+
+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);
+ }
+ 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);
+ }
+
+ nsrcs = ntohs(*(u_short *)&bp[26]);
+ if (nsrcs > 0) {
+ if (len < 28 + nsrcs * 16)
+ printf(" [invalid number of sources]");
+ else if (vflag > 1) {
+ printf(" {");
+ for (i = 0; i < nsrcs; i++) {
+ TCHECK2(bp[28 + i * 16], 16);
+ printf(" %s", ip6addr_string(&bp[28 + i * 16]));
+ }
+ 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("icmp6: who-are-you request");
+ break;
+ }
+ printf("icmp6: 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("icmp6: 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;
+ struct icmp6_hdr *dp;
+ size_t siz;
+ const char *cp;
+ struct rr_pco_match *match;
+ struct rr_pco_use *use;
+ char hbuf[NI_MAXHOST];
+ int n;
+
+ if (ep < bp)
+ return;
+ dp = (struct icmp6_hdr *)bp;
+ rr6 = (struct icmp6_router_renum *)bp;
+ siz = ep - 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);
+}
+
projects / tcpdump / blobdiff