auto import from //depot/cupcake/@135843
diff --git a/print-icmp6.c b/print-icmp6.c
new file mode 100644
index 0000000..c503924
--- /dev/null
+++ b/print-icmp6.c
@@ -0,0 +1,1287 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-icmp6.c,v 1.79.2.6 2005/09/05 09:29:28 guy Exp $";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef INET6
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+#include "ip6.h"
+#include "icmp6.h"
+#include "ipproto.h"
+
+#include "udp.h"
+#include "ah.h"
+
+static const char *get_rtpref(u_int);
+static const char *get_lifetime(u_int32_t);
+static void print_lladdr(const u_char *, size_t);
+static void icmp6_opt_print(const u_char *, int);
+static void mld6_print(const u_char *);
+static void mldv2_report_print(const u_char *, u_int);
+static void mldv2_query_print(const u_char *, u_int);
+static struct udphdr *get_upperlayer(u_char *, u_int *);
+static void dnsname_print(const u_char *, const u_char *);
+static void icmp6_nodeinfo_print(u_int, const u_char *, const u_char *);
+static void icmp6_rrenum_print(const u_char *, const u_char *);
+
+#ifndef abs
+#define abs(a) ((0 < (a)) ? (a) : -(a))
+#endif
+
+static struct tok icmp6_type_values[] = {
+ { ICMP6_DST_UNREACH, "destination unreachable"},
+ { ICMP6_PACKET_TOO_BIG, "packet too big"},
+ { ICMP6_TIME_EXCEEDED, "time exceeded in-transit"},
+ { ICMP6_PARAM_PROB, "parameter problem"},
+ { ICMP6_ECHO_REQUEST, "echo request"},
+ { ICMP6_ECHO_REPLY, "echo reply"},
+ { MLD6_LISTENER_QUERY, "multicast listener query"},
+ { MLD6_LISTENER_REPORT, "multicast listener report"},
+ { MLD6_LISTENER_DONE, "multicast listener done"},
+ { ND_ROUTER_SOLICIT, "router solicitation"},
+ { ND_ROUTER_ADVERT, "router advertisement"},
+ { ND_NEIGHBOR_SOLICIT, "neighbor solicitation"},
+ { ND_NEIGHBOR_ADVERT, "neighbor advertisement"},
+ { ND_REDIRECT, "redirect"},
+ { ICMP6_ROUTER_RENUMBERING, "router renumbering"},
+ { IND_SOLICIT, "inverse neighbor solicitation"},
+ { IND_ADVERT, "inverse neighbor advertisement"},
+ { MLDV2_LISTENER_REPORT, "multicast listener report v2"},
+ { ICMP6_HADISCOV_REQUEST, "ha discovery request"},
+ { ICMP6_HADISCOV_REPLY, "ha discovery reply"},
+ { ICMP6_MOBILEPREFIX_SOLICIT, "mobile router solicitation"},
+ { ICMP6_MOBILEPREFIX_ADVERT, "mobile router advertisement"},
+ { ICMP6_WRUREQUEST, "who-are-you request"},
+ { ICMP6_WRUREPLY, "who-are-you reply"},
+ { ICMP6_NI_QUERY, "node information query"},
+ { ICMP6_NI_REPLY, "node information reply"},
+ { MLD6_MTRACE, "mtrace message"},
+ { MLD6_MTRACE_RESP, "mtrace response"},
+ { 0, NULL }
+};
+
+static struct tok icmp6_dst_unreach_code_values[] = {
+ { ICMP6_DST_UNREACH_NOROUTE, "unreachable route" },
+ { ICMP6_DST_UNREACH_ADMIN, " unreachable prohibited"},
+ { ICMP6_DST_UNREACH_BEYONDSCOPE, "beyond scope"},
+ { ICMP6_DST_UNREACH_ADDR, "unreachable address"},
+ { ICMP6_DST_UNREACH_NOPORT, "unreachable port"},
+ { 0, NULL }
+};
+
+static struct tok icmp6_opt_pi_flag_values[] = {
+ { ND_OPT_PI_FLAG_ONLINK, "onlink" },
+ { ND_OPT_PI_FLAG_AUTO, "auto" },
+ { ND_OPT_PI_FLAG_ROUTER, "router" },
+ { 0, NULL }
+};
+
+static struct tok icmp6_opt_ra_flag_values[] = {
+ { ND_RA_FLAG_MANAGED, "managed" },
+ { ND_RA_FLAG_OTHER, "other stateful"},
+ { ND_RA_FLAG_HOME_AGENT, "home agent"},
+ { 0, NULL }
+};
+
+static struct tok icmp6_nd_na_flag_values[] = {
+ { ND_NA_FLAG_ROUTER, "router" },
+ { ND_NA_FLAG_SOLICITED, "solicited" },
+ { ND_NA_FLAG_OVERRIDE, "override" },
+ { 0, NULL }
+};
+
+
+static struct tok icmp6_opt_values[] = {
+ { ND_OPT_SOURCE_LINKADDR, "source link-address"},
+ { ND_OPT_TARGET_LINKADDR, "destination link-address"},
+ { ND_OPT_PREFIX_INFORMATION, "prefix info"},
+ { ND_OPT_REDIRECTED_HEADER, "redirected header"},
+ { ND_OPT_MTU, "mtu"},
+ { ND_OPT_ADVINTERVAL, "advertisement interval"},
