
463 case ICMP6_MEMBERSHIP_REPORT:
464 mld6_print((const u_char *)dp);
465 break;
466 case ICMP6_MEMBERSHIP_REDUCTION:
467 mld6_print((const u_char *)dp);
468 break;
469 case ND_ROUTER_SOLICIT:
470 #define RTSOLLEN 8
471 if (vflag) {
472 icmp6_opt_print((const u_char *)dp + RTSOLLEN,
473 length - RTSOLLEN);
474 }
475 break;
476 case ND_ROUTER_ADVERT:
477 #define RTADVLEN 16
478 if (vflag) {
479 struct nd_router_advert *p;
480
481 p = (struct nd_router_advert *)dp;
482 TCHECK(p->nd_ra_retransmit);
483 printf("\n\thop limit %u, Flags [%s]" \
484 ", pref %s, router lifetime %us, reachable time %us, retrans time %us",
485 (u_int)p->nd_ra_curhoplimit,
486 bittok2str(icmp6_opt_ra_flag_values,"none",(p->nd_ra_flags_reserved)),
487 get_rtpref(p->nd_ra_flags_reserved),
488 EXTRACT_16BITS(&p->nd_ra_router_lifetime),
489 EXTRACT_32BITS(&p->nd_ra_reachable),
490 EXTRACT_32BITS(&p->nd_ra_retransmit));
491
492 icmp6_opt_print((const u_char *)dp + RTADVLEN,
493 length - RTADVLEN);
494 }
495 break;
496 case ND_NEIGHBOR_SOLICIT:
497 {
498 struct nd_neighbor_solicit *p;
499 p = (struct nd_neighbor_solicit *)dp;
500 TCHECK(p->nd_ns_target);
501 printf(", who has %s", ip6addr_string(&p->nd_ns_target));
502 if (vflag) {
503 #define NDSOLLEN 24
504 icmp6_opt_print((const u_char *)dp + NDSOLLEN,
505 length - NDSOLLEN);
506 }
507 }
508 break;
509 case ND_NEIGHBOR_ADVERT:
510 {
511 struct nd_neighbor_advert *p;
512
513 p = (struct nd_neighbor_advert *)dp;
514 TCHECK(p->nd_na_target);
515 printf(", tgt is %s",
516 ip6addr_string(&p->nd_na_target));
517 if (vflag) {
518 printf(", Flags [%s]",
519 bittok2str(icmp6_nd_na_flag_values,
520 "none",
521 EXTRACT_32BITS(&p->nd_na_flags_reserved)));
522 #define NDADVLEN 24
523 icmp6_opt_print((const u_char *)dp + NDADVLEN,
524 length - NDADVLEN);
525 #undef NDADVLEN
526 }
527 }
528 break;
529 case ND_REDIRECT:
530 #define RDR(i) ((struct nd_redirect *)(i))
531 TCHECK(RDR(dp)->nd_rd_dst);
532 printf(", %s", getname6((const u_char *)&RDR(dp)->nd_rd_dst));
533 TCHECK(RDR(dp)->nd_rd_target);
534 printf(" to %s",
535 getname6((const u_char*)&RDR(dp)->nd_rd_target));
536 #define REDIRECTLEN 40
537 if (vflag) {
538 icmp6_opt_print((const u_char *)dp + REDIRECTLEN,
539 length - REDIRECTLEN);
540 }
541 break;
542 #undef REDIRECTLEN
543 #undef RDR
544 case ICMP6_ROUTER_RENUMBERING:
545 icmp6_rrenum_print(bp, ep);
546 break;
547 case ICMP6_NI_QUERY:
548 case ICMP6_NI_REPLY:
549 icmp6_nodeinfo_print(length, bp, ep);
550 break;
551 case IND_SOLICIT:
552 case IND_ADVERT:
553 break;
554 case ICMP6_V2_MEMBERSHIP_REPORT:
555 mldv2_report_print((const u_char *) dp, length);
556 break;
557 case ICMP6_MOBILEPREFIX_SOLICIT: /* fall through */
558 case ICMP6_HADISCOV_REQUEST:
559 TCHECK(dp->icmp6_data16[0]);
560 printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
561 break;
562 case ICMP6_HADISCOV_REPLY:
563 if (vflag) {
564 struct in6_addr *in6;
565 u_char *cp;
566
567 TCHECK(dp->icmp6_data16[0]);
568 printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
