X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/f555c163f90c9de17ebcef8313f86404c5174ca9..c23f7b7dcf9c014cf531d75c22cc254c7ca35e55:/print-pim.c

diff --git a/print-pim.c b/print-pim.c
index 2714c09e..39128eba 100644
--- a/print-pim.c
+++ b/print-pim.c
@@ -21,7 +21,11 @@
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.7 1999-10-07 23:47:12 mcr Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.29 2001-07-04 21:36:15 fenner Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
 #endif
 
 #include <sys/param.h>
@@ -29,13 +33,26 @@ static const char rcsid[] =
 #include <sys/socket.h>
 
 #include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/ip_var.h>
-#include <netinet/udp.h>
-#include <netinet/udp_var.h>
-#include <netinet/tcp.h>
-#include <netinet/tcpip.h>
+
+/*
+ * XXX: We consider a case where IPv6 is not ready yet for portability,
+ * but PIM dependent defintions should be independent of IPv6...
+ */
+
+struct pim {
+	u_int8_t pim_typever;
+			/* upper 4bit: PIM version number; 2 for PIMv2 */
+			/* lower 4bit: the PIM message type, currently they are:
+			 * Hello, Register, Register-Stop, Join/Prune,
+			 * Bootstrap, Assert, Graft (PIM-DM only),
+			 * Graft-Ack (PIM-DM only), C-RP-Adv
+			 */
+#define PIM_VER(x)	(((x) & 0xf0) >> 4)
+#define PIM_TYPE(x)	((x) & 0x0f)
+	u_char  pim_rsv;	/* Reserved */
+	u_short	pim_cksum;	/* IP style check sum */
+};
+
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -43,58 +60,885 @@ static const char rcsid[] =
 