+ { ND_OPT_HOMEAGENT_INFO, "homeagent information"},
+ { ND_OPT_ROUTE_INFO, "route info"},
+ { 0, NULL }
+};
+
+/* mldv2 report types */
+static struct tok mldv2report2str[] = {
+ { 1, "is_in" },
+ { 2, "is_ex" },
+ { 3, "to_in" },
+ { 4, "to_ex" },
+ { 5, "allow" },
+ { 6, "block" },
+ { 0, NULL }
+};
+
+static const char *
+get_rtpref(u_int v)
+{
+ static const char *rtpref_str[] = {
+ "medium", /* 00 */
+ "high", /* 01 */
+ "rsv", /* 10 */
+ "low" /* 11 */
+ };
+
+ return rtpref_str[((v & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff];
+}
+
+static const char *
+get_lifetime(u_int32_t v)
+{
+ static char buf[20];
+
+ if (v == (u_int32_t)~0UL)
+ return "infinity";
+ else {
+ snprintf(buf, sizeof(buf), "%u", v);
+ return buf;
+ }
+}
+
+static void
+print_lladdr(const u_int8_t *p, size_t l)
+{
+ const u_int8_t *ep, *q;
+
+ q = p;
+ ep = p + l;
+ while (l > 0 && q < ep) {
+ if (q > p)
+ printf(":");
+ printf("%02x", *q++);
+ l--;
+ }
+}
+
+static int icmp6_cksum(const struct ip6_hdr *ip6, const struct icmp6_hdr *icp,
+ u_int len)
+{
+ size_t i;
+ register const u_int16_t *sp;
+ u_int32_t sum;
+ union {
+ struct {
+ struct in6_addr ph_src;
+ struct in6_addr ph_dst;
+ u_int32_t ph_len;
+ u_int8_t ph_zero[3];
+ u_int8_t ph_nxt;
+ } ph;
+ u_int16_t pa[20];
+ } phu;
+
+ /* pseudo-header */
+ memset(&phu, 0, sizeof(phu));
+ phu.ph.ph_src = ip6->ip6_src;
+ phu.ph.ph_dst = ip6->ip6_dst;
+ phu.ph.ph_len = htonl(len);
+ phu.ph.ph_nxt = IPPROTO_ICMPV6;
+
+ sum = 0;
+ for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
+ sum += phu.pa[i];
+
+ sp = (const u_int16_t *)icp;
+
+ for (i = 0; i < (len & ~1); i += 2)
+ sum += *sp++;
+
+ if (len & 1)
+ sum += htons((*(const u_int8_t *)sp) << 8);
+
+ while (sum > 0xffff)
+ sum = (sum & 0xffff) + (sum >> 16);
+ sum = ~sum & 0xffff;
+
+ return (sum);
+}
+
+void
+icmp6_print(const u_char *bp, u_int length, const u_char *bp2, int fragmented)
+{
+ const struct icmp6_hdr *dp;
+ const struct ip6_hdr *ip;
+ const struct ip6_hdr *oip;
+ const struct udphdr *ouh;
+ int dport;
+ const u_char *ep;
+ u_int prot;
+
+ dp = (struct icmp6_hdr *)bp;
+ ip = (struct ip6_hdr *)bp2;
+ oip = (struct ip6_hdr *)(dp + 1);
+ /* 'ep' points to the end of available data. */
+ ep = snapend;
+
+ TCHECK(dp->icmp6_cksum);
+
+ if (vflag && !fragmented) {
+ int sum = dp->icmp6_cksum;
+
+ if (TTEST2(bp[0], length)) {
+ sum = icmp6_cksum(ip, dp, length);
+ if (sum != 0)
+ (void)printf("[bad icmp6 cksum %x!] ", sum);
+ else
+ (void)printf("[icmp6 sum ok] ");
+ }
+ }
+
+ printf("ICMP6, %s", tok2str(icmp6_type_values,"unknown icmp6 type (%u)",dp->icmp6_type));
+
+ /* display cosmetics: print the packet length for printer that use the vflag now */
+ if (vflag && (dp->icmp6_type ==
+ ND_ROUTER_SOLICIT ||
+ ND_ROUTER_ADVERT ||
+ ND_NEIGHBOR_ADVERT ||
+ ND_NEIGHBOR_SOLICIT ||
+ ND_REDIRECT ||
+ ICMP6_HADISCOV_REPLY ||
+ ICMP6_MOBILEPREFIX_ADVERT ))
+ printf(", length %u", length);
+
+ switch (dp->icmp6_type) {
+ case ICMP6_DST_UNREACH:
+ TCHECK(oip->ip6_dst);
+ printf(", %s", tok2str(icmp6_dst_unreach_code_values,"unknown unreach code (%u)",dp->icmp6_code));
+ switch (dp->icmp6_code) {
+
+ case ICMP6_DST_UNREACH_NOROUTE: /* fall through */
+ case ICMP6_DST_UNREACH_ADMIN:
+ case ICMP6_DST_UNREACH_ADDR:
+ printf(" %s",ip6addr_string(&oip->ip6_dst));
+ break;
+ case ICMP6_DST_UNREACH_BEYONDSCOPE:
+ printf(" %s, source address %s",
+ ip6addr_string(&oip->ip6_dst),
+ ip6addr_string(&oip->ip6_src));
+ break;
+ case ICMP6_DST_UNREACH_NOPORT:
+ if ((ouh = get_upperlayer((u_char *)oip, &prot))
+ == NULL)
+ goto trunc;
+
+ dport = EXTRACT_16BITS(&ouh->uh_dport);
+ switch (prot) {
+ case IPPROTO_TCP:
+ printf(", %s tcp port %s",
+ ip6addr_string(&oip->ip6_dst),
+ tcpport_string(dport));
+ break;
+ case IPPROTO_UDP:
+ printf(", %s udp port %s",
+ ip6addr_string(&oip->ip6_dst),
