2 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
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
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.
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 $";
33 #include <tcpdump-stdinc.h>
38 #include "interface.h"
39 #include "addrtoname.h"
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 *);
62 #define abs(a) ((0 < (a)) ? (a) : -(a))
65 /* inline the various RPL definitions */
66 #define ND_RPL_MESSAGE 0x9B
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"},
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"},
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" },
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"},
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" },
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"},
145 /* mldv2 report types */
146 static struct tok mldv2report2str[] = {
159 static const char *rtpref_str[] = {
166 return rtpref_str[((v & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff];
170 get_lifetime(u_int32_t v)
174 if (v == (u_int32_t)~0UL)
177 snprintf(buf, sizeof(buf), "%u", v);
183 print_lladdr(const u_int8_t *p, size_t l)
185 const u_int8_t *ep, *q;
189 while (l > 0 && q < ep) {
192 printf("%02x", *q++);
197 static int icmp6_cksum(const struct ip6_hdr *ip6, const struct icmp6_hdr *icp,
201 register const u_int16_t *sp;
205 struct in6_addr ph_src;
206 struct in6_addr ph_dst;
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;
222 for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
225 sp = (const u_int16_t *)icp;
227 for (i = 0; i < (len & ~1); i += 2)
231 sum += htons((*(const u_int8_t *)sp) << 8);
234 sum = (sum & 0xffff) + (sum >> 16);
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 */
258 u_int8_t rpl_instanceid;
259 u_int8_t rpl_dagrank;
260 u_int8_t rpl_dagid[16];
264 rpl_print(netdissect_options *ndo,
265 const struct icmp6_hdr *hdr,
266 const u_char *bp, u_int length _U_)
268 struct nd_rpl_dio *dio = (struct nd_rpl_dio *)bp;
270 ND_TCHECK(dio->rpl_dagid);
272 switch(hdr->icmp6_code) {
274 ND_PRINT((ndo, ", DAG Information Solicitation"));
279 ND_PRINT((ndo, ", DAG Information Object"));
285 if(isprint(dio->rpl_dagid[i])) {
286 *d++ = dio->rpl_dagid[i];
288 int cnt=snprintf(d,4,"0x%02x",
294 ND_PRINT((ndo, " [seq:%u,instance:%u,rank:%u,dagid:%s]",
302 ND_PRINT((ndo, ", Destination Advertisement Object"));
307 ND_PRINT((ndo, ", RPL message, unknown code %u",hdr->icmp6_code));
312 ND_PRINT((ndo," [|truncated]"));
319 icmp6_print(netdissect_options *ndo,
320 const u_char *bp, u_int length, const u_char *bp2, int fragmented)
322 const struct icmp6_hdr *dp;
323 const struct ip6_hdr *ip;
324 const struct ip6_hdr *oip;
325 const struct udphdr *ouh;
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. */
336 TCHECK(dp->icmp6_cksum);
338 if (vflag && !fragmented) {
339 int sum = dp->icmp6_cksum;
341 if (TTEST2(bp[0], length)) {
342 sum = icmp6_cksum(ip, dp, length);
344 (void)printf("[bad icmp6 cksum %x!] ", sum);
346 (void)printf("[icmp6 sum ok] ");
350 printf("ICMP6, %s", tok2str(icmp6_type_values,"unknown icmp6 type (%u)",dp->icmp6_type));
352 /* display cosmetics: print the packet length for printer that use the vflag now */
353 if (vflag && (dp->icmp6_type ==
356 ND_NEIGHBOR_ADVERT ||
357 ND_NEIGHBOR_SOLICIT ||
359 ICMP6_HADISCOV_REPLY ||
360 ICMP6_MOBILEPREFIX_ADVERT ))
361 printf(", length %u", length);