 #include "interface.h"
 #include "addrtoname.h"
+#include "extract.h"
+
+#include "ip.h"
+
+static void pimv2_print(register const u_char *bp, register u_int len);
+
+static void
+pimv1_join_prune_print(register const u_char *bp, register u_int len)
+{
+	int maddrlen, addrlen, ngroups, njoin, nprune;
+	int njp;
+
+	/* If it's a single group and a single source, use 1-line output. */
+	if (TTEST2(bp[0], 30) && bp[11] == 1 &&
+	    ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) {
+		int hold;
+
+		(void)printf(" RPF %s ", ipaddr_string(bp));
+		hold = EXTRACT_16BITS(&bp[6]);
+		if (hold != 180) {
+			(void)printf("Hold ");
+			relts_print(hold);
+		}
+		(void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune",
+		ipaddr_string(&bp[26]), bp[25] & 0x3f,
+		ipaddr_string(&bp[12]));
+		if (EXTRACT_32BITS(&bp[16]) != 0xffffffff)
+			(void)printf("/%s", ipaddr_string(&bp[16]));
+		(void)printf(") %s%s %s",
+		    (bp[24] & 0x01) ? "Sparse" : "Dense",
+		    (bp[25] & 0x80) ? " WC" : "",
+		    (bp[25] & 0x40) ? "RP" : "SPT");
+		return;
+	}
+
+	TCHECK2(bp[0], 4);
+	if (vflag > 1)
+		(void)printf("\n");
+	(void)printf(" Upstream Nbr: %s", ipaddr_string(bp));
+	TCHECK2(bp[6], 2);
+	if (vflag > 1)
+		(void)printf("\n");
+	(void)printf(" Hold time: ");
+	relts_print(EXTRACT_16BITS(&bp[6]));
+	if (vflag < 2)
+		return;
+	bp += 8;
+	len -= 8;
+
+	TCHECK2(bp[0], 4);
+	maddrlen = bp[1];
+	addrlen = bp[2];
+	ngroups = bp[3];
+	bp += 4;
+	len -= 4;
+	while (ngroups--) {
+		TCHECK2(bp[0], 4);
+		(void)printf("\n\tGroup: %s", ipaddr_string(bp));
+		if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
+			(void)printf("/%s", ipaddr_string(&bp[4]));
+		TCHECK2(bp[8], 4);
+		njoin = EXTRACT_16BITS(&bp[8]);
+		nprune = EXTRACT_16BITS(&bp[10]);
+		(void)printf(" joined: %d pruned: %d", njoin, nprune);
+		bp += 12;
+		len -= 12;
+		for (njp = 0; njp < (njoin + nprune); njp++) {
+			char *type;
+
+			if (njp < njoin)
+				type = "Join ";
+			else
+				type = "Prune";
+			TCHECK2(bp[0], 6);
+			(void)printf("\n\t%s %s%s%s%s/%d", type,
+			    (bp[0] & 0x01) ? "Sparse " : "Dense ",
+			    (bp[1] & 0x80) ? "WC " : "",
+			    (bp[1] & 0x40) ? "RP " : "SPT ",
+			ipaddr_string(&bp[2]), bp[1] & 0x3f);
+			bp += 6;
+			len -= 6;
+		}
+	}
+	return;
+trunc:
+	(void)printf("[|pim]");
+	return;
+}
+
+void
+pimv1_print(register const u_char *bp, register u_int len)
+{
+	register const u_char *ep;
+	register u_char type;
+
+	ep = (const u_char *)snapend;
+	if (bp >= ep)
+		return;
+
+	type = bp[1];
+
+	switch (type) {
+	case 0:
+		(void)printf(" Query");
+		if (TTEST(bp[8])) {
+			switch (bp[8] >> 4) {
+			case 0:
+				(void)printf(" Dense-mode");
+				break;
+			case 1:
+				(void)printf(" Sparse-mode");
+				break;
+			case 2:
+				(void)printf(" Sparse-Dense-mode");
+				break;
+			default:
+				(void)printf(" mode-%d", bp[8] >> 4);
+				break;
+			}
+		}
+		if (vflag) {
+			TCHECK2(bp[10],2);
+			(void)printf(" (Hold-time ");
+			relts_print(EXTRACT_16BITS(&bp[10]));
+			(void)printf(")");
+		}
+		break;
+
+	case 1:
+		(void)printf(" Register");
+		TCHECK2(bp[8], 20);			/* ip header */
+		(void)printf(" for %s > %s", ipaddr_string(&bp[20]),
+		    ipaddr_string(&bp[24]));
+		break;
+	case 2:
+		(void)printf(" Register-Stop");
+		TCHECK2(bp[12], 4);
+		(void)printf(" for %s > %s", ipaddr_string(&bp[8]),
+		    ipaddr_string(&bp[12]));
+		break;
+	case 3:
+		(void)printf(" Join/Prune");
+		if (vflag)
+			pimv1_join_prune_print(&bp[8], len - 8);
+		break;
+	case 4:
+		(void)printf(" RP-reachable");
+		if (vflag) {
+			TCHECK2(bp[22], 2);