+ udpport_string(dport));
+ break;
+ default:
+ printf(", %s protocol %d port %d unreachable",
+ ip6addr_string(&oip->ip6_dst),
+ oip->ip6_nxt, dport);
+ break;
+ }
+ break;
+ default:
+ if (vflag <= 1) {
+ print_unknown_data(bp,"\n\t",length);
+ return;
+ }
+ break;
+ }
+ break;
+ case ICMP6_PACKET_TOO_BIG:
+ TCHECK(dp->icmp6_mtu);
+ printf(", mtu %u", EXTRACT_32BITS(&dp->icmp6_mtu));
+ break;
+ case ICMP6_TIME_EXCEEDED:
+ TCHECK(oip->ip6_dst);
+ switch (dp->icmp6_code) {
+ case ICMP6_TIME_EXCEED_TRANSIT:
+ printf(" for %s",
+ ip6addr_string(&oip->ip6_dst));
+ break;
+ case ICMP6_TIME_EXCEED_REASSEMBLY:
+ printf(" (reassembly)");
+ break;
+ default:
+ printf(", unknown code (%u)", dp->icmp6_code);
+ break;
+ }
+ break;
+ case ICMP6_PARAM_PROB:
+ TCHECK(oip->ip6_dst);
+ switch (dp->icmp6_code) {
+ case ICMP6_PARAMPROB_HEADER:
+ printf(", errorneous - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
+ break;
+ case ICMP6_PARAMPROB_NEXTHEADER:
+ printf(", next header - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
+ break;
+ case ICMP6_PARAMPROB_OPTION:
+ printf(", option - octet %u", EXTRACT_32BITS(&dp->icmp6_pptr));
+ break;
+ default:
+ printf(", code-#%d",
+ dp->icmp6_code);
+ break;
+ }
+ break;
+ case ICMP6_ECHO_REQUEST:
+ case ICMP6_ECHO_REPLY:
+ TCHECK(dp->icmp6_seq);
+ printf(", seq %u", EXTRACT_16BITS(&dp->icmp6_seq));
+ break;
+ case ICMP6_MEMBERSHIP_QUERY:
+ if (length == MLD_MINLEN) {
+ mld6_print((const u_char *)dp);
+ } else if (length >= MLDV2_MINLEN) {
+ printf("v2 ");
+ mldv2_query_print((const u_char *)dp, length);
+ } else {
+ printf(" unknown-version (len %u) ", length);
+ }
+ break;
+ case ICMP6_MEMBERSHIP_REPORT:
+ mld6_print((const u_char *)dp);
+ break;
+ case ICMP6_MEMBERSHIP_REDUCTION:
+ mld6_print((const u_char *)dp);
+ break;
+ case ND_ROUTER_SOLICIT:
+#define RTSOLLEN 8
+ if (vflag) {
+ icmp6_opt_print((const u_char *)dp + RTSOLLEN,
+ length - RTSOLLEN);
+ }
+ break;
+ case ND_ROUTER_ADVERT:
+#define RTADVLEN 16
+ if (vflag) {
+ struct nd_router_advert *p;
+
+ p = (struct nd_router_advert *)dp;
+ TCHECK(p->nd_ra_retransmit);
+ printf("\n\thop limit %u, Flags [%s]" \
+ ", pref %s, router lifetime %us, reachable time %us, retrans time %us",
+ (u_int)p->nd_ra_curhoplimit,
+ bittok2str(icmp6_opt_ra_flag_values,"none",(p->nd_ra_flags_reserved)),
+ get_rtpref(p->nd_ra_flags_reserved),
+ EXTRACT_16BITS(&p->nd_ra_router_lifetime),
+ EXTRACT_32BITS(&p->nd_ra_reachable),
+ EXTRACT_32BITS(&p->nd_ra_retransmit));
+
+ icmp6_opt_print((const u_char *)dp + RTADVLEN,
+ length - RTADVLEN);
+ }
+ break;
+ case ND_NEIGHBOR_SOLICIT:
+ {
+ struct nd_neighbor_solicit *p;
+ p = (struct nd_neighbor_solicit *)dp;
+ TCHECK(p->nd_ns_target);
+ printf(", who has %s", ip6addr_string(&p->nd_ns_target));
+ if (vflag) {
+#define NDSOLLEN 24
+ icmp6_opt_print((const u_char *)dp + NDSOLLEN,
+ length - NDSOLLEN);
+ }
+ }
+ break;
+ case ND_NEIGHBOR_ADVERT:
+ {
+ struct nd_neighbor_advert *p;
+
+ p = (struct nd_neighbor_advert *)dp;
+ TCHECK(p->nd_na_target);
+ printf(", tgt is %s",
+ ip6addr_string(&p->nd_na_target));
+ if (vflag) {
+ printf(", Flags [%s]",
+ bittok2str(icmp6_nd_na_flag_values,
+ "none",
+ EXTRACT_32BITS(&p->nd_na_flags_reserved)));
+#define NDADVLEN 24
+ icmp6_opt_print((const u_char *)dp + NDADVLEN,
+ length - NDADVLEN);
+#undef NDADVLEN
+ }
+ }
+ break;
+ case ND_REDIRECT:
+#define RDR(i) ((struct nd_redirect *)(i))
+ TCHECK(RDR(dp)->nd_rd_dst);
+ printf(", %s", getname6((const u_char *)&RDR(dp)->nd_rd_dst));
+ TCHECK(RDR(dp)->nd_rd_target);
+ printf(" to %s",
+ getname6((const u_char*)&RDR(dp)->nd_rd_target));
+#define REDIRECTLEN 40
+ if (vflag) {
+ icmp6_opt_print((const u_char *)dp + REDIRECTLEN,
+ length - REDIRECTLEN);
+ }
+ break;
+#undef REDIRECTLEN
+#undef RDR
+ case ICMP6_ROUTER_RENUMBERING:
+ icmp6_rrenum_print(bp, ep);
+ break;
+ case ICMP6_NI_QUERY:
+ case ICMP6_NI_REPLY:
+ icmp6_nodeinfo_print(length, bp, ep);
+ break;
+ case IND_SOLICIT:
+ case IND_ADVERT:
+ break;
+ case ICMP6_V2_MEMBERSHIP_REPORT:
+ mldv2_report_print((const u_char *) dp, length);
+ break;
+ case ICMP6_MOBILEPREFIX_SOLICIT: /* fall through */
+ case ICMP6_HADISCOV_REQUEST:
+ TCHECK(dp->icmp6_data16[0]);
+ printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
+ break;
+ case ICMP6_HADISCOV_REPLY:
+ if (vflag) {
+ struct in6_addr *in6;
+ u_char *cp;
+
+ TCHECK(dp->icmp6_data16[0]);
+ printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
+ cp = (u_char *)dp + length;
+ in6 = (struct in6_addr *)(dp + 1);
+ for (; (u_char *)in6 < cp; in6++) {
+ TCHECK(*in6);
+ printf(", %s", ip6addr_string(in6));
+ }
+ }
+ break;
+ case ICMP6_MOBILEPREFIX_ADVERT:
+ if (vflag) {
+ TCHECK(dp->icmp6_data16[0]);
+ printf(", id 0x%04x", EXTRACT_16BITS(&dp->icmp6_data16[0]));
+ if (dp->icmp6_data16[1] & 0xc0)
+ printf(" ");
+ if (dp->icmp6_data16[1] & 0x80)
+ printf("M");
+ if (dp->icmp6_data16[1] & 0x40)
+ printf("O");
+#define MPADVLEN 8
+ icmp6_opt_print((const u_char *)dp + MPADVLEN,
+ length - MPADVLEN);
+ }
+ break;
+ default:
+ printf(", length %u", length);
+ if (vflag <= 1)
+ print_unknown_data(bp,"\n\t", length);
+ return;
+ }
+ if (!vflag)
+ printf(", length %u", length);
+ return;
+trunc:
+ fputs("[|icmp6]", stdout);
+}
+
+static struct udphdr *
+get_upperlayer(u_char *bp, u_int *prot)
+{
+ const u_char *ep;
+ struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
+ struct udphdr *uh;
+ struct ip6_hbh *hbh;
+ struct ip6_frag *fragh;
+ struct ah *ah;
+ u_int nh;
+ int hlen;
+
+ /* 'ep' points to the end of available data. */
+ ep = snapend;
+
+ if (!TTEST(ip6->ip6_nxt))
+ return NULL;
+
+ nh = ip6->ip6_nxt;
+ hlen = sizeof(struct ip6_hdr);
+
+ while (bp < ep) {
+ bp += hlen;
+
+ switch(nh) {
+ case IPPROTO_UDP:
+ case IPPROTO_TCP:
+ uh = (struct udphdr *)bp;
+ if (TTEST(uh->uh_dport)) {
+ *prot = nh;
+ return(uh);
+ }
+ else
+ return(NULL);
+ /* NOTREACHED */
+
+ case IPPROTO_HOPOPTS:
+ case IPPROTO_DSTOPTS:
+ case IPPROTO_ROUTING:
+ hbh = (struct ip6_hbh *)bp;
+ if (!TTEST(hbh->ip6h_len))
+ return(NULL);
+ nh = hbh->ip6h_nxt;
+ hlen = (hbh->ip6h_len + 1) << 3;
+ break;
+
+ case IPPROTO_FRAGMENT: /* this should be odd, but try anyway */
+ fragh = (struct ip6_frag *)bp;
+ if (!TTEST(fragh->ip6f_offlg))
+ return(NULL);
+ /* fragments with non-zero offset are meaningless */
+ if ((EXTRACT_16BITS(&fragh->ip6f_offlg) & IP6F_OFF_MASK) != 0)
+ return(NULL);
+ nh = fragh->ip6f_nxt;
+ hlen = sizeof(struct ip6_frag);
+ break;
+
+ case IPPROTO_AH:
+ ah = (struct ah *)bp;
+ if (!TTEST(ah->ah_len))
+ return(NULL);
+ nh = ah->ah_nxt;
+ hlen = (ah->ah_len + 2) << 2;
+ break;
+
+ default: /* unknown or undecodable header */
+ *prot = nh; /* meaningless, but set here anyway */
+ return(NULL);
+ }
+ }
+
+ return(NULL); /* should be notreached, though */
+}
+
+static void
+icmp6_opt_print(const u_char *bp, int resid)
+{
+ const struct nd_opt_hdr *op;
+ const struct nd_opt_hdr *opl; /* why there's no struct? */
+ const struct nd_opt_prefix_info *opp;
+ const struct icmp6_opts_redirect *opr;
+ const struct nd_opt_mtu *opm;
+ const struct nd_opt_advinterval *opa;
+ const struct nd_opt_homeagent_info *oph;
+ const struct nd_opt_route_info *opri;
+ const u_char *cp, *ep;
+ struct in6_addr in6, *in6p;
+ size_t l;
+
+#define ECHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) return
+
+ cp = bp;
+ /* 'ep' points to the end of available data. */
+ ep = snapend;
+
+ while (cp < ep) {
+ op = (struct nd_opt_hdr *)cp;
+
+ ECHECK(op->nd_opt_len);
+ if (resid <= 0)
+ return;
+ if (op->nd_opt_len == 0)
+ goto trunc;
+ if (cp + (op->nd_opt_len << 3) > ep)
+ goto trunc;
+
+ printf("\n\t %s option (%u), length %u (%u): ",