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) {
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));
374 case ICMP6_DST_UNREACH_BEYONDSCOPE:
375 printf(" %s, source address %s",
376 ip6addr_string(&oip->ip6_dst),
377 ip6addr_string(&oip->ip6_src));
379 case ICMP6_DST_UNREACH_NOPORT:
380 if ((ouh = get_upperlayer((u_char *)oip, &prot))
384 dport = EXTRACT_16BITS(&ouh->uh_dport);
387 printf(", %s tcp port %s",
388 ip6addr_string(&oip->ip6_dst),
389 tcpport_string(dport));
392 printf(", %s udp port %s",
393 ip6addr_string(&oip->ip6_dst),
394 udpport_string(dport));
397 printf(", %s protocol %d port %d unreachable",
398 ip6addr_string(&oip->ip6_dst),
399 oip->ip6_nxt, dport);
405 print_unknown_data(bp,"\n\t",length);
411 case ICMP6_PACKET_TOO_BIG:
412 TCHECK(dp->icmp6_mtu);
413 printf(", mtu %u", EXTRACT_32BITS(&dp->icmp6_mtu));
415 case ICMP6_TIME_EXCEEDED:
416 TCHECK(oip->ip6_dst);
417 switch (dp->icmp6_code) {
418 case ICMP6_TIME_EXCEED_TRANSIT:
420 ip6addr_string(&oip->ip6_dst));
422 case ICMP6_TIME_EXCEED_REASSEMBLY:
423 printf(" (reassembly)");
426 printf(", unknown code (%u)", dp->icmp6_code);
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));
436 case ICMP6_PARAMPROB_NEXTHEADER:
437 printf(", next header - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
439 case ICMP6_PARAMPROB_OPTION:
440 printf(", option - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
448 case ICMP6_ECHO_REQUEST:
449 case ICMP6_ECHO_REPLY:
450 TCHECK(dp->icmp6_seq);
451 printf(", seq %u", EXTRACT_16BITS(&dp->icmp6_seq));
453 case ICMP6_MEMBERSHIP_QUERY:
454 if (length == MLD_MINLEN) {
455 mld6_print((const u_char *)dp);
456 } else if (length >= MLDV2_MINLEN) {
458 mldv2_query_print((const u_char *)dp, length);
460 printf(" unknown-version (len %u) ", length);
463 case ICMP6_MEMBERSHIP_REPORT:
464 mld6_print((const u_char *)dp);
466 case ICMP6_MEMBERSHIP_REDUCTION:
467 mld6_print((const u_char *)dp);
469 case ND_ROUTER_SOLICIT:
472 icmp6_opt_print((const u_char *)dp + RTSOLLEN,
476 case ND_ROUTER_ADVERT:
479 struct nd_router_advert *p;
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));
492 icmp6_opt_print((const u_char *)dp + RTADVLEN,
496 case ND_NEIGHBOR_SOLICIT:
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));
504 icmp6_opt_print((const u_char *)dp + NDSOLLEN,
509 case ND_NEIGHBOR_ADVERT:
511 struct nd_neighbor_advert *p;
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));
518 printf(", Flags [%s]",
519 bittok2str(icmp6_nd_na_flag_values,
521 EXTRACT_32BITS(&p->nd_na_flags_reserved)));
523 icmp6_opt_print((const u_char *)dp + NDADVLEN,
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);
535 getname6((const u_char*)&RDR(dp)->nd_rd_target));
536 #define REDIRECTLEN 40
538 icmp6_opt_print((const u_char *)dp + REDIRECTLEN,
539 length - REDIRECTLEN);
544 case ICMP6_ROUTER_RENUMBERING:
545 icmp6_rrenum_print(bp, ep);
549 icmp6_nodeinfo_print(length, bp, ep);
554 case ICMP6_V2_MEMBERSHIP_REPORT:
555 mldv2_report_print((const u_char *) dp, length);
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]));
562 case ICMP6_HADISCOV_REPLY:
564 struct in6_addr *in6;
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++) {
573 printf(", %s", ip6addr_string(in6));
577 case ICMP6_MOBILEPREFIX_ADVERT:
579 TCHECK(dp->icmp6_data16[0]);
580 printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
581 if (dp->icmp6_data16[1] & 0xc0)
583 if (dp->icmp6_data16[1] & 0x80)