569 cp = (u_char *)dp + length;
570 in6 = (struct in6_addr *)(dp + 1);
571 for (; (u_char *)in6 < cp; in6++) {
572 TCHECK(*in6);
573 printf(", %s", ip6addr_string(in6));
574 }
575 }
576 break;
577 case ICMP6_MOBILEPREFIX_ADVERT:
578 if (vflag) {
579 TCHECK(dp->icmp6_data16[0]);
580 printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
581 if (dp->icmp6_data16[1] & 0xc0)
582 printf(" ");
583 if (dp->icmp6_data16[1] & 0x80)
584 printf("M");
585 if (dp->icmp6_data16[1] & 0x40)
586 printf("O");
587 #define MPADVLEN 8
588 icmp6_opt_print((const u_char *)dp + MPADVLEN,
589 length - MPADVLEN);
590 }
591 break;
592 case ND_RPL_MESSAGE:
593 rpl_print(ndo, dp, &dp->icmp6_data8[0], length);
594 break;
595 default:
596 printf(", length %u", length);
597 if (vflag <= 1)
598 print_unknown_data(bp,"\n\t", length);
599 return;
600 }
601 if (!vflag)
602 printf(", length %u", length);
603 return;
604 trunc:
605 fputs("[|icmp6]", stdout);
606 }
607
608 static struct udphdr *
609 get_upperlayer(u_char *bp, u_int *prot)
610 {
611 const u_char *ep;
612 struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
613 struct udphdr *uh;
614 struct ip6_hbh *hbh;
615 struct ip6_frag *fragh;
616 struct ah *ah;
617 u_int nh;
618 int hlen;
619
620 /* 'ep' points to the end of available data. */
621 ep = snapend;
622
623 if (!TTEST(ip6->ip6_nxt))
624 return NULL;
625
626 nh = ip6->ip6_nxt;
627 hlen = sizeof(struct ip6_hdr);
628
629 while (bp < ep) {
630 bp += hlen;
631
632 switch(nh) {
633 case IPPROTO_UDP:
634 case IPPROTO_TCP:
635 uh = (struct udphdr *)bp;
636 if (TTEST(uh->uh_dport)) {
637 *prot = nh;
638 return(uh);
639 }
640 else
641 return(NULL);
642 /* NOTREACHED */
643
644 case IPPROTO_HOPOPTS:
645 case IPPROTO_DSTOPTS:
646 case IPPROTO_ROUTING:
647 hbh = (struct ip6_hbh *)bp;
648 if (!TTEST(hbh->ip6h_len))
649 return(NULL);
650 nh = hbh->ip6h_nxt;
651 hlen = (hbh->ip6h_len + 1) << 3;
652 break;
653
654 case IPPROTO_FRAGMENT: /* this should be odd, but try anyway */
655 fragh = (struct ip6_frag *)bp;
656 if (!TTEST(fragh->ip6f_offlg))
657 return(NULL);
658 /* fragments with non-zero offset are meaningless */
659 if ((EXTRACT_16BITS(&fragh->ip6f_offlg) & IP6F_OFF_MASK) != 0)
660 return(NULL);
661 nh = fragh->ip6f_nxt;
662 hlen = sizeof(struct ip6_frag);
663 break;
664
665 case IPPROTO_AH:
666 ah = (struct ah *)bp;
667 if (!TTEST(ah->ah_len))
668 return(NULL);
669 nh = ah->ah_nxt;
670 hlen = (ah->ah_len + 2) << 2;
671 break;
672
673 default: /* unknown or undecodable header */
674 *prot = nh; /* meaningless, but set here anyway */
675 return(NULL);
676 }
677 }
678
679 return(NULL); /* should be notreached, though */
680 }
681
682 static void
683 icmp6_opt_print(const u_char *bp, int resid)
684 {
685 const struct nd_opt_hdr *op;
686 const struct nd_opt_hdr *opl; /* why there's no struct? */
687 const struct nd_opt_prefix_info *opp;
688 const struct icmp6_opts_redirect *opr;
689 const struct nd_opt_mtu *opm;
690 const struct nd_opt_rdnss *oprd;
691 const struct nd_opt_advinterval *opa;