+ tok2str(icmp6_opt_values, "unknown", op->nd_opt_type),
+ op->nd_opt_type,
+ op->nd_opt_len << 3,
+ op->nd_opt_len);
+
+ switch (op->nd_opt_type) {
+ case ND_OPT_SOURCE_LINKADDR:
+ opl = (struct nd_opt_hdr *)op;
+ l = (op->nd_opt_len << 3) - 2;
+ print_lladdr(cp + 2, l);
+ break;
+ case ND_OPT_TARGET_LINKADDR:
+ opl = (struct nd_opt_hdr *)op;
+ l = (op->nd_opt_len << 3) - 2;
+ print_lladdr(cp + 2, l);
+ break;
+ case ND_OPT_PREFIX_INFORMATION:
+ opp = (struct nd_opt_prefix_info *)op;
+ TCHECK(opp->nd_opt_pi_prefix);
+ printf("%s/%u%s, Flags [%s], valid time %ss",
+ ip6addr_string(&opp->nd_opt_pi_prefix),
+ opp->nd_opt_pi_prefix_len,
+ (op->nd_opt_len != 4) ? "badlen" : "",
+ bittok2str(icmp6_opt_pi_flag_values, "none", opp->nd_opt_pi_flags_reserved),
+ get_lifetime(EXTRACT_32BITS(&opp->nd_opt_pi_valid_time)));
+ printf(", pref. time %ss", get_lifetime(EXTRACT_32BITS(&opp->nd_opt_pi_preferred_time)));
+ break;
+ case ND_OPT_REDIRECTED_HEADER:
+ opr = (struct icmp6_opts_redirect *)op;
+ print_unknown_data(bp,"\n\t ",op->nd_opt_len<<3);
+ /* xxx */
+ break;
+ case ND_OPT_MTU:
+ opm = (struct nd_opt_mtu *)op;
+ TCHECK(opm->nd_opt_mtu_mtu);
+ printf(" %u%s",
+ EXTRACT_32BITS(&opm->nd_opt_mtu_mtu),
+ (op->nd_opt_len != 1) ? "bad option length" : "" );
+ break;
+ case ND_OPT_ADVINTERVAL:
+ opa = (struct nd_opt_advinterval *)op;
+ TCHECK(opa->nd_opt_adv_interval);
+ printf(" %us", EXTRACT_32BITS(&opa->nd_opt_adv_interval));
+ break;
+ case ND_OPT_HOMEAGENT_INFO:
+ oph = (struct nd_opt_homeagent_info *)op;
+ TCHECK(oph->nd_opt_hai_lifetime);
+ printf(" preference %u, lifetime %u",
+ EXTRACT_16BITS(&oph->nd_opt_hai_preference),
+ EXTRACT_16BITS(&oph->nd_opt_hai_lifetime));
+ break;
+ case ND_OPT_ROUTE_INFO:
+ opri = (struct nd_opt_route_info *)op;
+ TCHECK(opri->nd_opt_rti_lifetime);
+ memset(&in6, 0, sizeof(in6));
+ in6p = (struct in6_addr *)(opri + 1);
+ switch (op->nd_opt_len) {
+ case 1:
+ break;
+ case 2:
+ TCHECK2(*in6p, 8);
+ memcpy(&in6, opri + 1, 8);
+ break;
+ case 3:
+ TCHECK(*in6p);
+ memcpy(&in6, opri + 1, sizeof(in6));
+ break;
+ default:
+ goto trunc;
+ }
+ printf(" %s/%u", ip6addr_string(&in6),
+ opri->nd_opt_rti_prefixlen);
+ printf(", pref=%s", get_rtpref(opri->nd_opt_rti_flags));
+ printf(", lifetime=%s",
+ get_lifetime(EXTRACT_32BITS(&opri->nd_opt_rti_lifetime)));
+ break;
+ default:
+ if (vflag <= 1) {
+ print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
+ return;
+ }
+ break;
+ }
+ /* do we want to see an additional hexdump ? */
+ if (vflag> 1)
+ print_unknown_data(cp+2,"\n\t ", (op->nd_opt_len << 3) - 2); /* skip option header */
+
+ cp += op->nd_opt_len << 3;
+ resid -= op->nd_opt_len << 3;
+ }
+ return;
+
+ trunc:
+ fputs("[ndp opt]", stdout);
+ return;
+#undef ECHECK
+}
+
+static void
+mld6_print(const u_char *bp)
+{
+ struct mld6_hdr *mp = (struct mld6_hdr *)bp;
+ const u_char *ep;
+
+ /* 'ep' points to the end of available data. */
+ ep = snapend;
+
+ if ((u_char *)mp + sizeof(*mp) > ep)
+ return;
+
+ printf("max resp delay: %d ", EXTRACT_16BITS(&mp->mld6_maxdelay));
+ printf("addr: %s", ip6addr_string(&mp->mld6_addr));
+}
+
+static void
+mldv2_report_print(const u_char *bp, u_int len)
+{
+ struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
+ u_int group, nsrcs, ngroups;
+ u_int i, j;
+
+ /* Minimum len is 8 */
+ if (len < 8) {
+ printf(" [invalid len %d]", len);
+ return;
+ }
+
+ TCHECK(icp->icmp6_data16[1]);
+ ngroups = ntohs(icp->icmp6_data16[1]);
+ printf(", %d group record(s)", ngroups);
+ if (vflag > 0) {
+ /* Print the group records */
+ group = 8;
+ for (i = 0; i < ngroups; i++) {
+ /* type(1) + auxlen(1) + numsrc(2) + grp(16) */
+ if (len < group + 20) {
+ printf(" [invalid number of groups]");
+ return;
+ }
+ TCHECK2(bp[group + 4], sizeof(struct in6_addr));