585 if (dp->icmp6_data16[1] & 0x40)
588 icmp6_opt_print((const u_char *)dp + MPADVLEN,
593 rpl_print(ndo, dp, &dp->icmp6_data8[0], length);
596 printf(", length %u", length);
598 print_unknown_data(bp,"\n\t", length);
602 printf(", length %u", length);
605 fputs("[|icmp6]", stdout);
608 static struct udphdr *
609 get_upperlayer(u_char *bp, u_int *prot)
612 struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
615 struct ip6_frag *fragh;
620 /* 'ep' points to the end of available data. */
623 if (!TTEST(ip6->ip6_nxt))
627 hlen = sizeof(struct ip6_hdr);
635 uh = (struct udphdr *)bp;
636 if (TTEST(uh->uh_dport)) {
644 case IPPROTO_HOPOPTS:
645 case IPPROTO_DSTOPTS:
646 case IPPROTO_ROUTING:
647 hbh = (struct ip6_hbh *)bp;
648 if (!TTEST(hbh->ip6h_len))
651 hlen = (hbh->ip6h_len + 1) << 3;
654 case IPPROTO_FRAGMENT: /* this should be odd, but try anyway */
655 fragh = (struct ip6_frag *)bp;
656 if (!TTEST(fragh->ip6f_offlg))
658 /* fragments with non-zero offset are meaningless */
659 if ((EXTRACT_16BITS(&fragh->ip6f_offlg) & IP6F_OFF_MASK) != 0)
661 nh = fragh->ip6f_nxt;
662 hlen = sizeof(struct ip6_frag);
666 ah = (struct ah *)bp;
667 if (!TTEST(ah->ah_len))
670 hlen = (ah->ah_len + 2) << 2;
673 default: /* unknown or undecodable header */
674 *prot = nh; /* meaningless, but set here anyway */
679 return(NULL); /* should be notreached, though */
683 icmp6_opt_print(const u_char *bp, int resid)
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;
699 #define ECHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) return
702 /* 'ep' points to the end of available data. */
706 op = (struct nd_opt_hdr *)cp;
708 ECHECK(op->nd_opt_len);
711 if (op->nd_opt_len == 0)
713 if (cp + (op->nd_opt_len << 3) > ep)
716 printf("\n\t %s option (%u), length %u (%u): ",
717 tok2str(icmp6_opt_values, "unknown", op->nd_opt_type),
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);
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);
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)));
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);
750 opm = (struct nd_opt_mtu *)op;
751 TCHECK(opm->nd_opt_mtu_mtu);
753 EXTRACT_32BITS(&opm->nd_opt_mtu_mtu),
754 (op->nd_opt_len != 1) ? "bad option length" : "" );
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]);
764 ip6addr_string(&oprd->nd_opt_rdnss_addr[i]));
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));
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));
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) {
789 memcpy(&in6, opri + 1, 8);
793 memcpy(&in6, opri + 1, sizeof(in6));
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)));
806 print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
811 /* do we want to see an additional hexdump ? */
813 print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
815 cp += op->nd_opt_len << 3;
816 resid -= op->nd_opt_len << 3;
821 fputs("[ndp opt]", stdout);
827 mld6_print(const u_char *bp)
829 struct mld6_hdr *mp = (struct mld6_hdr *)bp;
832 /* 'ep' points to the end of available data. */
835 if ((u_char *)mp + sizeof(*mp) > ep)
838 printf("max resp delay: %d ", EXTRACT_16BITS(&mp->mld6_maxdelay));
839 printf("addr: %s", ip6addr_string(&mp->mld6_addr));
843 mldv2_report_print(const u_char *bp, u_int len)
845 struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
846 u_int group, nsrcs, ngroups;
849 /* Minimum len is 8 */
851 printf(" [invalid len %d]", len);
