auto import from //depot/cupcake/@135843
diff --git a/print-igmp.c b/print-igmp.c
new file mode 100644
index 0000000..c310d55
--- /dev/null
+++ b/print-igmp.c
@@ -0,0 +1,336 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994, 1995, 1996
+ * 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-igmp.c,v 1.15 2004/03/24 00:59:16 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h" /* must come after interface.h */
+
+#ifndef IN_CLASSD
+#define IN_CLASSD(i) (((int32_t)(i) & 0xf0000000) == 0xe0000000)
+#endif
+
+/* (following from ipmulti/mrouted/prune.h) */
+
+/*
+ * The packet format for a traceroute request.
+ */
+struct tr_query {
+ u_int32_t tr_src; /* traceroute source */
+ u_int32_t tr_dst; /* traceroute destination */
+ u_int32_t tr_raddr; /* traceroute response address */
+ u_int32_t tr_rttlqid; /* response ttl and qid */
+};
+
+#define TR_GETTTL(x) (int)(((x) >> 24) & 0xff)
+#define TR_GETQID(x) ((x) & 0x00ffffff)
+
+/*
+ * Traceroute response format. A traceroute response has a tr_query at the
+ * beginning, followed by one tr_resp for each hop taken.
+ */
+struct tr_resp {
+ u_int32_t tr_qarr; /* query arrival time */
+ u_int32_t tr_inaddr; /* incoming interface address */
+ u_int32_t tr_outaddr; /* outgoing interface address */
+ u_int32_t tr_rmtaddr; /* parent address in source tree */
+ u_int32_t tr_vifin; /* input packet count on interface */
+ u_int32_t tr_vifout; /* output packet count on interface */
+ u_int32_t tr_pktcnt; /* total incoming packets for src-grp */
+ u_int8_t tr_rproto; /* routing proto deployed on router */
+ u_int8_t tr_fttl; /* ttl required to forward on outvif */
+ u_int8_t tr_smask; /* subnet mask for src addr */
+ u_int8_t tr_rflags; /* forwarding error codes */
+};
+
+/* defs within mtrace */
+#define TR_QUERY 1
+#define TR_RESP 2
+
+/* fields for tr_rflags (forwarding error codes) */
+#define TR_NO_ERR 0
+#define TR_WRONG_IF 1
+#define TR_PRUNED 2
+#define TR_OPRUNED 3
+#define TR_SCOPED 4
+#define TR_NO_RTE 5
+#define TR_NO_FWD 7
+#define TR_NO_SPACE 0x81
+#define TR_OLD_ROUTER 0x82
+
+/* fields for tr_rproto (routing protocol) */
+#define TR_PROTO_DVMRP 1
+#define TR_PROTO_MOSPF 2
+#define TR_PROTO_PIM 3
+#define TR_PROTO_CBT 4
+
+/* igmpv3 report types */
+static struct tok igmpv3report2str[] = {
+ { 1, "is_in" },
+ { 2, "is_ex" },
+ { 3, "to_in" },
+ { 4, "to_ex" },
+ { 5, "allow" },
+ { 6, "block" },
+ { 0, NULL }
+};
+
+static void
+print_mtrace(register const u_char *bp, register u_int len)
+{
+ register const struct tr_query *tr = (const struct tr_query *)(bp + 8);
+
+ TCHECK(*tr);
+ if (len < 8 + sizeof (struct tr_query)) {
+ (void)printf(" [invalid len %d]", len);
+ return;
+ }
+ printf("mtrace %u: %s to %s reply-to %s",
+ TR_GETQID(EXTRACT_32BITS(&tr->tr_rttlqid)),
+ ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst),
+ ipaddr_string(&tr->tr_raddr));
+ if (IN_CLASSD(EXTRACT_32BITS(&tr->tr_raddr)))
+ printf(" with-ttl %d", TR_GETTTL(EXTRACT_32BITS(&tr->tr_rttlqid)));
+ return;
+trunc:
+ (void)printf("[|igmp]");
+ return;
+}
+
+static void
+print_mresp(register const u_char *bp, register u_int len)
+{
+ register const struct tr_query *tr = (const struct tr_query *)(bp + 8);
+
+ TCHECK(*tr);
+ if (len < 8 + sizeof (struct tr_query)) {
+ (void)printf(" [invalid len %d]", len);
+ return;
+ }
+ printf("mresp %lu: %s to %s reply-to %s",
+ (u_long)TR_GETQID(EXTRACT_32BITS(&tr->tr_rttlqid)),
+ ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst),
+ ipaddr_string(&tr->tr_raddr));
+ if (IN_CLASSD(EXTRACT_32BITS(&tr->tr_raddr)))
+ printf(" with-ttl %d", TR_GETTTL(EXTRACT_32BITS(&tr->tr_rttlqid)));
+ return;
+trunc:
+ (void)printf("[|igmp]");
+ return;
+}
+
+static void
+print_igmpv3_report(register const u_char *bp, register u_int len)
+{
+ u_int group, nsrcs, ngroups;
+ register u_int i, j;
+
+ /* Minimum len is 16, and should be a multiple of 4 */