692 const struct nd_opt_homeagent_info *oph;
693 const struct nd_opt_route_info *opri;
694 const u_char *cp, *ep;
695 struct in6_addr in6, *in6p;
696 size_t l;
697 u_int i;
698
699 #define ECHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) return
700
701 cp = bp;
702 /* 'ep' points to the end of available data. */
703 ep = snapend;
704
705 while (cp < ep) {
706 op = (struct nd_opt_hdr *)cp;
707
708 ECHECK(op->nd_opt_len);
709 if (resid <= 0)
710 return;
711 if (op->nd_opt_len == 0)
712 goto trunc;
713 if (cp + (op->nd_opt_len << 3) > ep)
714 goto trunc;
715
716 printf("\n\t %s option (%u), length %u (%u): ",
717 tok2str(icmp6_opt_values, "unknown", op->nd_opt_type),
718 op->nd_opt_type,
719 op->nd_opt_len << 3,
720 op->nd_opt_len);
721
722 switch (op->nd_opt_type) {
723 case ND_OPT_SOURCE_LINKADDR:
724 opl = (struct nd_opt_hdr *)op;
725 l = (op->nd_opt_len << 3) - 2;
726 print_lladdr(cp + 2, l);
727 break;
728 case ND_OPT_TARGET_LINKADDR:
729 opl = (struct nd_opt_hdr *)op;
730 l = (op->nd_opt_len << 3) - 2;
731 print_lladdr(cp + 2, l);
732 break;
733 case ND_OPT_PREFIX_INFORMATION:
734 opp = (struct nd_opt_prefix_info *)op;
735 TCHECK(opp->nd_opt_pi_prefix);
736 printf("%s/%u%s, Flags [%s], valid time %ss",
737 ip6addr_string(&opp->nd_opt_pi_prefix),
738 opp->nd_opt_pi_prefix_len,
739 (op->nd_opt_len != 4) ? "badlen" : "",
740 bittok2str(icmp6_opt_pi_flag_values, "none", opp->nd_opt_pi_flags_reserved),
741 get_lifetime(EXTRACT_32BITS(&opp->nd_opt_pi_valid_time)));
742 printf(", pref. time %ss", get_lifetime(EXTRACT_32BITS(&opp->nd_opt_pi_preferred_time)));
743 break;
744 case ND_OPT_REDIRECTED_HEADER:
745 opr = (struct icmp6_opts_redirect *)op;
746 print_unknown_data(bp,"\n\t ",op->nd_opt_len<<3);
747 /* xxx */
748 break;
749 case ND_OPT_MTU:
750 opm = (struct nd_opt_mtu *)op;
751 TCHECK(opm->nd_opt_mtu_mtu);
752 printf(" %u%s",
753 EXTRACT_32BITS(&opm->nd_opt_mtu_mtu),
754 (op->nd_opt_len != 1) ? "bad option length" : "" );
755 break;
756 case ND_OPT_RDNSS:
757 oprd = (struct nd_opt_rdnss *)op;
758 l = (op->nd_opt_len - 1) / 2;
759 printf(" lifetime %us,",
760 EXTRACT_32BITS(&oprd->nd_opt_rdnss_lifetime));
761 for (i = 0; i < l; i++) {
762 TCHECK(oprd->nd_opt_rdnss_addr[i]);
763 printf(" addr: %s",
764 ip6addr_string(&oprd->nd_opt_rdnss_addr[i]));
765 }
766 break;
767 case ND_OPT_ADVINTERVAL:
768 opa = (struct nd_opt_advinterval *)op;
769 TCHECK(opa->nd_opt_adv_interval);
770 printf(" %us", EXTRACT_32BITS(&opa->nd_opt_adv_interval));
771 break;
772 case ND_OPT_HOMEAGENT_INFO:
773 oph = (struct nd_opt_homeagent_info *)op;
774 TCHECK(oph->nd_opt_hai_lifetime);
775 printf(" preference %u, lifetime %u",
776 EXTRACT_16BITS(&oph->nd_opt_hai_preference),
777 EXTRACT_16BITS(&oph->nd_opt_hai_lifetime));
778 break;
779 case ND_OPT_ROUTE_INFO:
780 opri = (struct nd_opt_route_info *)op;
781 TCHECK(opri->nd_opt_rti_lifetime);
782 memset(&in6, 0, sizeof(in6));
783 in6p = (struct in6_addr *)(opri + 1);
784 switch (op->nd_opt_len) {
785 case 1:
786 break;
787 case 2:
788 TCHECK2(*in6p, 8);
789 memcpy(&in6, opri + 1, 8);
790 break;
791 case 3:
792 TCHECK(*in6p);
793 memcpy(&in6, opri + 1, sizeof(in6));
794 break;
795 default:
796 goto trunc;
797 }
798 printf(" %s/%u", ip6addr_string(&in6),
799 opri->nd_opt_rti_prefixlen);
800 printf(", pref=%s", get_rtpref(opri->nd_opt_rti_flags));
801 printf(", lifetime=%s",
802 get_lifetime(EXTRACT_32BITS(&opri->nd_opt_rti_lifetime)));
803 break;
804 default:
805 if (vflag <= 1) {
806 print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
807 return;
808 }
809 break;
810 }
811 /* do we want to see an additional hexdump ? */
812 if (vflag> 1)
813 print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
814
815 cp += op->nd_opt_len << 3;
816 resid -= op->nd_opt_len << 3;
817 }
818 return;
819
820 trunc:
821 fputs("[ndp opt]", stdout);
822 return;
823 #undef ECHECK
824 }
825
826 static void
827 mld6_print(const u_char *bp)
828 {
829 struct mld6_hdr *mp = (struct mld6_hdr *)bp;
830 const u_char *ep;
831
832 /* 'ep' points to the end of available data. */
833 ep = snapend;
834
835 if ((u_char *)mp + sizeof(*mp) > ep)
836 return;
837
838 printf("max resp delay: %d ", EXTRACT_16BITS(&mp->mld6_maxdelay));
839 printf("addr: %s", ip6addr_string(&mp->mld6_addr));
840 }
841
842 static void
843 mldv2_report_print(const u_char *bp, u_int len)
844 {
845 struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
846 u_int group, nsrcs, ngroups;
847 u_int i, j;
848
849 /* Minimum len is 8 */
850 if (len < 8) {
851 printf(" [invalid len %d]", len);
852 return;
853 }
854
855 TCHECK(icp->icmp6_data16[1]);
856 ngroups = EXTRACT_16BITS(&icp->icmp6_data16[1]);
857 printf(", %d group record(s)", ngroups);
858 if (vflag > 0) {
859 /* Print the group records */
860 group = 8;
861 for (i = 0; i < ngroups; i++) {
862 /* type(1) + auxlen(1) + numsrc(2) + grp(16) */
863 if (len < group + 20) {
864 printf(" [invalid number of groups]");
865 return;
866 }
867 TCHECK2(bp[group + 4], sizeof(struct in6_addr));
868 printf(" [gaddr %s", ip6addr_string(&bp[group + 4]));
869 printf(" %s", tok2str(mldv2report2str, " [v2-report-#%d]",
870 bp[group]));
871 nsrcs = (bp[group + 2] << 8) + bp[group + 3];
872 /* Check the number of sources and print them */
873 if (len < group + 20 + (nsrcs * sizeof(struct in6_addr))) {
874 printf(" [invalid number of sources %d]", nsrcs);
875 return;
876 }
877 if (vflag == 1)
878 printf(", %d source(s)", nsrcs);
879 else {
880 /* Print the sources */
881 (void)printf(" {");
882 for (j = 0; j < nsrcs; j++) {
883 TCHECK2(bp[group + 20 + j * sizeof(struct in6_addr)],
884 sizeof(struct in6_addr));
885 printf(" %s", ip6addr_string(&bp[group + 20 + j * sizeof(struct in6_addr)]));
886 }
887 (void)printf(" }");
888 }
889 /* Next group record */
890 group += 20 + nsrcs * sizeof(struct in6_addr);
891 printf("]");
892 }
893 }
894 return;
895 trunc:
896 (void)printf("[|icmp6]");
897 return;
898 }
899
900 static void
901 mldv2_query_print(const u_char *bp, u_int len)
902 {