+ printf(" [gaddr %s", ip6addr_string(&bp[group + 4]));
+ printf(" %s", tok2str(mldv2report2str, " [v2-report-#%d]",
+ bp[group]));
+ nsrcs = (bp[group + 2] << 8) + bp[group + 3];
+ /* Check the number of sources and print them */
+ if (len < group + 20 + (nsrcs * sizeof(struct in6_addr))) {
+ printf(" [invalid number of sources %d]", nsrcs);
+ return;
+ }
+ if (vflag == 1)
+ printf(", %d source(s)", nsrcs);
+ else {
+ /* Print the sources */
+ (void)printf(" {");
+ for (j = 0; j < nsrcs; j++) {
+ TCHECK2(bp[group + 20 + j * sizeof(struct in6_addr)],
+ sizeof(struct in6_addr));
+ printf(" %s", ip6addr_string(&bp[group + 20 + j * sizeof(struct in6_addr)]));
+ }
+ (void)printf(" }");
+ }
+ /* Next group record */
+ group += 20 + nsrcs * sizeof(struct in6_addr);
+ printf("]");
+ }
+ }
+ return;
+trunc:
+ (void)printf("[|icmp6]");
+ return;
+}
+
+static void
+mldv2_query_print(const u_char *bp, u_int len)
+{
+ struct icmp6_hdr *icp = (struct icmp6_hdr *) bp;
+ u_int mrc;
+ int mrt, qqi;
+ u_int nsrcs;
+ register u_int i;
+
+ /* Minimum len is 28 */
+ if (len < 28) {
+ printf(" [invalid len %d]", len);
+ return;
+ }
+ TCHECK(icp->icmp6_data16[0]);
+ mrc = ntohs(icp->icmp6_data16[0]);
+ if (mrc < 32768) {
+ mrt = mrc;
+ } else {
+ mrt = ((mrc & 0x0fff) | 0x1000) << (((mrc & 0x7000) >> 12) + 3);
+ }
+ if (vflag) {
+ (void)printf(" [max resp delay=%d]", mrt);
+ }
+ TCHECK2(bp[8], sizeof(struct in6_addr));
+ printf(" [gaddr %s", ip6addr_string(&bp[8]));
+
+ if (vflag) {
+ TCHECK(bp[25]);
+ if (bp[24] & 0x08) {
+ printf(" sflag");
+ }
+ if (bp[24] & 0x07) {
+ printf(" robustness=%d", bp[24] & 0x07);
+ }
+ if (bp[25] < 128) {
+ qqi = bp[25];
+ } else {
+ qqi = ((bp[25] & 0x0f) | 0x10) << (((bp[25] & 0x70) >> 4) + 3);
+ }
+ printf(" qqi=%d", qqi);
+ }
+
+ TCHECK2(bp[26], 2);
+ nsrcs = ntohs(*(u_short *)&bp[26]);
+ if (nsrcs > 0) {
+ if (len < 28 + nsrcs * sizeof(struct in6_addr))
+ printf(" [invalid number of sources]");
+ else if (vflag > 1) {
+ printf(" {");
+ for (i = 0; i < nsrcs; i++) {
+ TCHECK2(bp[28 + i * sizeof(struct in6_addr)],
+ sizeof(struct in6_addr));
+ printf(" %s", ip6addr_string(&bp[28 + i * sizeof(struct in6_addr)]));
+ }
+ printf(" }");
+ } else
+ printf(", %d source(s)", nsrcs);
+ }
+ printf("]");
+ return;
+trunc:
+ (void)printf("[|icmp6]");
+ return;
+}
+
+void
+dnsname_print(const u_char *cp, const u_char *ep)
+{
+ int i;
+
+ /* DNS name decoding - no decompression */
+ printf(", \"");
+ while (cp < ep) {
+ i = *cp++;
+ if (i) {
+ if (i > ep - cp) {
+ printf("???");
+ break;
+ }
+ while (i-- && cp < ep) {
+ safeputchar(*cp);
+ cp++;
+ }
+ if (cp + 1 < ep && *cp)
+ printf(".");
+ } else {
+ if (cp == ep) {
+ /* FQDN */
+ printf(".");
+ } else if (cp + 1 == ep && *cp == '\0') {
+ /* truncated */
+ } else {
+ /* invalid */
+ printf("???");
+ }
+ break;
+ }
+ }
+ printf("\"");
+}
+
+static void
+icmp6_nodeinfo_print(u_int icmp6len, const u_char *bp, const u_char *ep)
+{
+ struct icmp6_nodeinfo *ni6;
+ struct icmp6_hdr *dp;
+ const u_char *cp;
+ size_t siz, i;
+ int needcomma;
+
+ if (ep < bp)
+ return;
+ dp = (struct icmp6_hdr *)bp;
+ ni6 = (struct icmp6_nodeinfo *)bp;
+ siz = ep - bp;
+
+ switch (ni6->ni_type) {
+ case ICMP6_NI_QUERY:
+ if (siz == sizeof(*dp) + 4) {
+ /* KAME who-are-you */
+ printf(" who-are-you request");
+ break;
+ }
+ printf(" node information query");
+
+ TCHECK2(*dp, sizeof(*ni6));
+ ni6 = (struct icmp6_nodeinfo *)dp;
+ printf(" ("); /*)*/
+ switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
+ case NI_QTYPE_NOOP:
+ printf("noop");
+ break;
+ case NI_QTYPE_SUPTYPES:
+ printf("supported qtypes");
+ i = EXTRACT_16BITS(&ni6->ni_flags);
+ if (i)
+ printf(" [%s]", (i & 0x01) ? "C" : "");
+ break;
+ break;
+ case NI_QTYPE_FQDN:
+ printf("DNS name");
+ break;
+ case NI_QTYPE_NODEADDR:
+ printf("node addresses");
+ i = ni6->ni_flags;