+ if (len < 16 || len & 0x03) {
+ (void)printf(" [invalid len %d]", len);
+ return;
+ }
+ TCHECK2(bp[6], 2);
+ ngroups = EXTRACT_16BITS(&bp[6]);
+ (void)printf(", %d group record(s)", ngroups);
+ if (vflag > 0) {
+ /* Print the group records */
+ group = 8;
+ for (i=0; i<ngroups; i++) {
+ if (len < group+8) {
+ (void)printf(" [invalid number of groups]");
+ return;
+ }
+ TCHECK2(bp[group+4], 4);
+ (void)printf(" [gaddr %s", ipaddr_string(&bp[group+4]));
+ (void)printf(" %s", tok2str(igmpv3report2str, " [v3-report-#%d]",
+ bp[group]));
+ nsrcs = EXTRACT_16BITS(&bp[group+2]);
+ /* Check the number of sources and print them */
+ if (len < group+8+(nsrcs<<2)) {
+ (void)printf(" [invalid number of sources %d]", nsrcs);
+ return;
+ }
+ if (vflag == 1)
+ (void)printf(", %d source(s)", nsrcs);
+ else {
+ /* Print the sources */
+ (void)printf(" {");
+ for (j=0; j<nsrcs; j++) {
+ TCHECK2(bp[group+8+(j<<2)], 4);
+ (void)printf(" %s", ipaddr_string(&bp[group+8+(j<<2)]));
+ }
+ (void)printf(" }");
+ }
+ /* Next group record */
+ group += 8 + (nsrcs << 2);
+ (void)printf("]");
+ }
+ }
+ return;
+trunc:
+ (void)printf("[|igmp]");
+ return;
+}
+
+static void
+print_igmpv3_query(register const u_char *bp, register u_int len)
+{
+ u_int mrc;
+ int mrt;
+ u_int nsrcs;
+ register u_int i;
+
+ (void)printf(" v3");
+ /* Minimum len is 12, and should be a multiple of 4 */
+ if (len < 12 || len & 0x03) {
+ (void)printf(" [invalid len %d]", len);
+ return;
+ }
+ TCHECK(bp[1]);
+ mrc = bp[1];
+ if (mrc < 128) {
+ mrt = mrc;
+ } else {
+ mrt = ((mrc & 0x0f) | 0x10) << (((mrc & 0x70) >> 4) + 3);
+ }
+ if (mrc != 100) {
+ (void)printf(" [max resp time ");
+ relts_print(mrt);
+ (void)printf("]");
+ }
+ TCHECK2(bp[4], 4);
+ if (EXTRACT_32BITS(&bp[4]) == 0)
+ return;
+ (void)printf(" [gaddr %s", ipaddr_string(&bp[4]));
+ TCHECK2(bp[10], 2);
+ nsrcs = EXTRACT_16BITS(&bp[10]);
+ if (nsrcs > 0) {
+ if (len < 12 + (nsrcs << 2))
+ (void)printf(" [invalid number of sources]");
+ else if (vflag > 1) {
+ (void)printf(" {");
+ for (i=0; i<nsrcs; i++) {
+ TCHECK2(bp[12+(i<<2)], 4);
+ (void)printf(" %s", ipaddr_string(&bp[12+(i<<2)]));
+ }
+ (void)printf(" }");
+ } else
+ (void)printf(", %d source(s)", nsrcs);
+ }
+ (void)printf("]");
+ return;
+trunc:
+ (void)printf("[|igmp]");
+ return;
+}
+
+void
+igmp_print(register const u_char *bp, register u_int len)
+{
+ if (qflag) {
+ (void)printf("igmp");
+ return;
+ }
+
+ TCHECK(bp[0]);
+ switch (bp[0]) {
+ case 0x11:
+ (void)printf("igmp query");
+ if (len >= 12)
+ print_igmpv3_query(bp, len);
+ else {
+ TCHECK(bp[1]);
+ if (bp[1]) {
+ (void)printf(" v2");
+ if (bp[1] != 100)
+ (void)printf(" [max resp time %d]", bp[1]);
+ } else
+ (void)printf(" v1");
+ TCHECK2(bp[4], 4);
+ if (EXTRACT_32BITS(&bp[4]))
+ (void)printf(" [gaddr %s]", ipaddr_string(&bp[4]));
+ if (len != 8)
+ (void)printf(" [len %d]", len);
+ }
+ break;
+ case 0x12:
+ TCHECK2(bp[4], 4);
+ (void)printf("igmp v1 report %s", ipaddr_string(&bp[4]));
+ if (len != 8)
+ (void)printf(" [len %d]", len);
+ break;
+ case 0x16:
+ TCHECK2(bp[4], 4);
+ (void)printf("igmp v2 report %s", ipaddr_string(&bp[4]));
+ break;
+ case 0x22:
+ (void)printf("igmp v3 report");
+ print_igmpv3_report(bp, len);
+ break;
+ case 0x17:
+ TCHECK2(bp[4], 4);
+ (void)printf("igmp leave %s", ipaddr_string(&bp[4]));
+ break;
+ case 0x13:
+ (void)printf("igmp dvmrp");
+ if (len < 8)
+ (void)printf(" [len %d]", len);
+ else
+ dvmrp_print(bp, len);
+ break;
+ case 0x14:
+ (void)printf("igmp pimv1");
+ pimv1_print(bp, len);
+ break;
+ case 0x1e:
+ print_mresp(bp, len);
+ break;
+ case 0x1f:
+ print_mtrace(bp, len);
+ break;
+ default:
+ (void)printf("igmp-%d", bp[0]);
+ break;
+ }
+
+ if (vflag && TTEST2(bp[0], len)) {
+ /* Check the IGMP checksum */
+ if (in_cksum((const u_short*)bp, len, 0))
+ printf(" bad igmp cksum %x!", EXTRACT_16BITS(&bp[2]));
+ }
+ return;
+trunc:
+ fputs("[|igmp]", stdout);
+}