903 struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
904 u_int mrc;
905 int mrt, qqi;
906 u_int nsrcs;
907 register u_int i;
908
909 /* Minimum len is 28 */
910 if (len < 28) {
911 printf(" [invalid len %d]", len);
912 return;
913 }
914 TCHECK(icp->icmp6_data16[0]);
915 mrc = EXTRACT_16BITS(&icp->icmp6_data16[0]);
916 if (mrc < 32768) {
917 mrt = mrc;
918 } else {
919 mrt = ((mrc & 0x0fff) | 0x1000) << (((mrc & 0x7000) >> 12) + 3);
920 }
921 if (vflag) {
922 (void)printf(" [max resp delay=%d]", mrt);
923 }
924 TCHECK2(bp[8], sizeof(struct in6_addr));
925 printf(" [gaddr %s", ip6addr_string(&bp[8]));
926
927 if (vflag) {
928 TCHECK(bp[25]);
929 if (bp[24] & 0x08) {
930 printf(" sflag");
931 }
932 if (bp[24] & 0x07) {
933 printf(" robustness=%d", bp[24] & 0x07);
934 }
935 if (bp[25] < 128) {
936 qqi = bp[25];
937 } else {
938 qqi = ((bp[25] & 0x0f) | 0x10) << (((bp[25] & 0x70) >> 4) + 3);
939 }
940 printf(" qqi=%d", qqi);
941 }
942
943 TCHECK2(bp[26], 2);
944 nsrcs = EXTRACT_16BITS(&bp[26]);
945 if (nsrcs > 0) {
946 if (len < 28 + nsrcs * sizeof(struct in6_addr))
947 printf(" [invalid number of sources]");
948 else if (vflag > 1) {
949 printf(" {");
950 for (i = 0; i < nsrcs; i++) {
951 TCHECK2(bp[28 + i * sizeof(struct in6_addr)],
952 sizeof(struct in6_addr));
953 printf(" %s", ip6addr_string(&bp[28 + i * sizeof(struct in6_addr)]));
954 }
955 printf(" }");
956 } else
957 printf(", %d source(s)", nsrcs);
958 }
959 printf("]");
960 return;
961 trunc:
962 (void)printf("[|icmp6]");
963 return;
964 }
965
966 static void
967 dnsname_print(const u_char *cp, const u_char *ep)
968 {
969 int i;
970
971 /* DNS name decoding - no decompression */
972 printf(", \"");
973 while (cp < ep) {
974 i = *cp++;
975 if (i) {
976 if (i > ep - cp) {
977 printf("???");
978 break;
979 }
980 while (i-- && cp < ep) {
981 safeputchar(*cp);
982 cp++;
983 }
984 if (cp + 1 < ep && *cp)
985 printf(".");
986 } else {
987 if (cp == ep) {
988 /* FQDN */
989 printf(".");
990 } else if (cp + 1 == ep && *cp == '\0') {
991 /* truncated */
992 } else {
993 /* invalid */
994 printf("???");
995 }
996 break;
997 }
998 }
999 printf("\"");
1000 }
1001
1002 static void
1003 icmp6_nodeinfo_print(u_int icmp6len, const u_char *bp, const u_char *ep)
1004 {
1005 struct icmp6_nodeinfo *ni6;
1006 struct icmp6_hdr *dp;
1007 const u_char *cp;
1008 size_t siz, i;
1009 int needcomma;
1010
1011 if (ep < bp)
1012 return;
1013 dp = (struct icmp6_hdr *)bp;
1014 ni6 = (struct icmp6_nodeinfo *)bp;
1015 siz = ep - bp;
1016
1017 switch (ni6->ni_type) {
1018 case ICMP6_NI_QUERY:
1019 if (siz == sizeof(*dp) + 4) {
1020 /* KAME who-are-you */
1021 printf(" who-are-you request");
1022 break;
1023 }
1024 printf(" node information query");
1025
1026 TCHECK2(*dp, sizeof(*ni6));
1027 ni6 = (struct icmp6_nodeinfo *)dp;
1028 printf(" ("); /*)*/
1029 switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
1030 case NI_QTYPE_NOOP:
1031 printf("noop");
1032 break;
1033 case NI_QTYPE_SUPTYPES:
1034 printf("supported qtypes");