855 TCHECK(icp->icmp6_data16[1]);
856 ngroups = EXTRACT_16BITS(&icp->icmp6_data16[1]);
857 printf(", %d group record(s)", ngroups);
859 /* Print the group records */
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]");
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]",
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);
878 printf(", %d source(s)", nsrcs);
880 /* Print the sources */
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)]));
889 /* Next group record */
890 group += 20 + nsrcs * sizeof(struct in6_addr);
896 (void)printf("[|icmp6]");
901 mldv2_query_print(const u_char *bp, u_int len)
903 struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
909 /* Minimum len is 28 */
911 printf(" [invalid len %d]", len);
914 TCHECK(icp->icmp6_data16[0]);
915 mrc = EXTRACT_16BITS(&icp->icmp6_data16[0]);
919 mrt = ((mrc & 0x0fff) | 0x1000) << (((mrc & 0x7000) >> 12) + 3);
922 (void)printf(" [max resp delay=%d]", mrt);
924 TCHECK2(bp[8], sizeof(struct in6_addr));
925 printf(" [gaddr %s", ip6addr_string(&bp[8]));
933 printf(" robustness=%d", bp[24] & 0x07);
938 qqi = ((bp[25] & 0x0f) | 0x10) << (((bp[25] & 0x70) >> 4) + 3);
940 printf(" qqi=%d", qqi);
944 nsrcs = EXTRACT_16BITS(&bp[26]);
946 if (len < 28 + nsrcs * sizeof(struct in6_addr))
947 printf(" [invalid number of sources]");
948 else if (vflag > 1) {
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)]));
957 printf(", %d source(s)", nsrcs);
962 (void)printf("[|icmp6]");
967 dnsname_print(const u_char *cp, const u_char *ep)
971 /* DNS name decoding - no decompression */
980 while (i-- && cp < ep) {
984 if (cp + 1 < ep && *cp)
990 } else if (cp + 1 == ep && *cp == '\0') {
1003 icmp6_nodeinfo_print(u_int icmp6len, const u_char *bp, const u_char *ep)
1005 struct icmp6_nodeinfo *ni6;
1006 struct icmp6_hdr *dp;
1013 dp = (struct icmp6_hdr *)bp;
1014 ni6 = (struct icmp6_nodeinfo *)bp;
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");
1024 printf(" node information query");
1026 TCHECK2(*dp, sizeof(*ni6));
1027 ni6 = (struct icmp6_nodeinfo *)dp;
1029 switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
1033 case NI_QTYPE_SUPTYPES:
1034 printf("supported qtypes");
1035 i = EXTRACT_16BITS(&ni6->ni_flags);
1037 printf(" [%s]", (i & 0x01) ? "C" : "");
1043 case NI_QTYPE_NODEADDR:
1044 printf("node addresses");
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" : "");
1062 if (ni6->ni_qtype == NI_QTYPE_NOOP ||
1063 ni6->ni_qtype == NI_QTYPE_SUPTYPES) {
1064 if (siz != sizeof(*ni6))
1066 printf(", invalid len");
1073 /* XXX backward compat, icmp-name-lookup-03 */
1074 if (siz == sizeof(*ni6)) {
1075 printf(", 03 draft");
1081 switch (ni6->ni_code) {
1082 case ICMP6_NI_SUBJ_IPV6:
1084 sizeof(*ni6) + sizeof(struct in6_addr)))
1086 if (siz != sizeof(*ni6) + sizeof(struct in6_addr)) {
1088 printf(", invalid subject len");
1091 printf(", subject=%s",
1092 getname6((const u_char *)(ni6 + 1)));
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 */
1100 printf(", 03 draft");
1109 dnsname_print(cp, ep);
1111 case ICMP6_NI_SUBJ_IPV4:
1112 if (!TTEST2(*dp, sizeof(*ni6) + sizeof(struct in_addr)))
1114 if (siz != sizeof(*ni6) + sizeof(struct in_addr)) {
1116 printf(", invalid subject len");
1119 printf(", subject=%s",
1120 getname((const u_char *)(ni6 + 1)));
1123 printf(", unknown subject");
1131 case ICMP6_NI_REPLY:
1132 if (icmp6len > siz) {
1133 printf("[|icmp6: node information reply]");