+ if (!i)
+ break;
+ /* NI_NODEADDR_FLAG_TRUNCATE undefined for query */
+ printf(" [%s%s%s%s%s%s]",
+ (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
+ (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
+ (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
+ (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
+ (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
+ (i & NI_NODEADDR_FLAG_ALL) ? "A" : "");
+ break;
+ default:
+ printf("unknown");
+ break;
+ }
+
+ if (ni6->ni_qtype == NI_QTYPE_NOOP ||
+ ni6->ni_qtype == NI_QTYPE_SUPTYPES) {
+ if (siz != sizeof(*ni6))
+ if (vflag)
+ printf(", invalid len");
+ /*(*/
+ printf(")");
+ break;
+ }
+
+
+ /* XXX backward compat, icmp-name-lookup-03 */
+ if (siz == sizeof(*ni6)) {
+ printf(", 03 draft");
+ /*(*/
+ printf(")");
+ break;
+ }
+
+ switch (ni6->ni_code) {
+ case ICMP6_NI_SUBJ_IPV6:
+ if (!TTEST2(*dp,
+ sizeof(*ni6) + sizeof(struct in6_addr)))
+ break;
+ if (siz != sizeof(*ni6) + sizeof(struct in6_addr)) {
+ if (vflag)
+ printf(", invalid subject len");
+ break;
+ }
+ printf(", subject=%s",
+ getname6((const u_char *)(ni6 + 1)));
+ break;
+ case ICMP6_NI_SUBJ_FQDN:
+ printf(", subject=DNS name");
+ cp = (const u_char *)(ni6 + 1);
+ if (cp[0] == ep - cp - 1) {
+ /* icmp-name-lookup-03, pascal string */
+ if (vflag)
+ printf(", 03 draft");
+ cp++;
+ printf(", \"");
+ while (cp < ep) {
+ safeputchar(*cp);
+ cp++;
+ }
+ printf("\"");
+ } else
+ dnsname_print(cp, ep);
+ break;
+ case ICMP6_NI_SUBJ_IPV4:
+ if (!TTEST2(*dp, sizeof(*ni6) + sizeof(struct in_addr)))
+ break;
+ if (siz != sizeof(*ni6) + sizeof(struct in_addr)) {
+ if (vflag)
+ printf(", invalid subject len");
+ break;
+ }
+ printf(", subject=%s",
+ getname((const u_char *)(ni6 + 1)));
+ break;
+ default:
+ printf(", unknown subject");
+ break;
+ }
+
+ /*(*/
+ printf(")");
+ break;
+
+ case ICMP6_NI_REPLY:
+ if (icmp6len > siz) {
+ printf("[|icmp6: node information reply]");
+ break;
+ }
+
+ needcomma = 0;
+
+ ni6 = (struct icmp6_nodeinfo *)dp;
+ printf(" node information reply");
+ printf(" ("); /*)*/
+ switch (ni6->ni_code) {
+ case ICMP6_NI_SUCCESS:
+ if (vflag) {
+ printf("success");
+ needcomma++;
+ }
+ break;
+ case ICMP6_NI_REFUSED:
+ printf("refused");
+ needcomma++;
+ if (siz != sizeof(*ni6))
+ if (vflag)
+ printf(", invalid length");
+ break;
+ case ICMP6_NI_UNKNOWN:
+ printf("unknown");
+ needcomma++;
+ if (siz != sizeof(*ni6))
+ if (vflag)
+ printf(", invalid length");
+ break;
+ }
+
+ if (ni6->ni_code != ICMP6_NI_SUCCESS) {
+ /*(*/
+ printf(")");
+ break;
+ }
+
+ switch (EXTRACT_16BITS(&ni6->ni_qtype)) {
+ case NI_QTYPE_NOOP:
+ if (needcomma)
+ printf(", ");
+ printf("noop");
+ if (siz != sizeof(*ni6))
+ if (vflag)
+ printf(", invalid length");
+ break;
+ case NI_QTYPE_SUPTYPES:
+ if (needcomma)
+ printf(", ");
+ printf("supported qtypes");
+ i = EXTRACT_16BITS(&ni6->ni_flags);
+ if (i)
+ printf(" [%s]", (i & 0x01) ? "C" : "");
+ break;
+ case NI_QTYPE_FQDN:
+ if (needcomma)
+ printf(", ");
+ printf("DNS name");
+ cp = (const u_char *)(ni6 + 1) + 4;
+ if (cp[0] == ep - cp - 1) {
+ /* icmp-name-lookup-03, pascal string */
+ if (vflag)
+ printf(", 03 draft");
+ cp++;
+ printf(", \"");
+ while (cp < ep) {
+ safeputchar(*cp);
+ cp++;
+ }
+ printf("\"");
+ } else
+ dnsname_print(cp, ep);
+ if ((EXTRACT_16BITS(&ni6->ni_flags) & 0x01) != 0)
+ printf(" [TTL=%u]", *(u_int32_t *)(ni6 + 1));
+ break;
+ case NI_QTYPE_NODEADDR:
+ if (needcomma)
+ printf(", ");
+ printf("node addresses");
+ i = sizeof(*ni6);
+ while (i < siz) {
+ if (i + sizeof(struct in6_addr) + sizeof(int32_t) > siz)
+ break;
+ printf(" %s", getname6(bp + i));
+ i += sizeof(struct in6_addr);
+ printf("(%d)", (int32_t)EXTRACT_32BITS(bp + i));
+ i += sizeof(int32_t);
+ }
+ i = ni6->ni_flags;
+ if (!i)
+ break;
+ printf(" [%s%s%s%s%s%s%s]",