1035 i = EXTRACT_16BITS(&ni6->ni_flags);
1036 if (i)
1037 printf(" [%s]", (i & 0x01) ? "C" : "");
1038 break;
1039 break;
1040 case NI_QTYPE_FQDN:
1041 printf("DNS name");
1042 break;
1043 case NI_QTYPE_NODEADDR:
1044 printf("node addresses");
1045 i = ni6->ni_flags;
1046 if (!i)
1047 break;
1048 /* NI_NODEADDR_FLAG_TRUNCATE undefined for query */
1049 printf(" [%s%s%s%s%s%s]",
1050 (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
1051 (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
1052 (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
1053 (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
1054 (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
1055 (i & NI_NODEADDR_FLAG_ALL) ? "A" : "");
1056 break;
1057 default:
1058 printf("unknown");
1059 break;
1060 }
1061
1062 if (ni6->ni_qtype == NI_QTYPE_NOOP ||
1063 ni6->ni_qtype == NI_QTYPE_SUPTYPES) {
1064 if (siz != sizeof(*ni6))
1065 if (vflag)
1066 printf(", invalid len");
1067 /*(*/
1068 printf(")");
1069 break;
1070 }
1071
1072
1073 /* XXX backward compat, icmp-name-lookup-03 */
1074 if (siz == sizeof(*ni6)) {
1075 printf(", 03 draft");
1076 /*(*/
1077 printf(")");
1078 break;
1079 }
1080
1081 switch (ni6->ni_code) {
1082 case ICMP6_NI_SUBJ_IPV6:
1083 if (!TTEST2(*dp,
1084 sizeof(*ni6) + sizeof(struct in6_addr)))
1085 break;
1086 if (siz != sizeof(*ni6) + sizeof(struct in6_addr)) {
1087 if (vflag)
1088 printf(", invalid subject len");
1089 break;
1090 }
1091 printf(", subject=%s",
1092 getname6((const u_char *)(ni6 + 1)));
1093 break;
1094 case ICMP6_NI_SUBJ_FQDN:
1095 printf(", subject=DNS name");
1096 cp = (const u_char *)(ni6 + 1);
1097 if (cp[0] == ep - cp - 1) {
1098 /* icmp-name-lookup-03, pascal string */
1099 if (vflag)
1100 printf(", 03 draft");
1101 cp++;
1102 printf(", \"");
1103 while (cp < ep) {
1104 safeputchar(*cp);
1105 cp++;
1106 }
1107 printf("\"");
1108 } else
1109 dnsname_print(cp, ep);
1110 break;
1111 case ICMP6_NI_SUBJ_IPV4:
1112 if (!TTEST2(*dp, sizeof(*ni6) + sizeof(struct in_addr)))
1113 break;
1114 if (siz != sizeof(*ni6) + sizeof(struct in_addr)) {
1115 if (vflag)
1116 printf(", invalid subject len");
1117 break;
1118 }
1119 printf(", subject=%s",
1120 getname((const u_char *)(ni6 + 1)));
1121 break;
1122 default:
1123 printf(", unknown subject");
1124 break;
1125 }
1126
1127 /*(*/
1128 printf(")");
1129 break;
1130
1131 case ICMP6_NI_REPLY:
1132 if (icmp6len > siz) {
1133 printf("[|icmp6: node information reply]");
1134 break;
1135 }
1136
1137 needcomma = 0;
1138
1139 ni6 = (struct icmp6_nodeinfo *)dp;
1140 printf(" node information reply");
1141 printf(" ("); /*)*/
1142 switch (ni6->ni_code) {
1143 case ICMP6_NI_SUCCESS:
1144 if (vflag) {
1145 printf("success");
1146 needcomma++;
1147 }
1148 break;
1149 case ICMP6_NI_REFUSED:
1150 printf("refused");
1151 needcomma++;
1152 if (siz != sizeof(*ni6))
1153 if (vflag)
1154 printf(", invalid length");
1155 break;
1156 case ICMP6_NI_UNKNOWN:
1157 printf("unknown");
1158 needcomma++;
1159 if (siz != sizeof(*ni6))