1139 ni6 = (struct icmp6_nodeinfo *)dp;
1140 printf(" node information reply");
1142 switch (ni6->ni_code) {
1143 case ICMP6_NI_SUCCESS:
1149 case ICMP6_NI_REFUSED:
1152 if (siz != sizeof(*ni6))
1154 printf(", invalid length");
1156 case ICMP6_NI_UNKNOWN:
1159 if (siz != sizeof(*ni6))
1161 printf(", invalid length");
1165 if (ni6->ni_code != ICMP6_NI_SUCCESS) {
1171 switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
1176 if (siz != sizeof(*ni6))
1178 printf(", invalid length");
1180 case NI_QTYPE_SUPTYPES:
1183 printf("supported qtypes");
1184 i = EXTRACT_16BITS(&ni6->ni_flags);
1186 printf(" [%s]", (i & 0x01) ? "C" : "");
1192 cp = (const u_char *)(ni6 + 1) + 4;
1193 if (cp[0] == ep - cp - 1) {
1194 /* icmp-name-lookup-03, pascal string */
1196 printf(", 03 draft");
1205 dnsname_print(cp, ep);
1206 if ((EXTRACT_16BITS(&ni6->ni_flags) & 0x01) != 0)
1207 printf(" [TTL=%u]", *(u_int32_t *)(ni6 + 1));
1209 case NI_QTYPE_NODEADDR:
1212 printf("node addresses");
1215 if (i + sizeof(struct in6_addr) + sizeof(int32_t) > siz)
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);
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" : "");
1248 fputs("[|icmp6]", stdout);
1252 icmp6_rrenum_print(const u_char *bp, const u_char *ep)
1254 struct icmp6_router_renum *rr6;
1256 struct rr_pco_match *match;
1257 struct rr_pco_use *use;
1258 char hbuf[NI_MAXHOST];
1263 rr6 = (struct icmp6_router_renum *)bp;
1264 cp = (const char *)(rr6 + 1);
1266 TCHECK(rr6->rr_reserved);
1267 switch (rr6->rr_code) {
1268 case ICMP6_ROUTER_RENUMBERING_COMMAND:
1269 printf("router renum: command");
1271 case ICMP6_ROUTER_RENUMBERING_RESULT:
1272 printf("router renum: result");
1274 case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET:
1275 printf("router renum: sequence number reset");
1278 printf("router renum: code-#%d", rr6->rr_code);
1282 printf(", seq=%u", EXTRACT_32BITS(&rr6->rr_seqnum));
1285 #define F(x, y) ((rr6->rr_flags) & (x) ? (y) : "")
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"));
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));
1303 if (rr6->rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND) {
1304 match = (struct rr_pco_match *)cp;
1305 cp = (const char *)(match + 1);
1307 TCHECK(match->rpm_prefix);
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;
1322 printf(",ord=%u", match->rpm_ordinal);
1323 printf(",min=%u", match->rpm_minlen);
1324 printf(",max=%u", match->rpm_maxlen);
1326 if (inet_ntop(AF_INET6, &match->rpm_prefix, hbuf, sizeof(hbuf)))
1327 printf(",%s/%u", hbuf, match->rpm_matchlen);
1329 printf(",?/%u", match->rpm_matchlen);
1333 n = match->rpm_len - 3;
1338 use = (struct rr_pco_use *)cp;
1339 cp = (const char *)(use + 1);
1341 TCHECK(use->rpu_prefix);
1347 printf("use("); /*)*/
1348 if (use->rpu_flags) {
1349 #define F(x, y) ((use->rpu_flags) & (x) ? (y) : "")
1351 F(ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME, "V"),
1352 F(ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME, "P"));
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,");
1361 printf("vltime=%u,",
1362 EXTRACT_32BITS(&use->rpu_vltime));
1363 if (~use->rpu_pltime == 0)
1364 printf("pltime=infty,");
1366 printf("pltime=%u,",
1367 EXTRACT_32BITS(&use->rpu_pltime));
1369 if (inet_ntop(AF_INET6, &use->rpu_prefix, hbuf,
1371 printf("%s/%u/%u", hbuf, use->rpu_uselen,
1374 printf("?/%u/%u", use->rpu_uselen,
1384 fputs("[|icmp6]", stdout);