+ (i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
+ (i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
+ (i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
+ (i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
+ (i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
+ (i & NI_NODEADDR_FLAG_ALL) ? "A" : "",
+ (i & NI_NODEADDR_FLAG_TRUNCATE) ? "T" : "");
+ break;
+ default:
+ if (needcomma)
+ printf(", ");
+ printf("unknown");
+ break;
+ }
+
+ /*(*/
+ printf(")");
+ break;
+ }
+ return;
+
+trunc:
+ fputs("[|icmp6]", stdout);
+}
+
+static void
+icmp6_rrenum_print(const u_char *bp, const u_char *ep)
+{
+ struct icmp6_router_renum *rr6;
+ const char *cp;
+ struct rr_pco_match *match;
+ struct rr_pco_use *use;
+ char hbuf[NI_MAXHOST];
+ int n;
+
+ if (ep < bp)
+ return;
+ rr6 = (struct icmp6_router_renum *)bp;
+ cp = (const char *)(rr6 + 1);
+
+ TCHECK(rr6->rr_reserved);
+ switch (rr6->rr_code) {
+ case ICMP6_ROUTER_RENUMBERING_COMMAND:
+ printf("router renum: command");
+ break;
+ case ICMP6_ROUTER_RENUMBERING_RESULT:
+ printf("router renum: result");
+ break;
+ case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET:
+ printf("router renum: sequence number reset");
+ break;
+ default:
+ printf("router renum: code-#%d", rr6->rr_code);
+ break;
+ }
+
+ printf(", seq=%u", EXTRACT_32BITS(&rr6->rr_seqnum));
+
+ if (vflag) {
+#define F(x, y) ((rr6->rr_flags) & (x) ? (y) : "")
+ printf("["); /*]*/
+ if (rr6->rr_flags) {
+ printf("%s%s%s%s%s,", F(ICMP6_RR_FLAGS_TEST, "T"),
+ F(ICMP6_RR_FLAGS_REQRESULT, "R"),
+ F(ICMP6_RR_FLAGS_FORCEAPPLY, "A"),
+ F(ICMP6_RR_FLAGS_SPECSITE, "S"),
+ F(ICMP6_RR_FLAGS_PREVDONE, "P"));
+ }
+ printf("seg=%u,", rr6->rr_segnum);
+ printf("maxdelay=%u", rr6->rr_maxdelay);
+ if (rr6->rr_reserved)
+ printf("rsvd=0x%x", EXTRACT_16BITS(&rr6->rr_reserved));
+ /*[*/
+ printf("]");
+#undef F
+ }
+
+ if (rr6->rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND) {
+ match = (struct rr_pco_match *)cp;
+ cp = (const char *)(match + 1);
+
+ TCHECK(match->rpm_prefix);
+
+ if (vflag > 1)
+ printf("\n\t");
+ else
+ printf(" ");
+ printf("match("); /*)*/
+ switch (match->rpm_code) {
+ case RPM_PCO_ADD: printf("add"); break;
+ case RPM_PCO_CHANGE: printf("change"); break;
+ case RPM_PCO_SETGLOBAL: printf("setglobal"); break;
+ default: printf("#%u", match->rpm_code); break;
+ }
+
+ if (vflag) {
+ printf(",ord=%u", match->rpm_ordinal);
+ printf(",min=%u", match->rpm_minlen);
+ printf(",max=%u", match->rpm_maxlen);
+ }
+ if (inet_ntop(AF_INET6, &match->rpm_prefix, hbuf, sizeof(hbuf)))
+ printf(",%s/%u", hbuf, match->rpm_matchlen);
+ else
+ printf(",?/%u", match->rpm_matchlen);
+ /*(*/
+ printf(")");
+
+ n = match->rpm_len - 3;
+ if (n % 4)
+ goto trunc;
+ n /= 4;
+ while (n-- > 0) {
+ use = (struct rr_pco_use *)cp;
+ cp = (const char *)(use + 1);
+
+ TCHECK(use->rpu_prefix);
+
+ if (vflag > 1)
+ printf("\n\t");
+ else
+ printf(" ");
+ printf("use("); /*)*/
+ if (use->rpu_flags) {
+#define F(x, y) ((use->rpu_flags) & (x) ? (y) : "")
+ printf("%s%s,",
+ F(ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME, "V"),
+ F(ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME, "P"));
+#undef F
+ }
+ if (vflag) {
+ printf("mask=0x%x,", use->rpu_ramask);
+ printf("raflags=0x%x,", use->rpu_raflags);
+ if (~use->rpu_vltime == 0)
+ printf("vltime=infty,");
+ else
+ printf("vltime=%u,",
+ EXTRACT_32BITS(&use->rpu_vltime));
+ if (~use->rpu_pltime == 0)
+ printf("pltime=infty,");
+ else
+ printf("pltime=%u,",
+ EXTRACT_32BITS(&use->rpu_pltime));
+ }
+ if (inet_ntop(AF_INET6, &use->rpu_prefix, hbuf,
+ sizeof(hbuf)))
+ printf("%s/%u/%u", hbuf, use->rpu_uselen,
+ use->rpu_keeplen);
+ else
+ printf("?/%u/%u", use->rpu_uselen,
+ use->rpu_keeplen);
+ /*(*/
+ printf(")");
+ }
+ }
+
+ return;
+
+trunc:
+ fputs("[|icmp6]", stdout);
+}
+
+#endif /* INET6 */