1160 if (vflag)
1161 printf(", invalid length");
1162 break;
1163 }
1164
1165 if (ni6->ni_code != ICMP6_NI_SUCCESS) {
1166 /*(*/
1167 printf(")");
1168 break;
1169 }
1170
1171 switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
1172 case NI_QTYPE_NOOP:
1173 if (needcomma)
1174 printf(", ");
1175 printf("noop");
1176 if (siz != sizeof(*ni6))
1177 if (vflag)
1178 printf(", invalid length");
1179 break;
1180 case NI_QTYPE_SUPTYPES:
1181 if (needcomma)
1182 printf(", ");
1183 printf("supported qtypes");
1184 i = EXTRACT_16BITS(&ni6->ni_flags);
1185 if (i)
1186 printf(" [%s]", (i & 0x01) ? "C" : "");
1187 break;
1188 case NI_QTYPE_FQDN:
1189 if (needcomma)
1190 printf(", ");
1191 printf("DNS name");
1192 cp = (const u_char *)(ni6 + 1) + 4;
1193 if (cp[0] == ep - cp - 1) {
1194 /* icmp-name-lookup-03, pascal string */
1195 if (vflag)
1196 printf(", 03 draft");
1197 cp++;
1198 printf(", \"");
1199 while (cp < ep) {
1200 safeputchar(*cp);
1201 cp++;
1202 }
1203 printf("\"");
1204 } else
1205 dnsname_print(cp, ep);
1206 if ((EXTRACT_16BITS(&ni6->ni_flags) & 0x01) != 0)
1207 printf(" [TTL=%u]", *(u_int32_t *)(ni6 + 1));
1208 break;
1209 case NI_QTYPE_NODEADDR:
1210 if (needcomma)
1211 printf(", ");
1212 printf("node addresses");
1213 i = sizeof(*ni6);
1214 while (i < siz) {
1215 if (i + sizeof(struct in6_addr) + sizeof(int32_t) > siz)
1216 break;
1217 printf(" %s", getname6(bp + i));
1218 i += sizeof(struct in6_addr);
1219 printf("(%d)", (int32_t)EXTRACT_32BITS(bp + i));
1220 i += sizeof(int32_t);
1221 }
1222 i = ni6->ni_flags;
1223 if (!i)
1224 break;
1225 printf(" [%s%s%s%s%s%s%s]",
1226 (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
1227 (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
1228 (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
1229 (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
1230 (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
1231 (i & NI_NODEADDR_FLAG_ALL) ? "A" : "",
1232 (i & NI_NODEADDR_FLAG_TRUNCATE) ? "T" : "");
1233 break;
1234 default:
1235 if (needcomma)
1236 printf(", ");
1237 printf("unknown");
1238 break;
1239 }
1240
1241 /*(*/
1242 printf(")");
1243 break;
1244 }
1245 return;
1246
1247 trunc:
1248 fputs("[|icmp6]", stdout);
1249 }
1250
1251 static void
1252 icmp6_rrenum_print(const u_char *bp, const u_char *ep)
1253 {
1254 struct icmp6_router_renum *rr6;
1255 const char *cp;
1256 struct rr_pco_match *match;
1257 struct rr_pco_use *use;
1258 char hbuf[NI_MAXHOST];
1259 int n;
1260
1261 if (ep < bp)
1262 return;
1263 rr6 = (struct icmp6_router_renum *)bp;
1264 cp = (const char *)(rr6 + 1);
1265
1266 TCHECK(rr6->rr_reserved);
1267 switch (rr6->rr_code) {
1268 case ICMP6_ROUTER_RENUMBERING_COMMAND:
1269 printf("router renum: command");
1270 break;
1271 case ICMP6_ROUTER_RENUMBERING_RESULT:
1272 printf("router renum: result");
1273 break;
1274 case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET:
1275 printf("router renum: sequence number reset");
1276 break;
1277 default:
1278 printf("router renum: code-#%d", rr6->rr_code);
1279 break;
1280 }
1281
1282 printf(", seq=%u", EXTRACT_32BITS(&rr6->rr_seqnum));
1283
1284 if (vflag) {
1285 #define F(x, y) ((rr6->rr_flags) & (x) ? (y) : "")
1286 printf("["); /*]*/
1287 if (rr6->rr_flags) {
1288 printf("%s%s%s%s%s,", F(ICMP6_RR_FLAGS_TEST, "T"),
1289 F(ICMP6_RR_FLAGS_REQRESULT, "R"),
1290 F(ICMP6_RR_FLAGS_FORCEAPPLY, "A"),
1291 F(ICMP6_RR_FLAGS_SPECSITE, "S"),
1292 F(ICMP6_RR_FLAGS_PREVDONE, "P"));
1293 }
1294 printf("seg=%u,", rr6->rr_segnum);
1295 printf("maxdelay=%u", EXTRACT_16BITS(&rr6->rr_maxdelay));
1296 if (rr6->rr_reserved)
1297 printf("rsvd=0x%x", EXTRACT_32BITS(&rr6->rr_reserved));
1298 /*[*/
1299 printf("]");
1300 #undef F
1301 }
1302
1303 if (rr6->rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND) {
1304 match = (struct rr_pco_match *)cp;
1305 cp = (const char *)(match + 1);
1306
1307 TCHECK(match->rpm_prefix);
1308
1309 if (vflag > 1)
1310 printf("\n\t");
1311 else
1312 printf(" ");
1313 printf("match("); /*)*/
1314 switch (match->rpm_code) {
1315 case RPM_PCO_ADD: printf("add"); break;
1316 case RPM_PCO_CHANGE: printf("change"); break;
1317 case RPM_PCO_SETGLOBAL: printf("setglobal"); break;
1318 default: printf("#%u", match->rpm_code); break;
1319 }
1320
1321 if (vflag) {
1322 printf(",ord=%u", match->rpm_ordinal);
1323 printf(",min=%u", match->rpm_minlen);
1324 printf(",max=%u", match->rpm_maxlen);
1325 }
1326 if (inet_ntop(AF_INET6, &match->rpm_prefix, hbuf, sizeof(hbuf)))
1327 printf(",%s/%u", hbuf, match->rpm_matchlen);
1328 else
1329 printf(",?/%u", match->rpm_matchlen);
1330 /*(*/
1331 printf(")");
1332
1333 n = match->rpm_len - 3;
1334 if (n % 4)
1335 goto trunc;
1336 n /= 4;
1337 while (n-- > 0) {
1338 use = (struct rr_pco_use *)cp;
1339 cp = (const char *)(use + 1);
1340
1341 TCHECK(use->rpu_prefix);
1342
1343 if (vflag > 1)
1344 printf("\n\t");
1345 else
1346 printf(" ");
1347 printf("use("); /*)*/
1348 if (use->rpu_flags) {
1349 #define F(x, y) ((use->rpu_flags) & (x) ? (y) : "")
1350 printf("%s%s,",
1351 F(ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME, "V"),
1352 F(ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME, "P"));
1353 #undef F
1354 }
1355 if (vflag) {
1356 printf("mask=0x%x,", use->rpu_ramask);
1357 printf("raflags=0x%x,", use->rpu_raflags);
1358 if (~use->rpu_vltime == 0)
1359 printf("vltime=infty,");
1360 else
1361 printf("vltime=%u,",
1362 EXTRACT_32BITS(&use->rpu_vltime));
1363 if (~use->rpu_pltime == 0)
1364 printf("pltime=infty,");
1365 else
1366 printf("pltime=%u,",
1367 EXTRACT_32BITS(&use->rpu_pltime));
1368 }
1369 if (inet_ntop(AF_INET6, &use->rpu_prefix, hbuf,
1370 sizeof(hbuf)))
1371 printf("%s/%u/%u", hbuf, use->rpu_uselen,
1372 use->rpu_keeplen);
1373 else
1374 printf("?/%u/%u", use->rpu_uselen,
1375 use->rpu_keeplen);
1376 /*(*/
1377 printf(")");
1378 }
1379 }
1380
1381 return;
1382
1383 trunc:
1384 fputs("[|icmp6]", stdout);
1385 }
1386
1387 #endif /* INET6 */
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