+			(void)printf(" group %s",
+			ipaddr_string(&bp[8]));
+			if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
+				(void)printf("/%s", ipaddr_string(&bp[12]));
+			(void)printf(" RP %s hold ", ipaddr_string(&bp[16]));
+			relts_print(EXTRACT_16BITS(&bp[22]));
+		}
+		break;
+	case 5:
+		(void)printf(" Assert");
+		TCHECK2(bp[16], 4);
+		(void)printf(" for %s > %s", ipaddr_string(&bp[16]),
+		    ipaddr_string(&bp[8]));
+		if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
+			(void)printf("/%s", ipaddr_string(&bp[12]));
+		TCHECK2(bp[24], 4);
+		(void)printf(" %s pref %d metric %d",
+		    (bp[20] & 0x80) ? "RP-tree" : "SPT",
+		EXTRACT_32BITS(&bp[20]) & 0x7fffffff,
+		EXTRACT_32BITS(&bp[24]));
+		break;
+	case 6:
+		(void)printf(" Graft");
+		if (vflag)
+			pimv1_join_prune_print(&bp[8], len - 8);
+		break;
+	case 7:
+		(void)printf(" Graft-ACK");
+		if (vflag)
+			pimv1_join_prune_print(&bp[8], len - 8);
+		break;
+	case 8:
+		(void)printf(" Mode");
+		break;
+	default:
+		(void)printf(" [type %d]", type);
+		break;
+	}
+	if ((bp[4] >> 4) != 1)
+		(void)printf(" [v%d]", bp[4] >> 4);
+	return;
+
+trunc:
+	(void)printf("[|pim]");
+	return;
+}
+
+/*
+ * auto-RP is a cisco protocol, documented at
+ * ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt
+ *
+ * This implements version 1+, dated Sept 9, 1998.
+ */
+void
+cisco_autorp_print(register const u_char *bp, register u_int len)
+{
+	int type;
+	int numrps;
+	int hold;
+
+	TCHECK(bp[0]);
+	(void)printf(" auto-rp ");
+	type = bp[0];
+	switch (type) {
+	case 0x11:
+		(void)printf("candidate-advert");
+		break;
+	case 0x12:
+		(void)printf("mapping");
+		break;
+	default:
+		(void)printf("type-0x%02x", type);
+		break;
+	}
+
+	TCHECK(bp[1]);
+	numrps = bp[1];
+
+	TCHECK2(bp[2], 2);
+	(void)printf(" Hold ");
+	hold = EXTRACT_16BITS(&bp[2]);
+	if (hold)
+		relts_print(EXTRACT_16BITS(&bp[2]));
+	else
+		printf("FOREVER");
+
+	/* Next 4 bytes are reserved. */
+
+	bp += 8; len -= 8;
+
+	/*XXX skip unless -v? */
+
+	/*
+	 * Rest of packet:
+	 * numrps entries of the form:
+	 * 32 bits: RP
+	 * 6 bits: reserved
+	 * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2".
+	 * 8 bits: # of entries for this RP
+	 * each entry: 7 bits: reserved, 1 bit: negative,
+	 *	       8 bits: mask 32 bits: source
+	 * lather, rinse, repeat.
+	 */
+	while (numrps--) {
+		int nentries;
+		char s;
+
+		TCHECK2(bp[0], 4);
+		(void)printf(" RP %s", ipaddr_string(bp));
+		TCHECK(bp[4]);
+		switch (bp[4] & 0x3) {
+		case 0: printf(" PIMv?");
+			break;
+		case 1:	printf(" PIMv1");
+			break;
+		case 2:	printf(" PIMv2");
+			break;
+		case 3:	printf(" PIMv1+2");
+			break;
+		}
+		if (bp[4] & 0xfc)
+			(void)printf(" [rsvd=0x%02x]", bp[4] & 0xfc);
+		TCHECK(bp[5]);
+		nentries = bp[5];
+		bp += 6; len -= 6;
+		s = ' ';
+		for (; nentries; nentries--) {
+			TCHECK2(bp[0], 6);
+			(void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "",
+			    ipaddr_string(&bp[2]), bp[1]);
+			if (bp[0] & 0xfe)
+				(void)printf("[rsvd=0x%02x]", bp[0] & 0xfe);
+			s = ',';
+			bp += 6; len -= 6;
+		}
+	}
+	return;
+
+trunc:
+	(void)printf("[|autorp]");
+	return;
+}
 
 void
 pim_print(register const u_char *bp, register u_int len)
 {
-    register const u_char *ep;
-    register u_char type;
+	register const u_char *ep;
+	register struct pim *pim = (struct pim *)bp;
 
-    ep = (const u_char *)snapend;
-    if (bp >= ep)
+	ep = (const u_char *)snapend;
+	if (bp >= ep)
+		return;
+#ifdef notyet			/* currently we see only version and type */
+	TCHECK(pim->pim_rsv);
+#endif
+
+	switch (PIM_VER(pim->pim_typever)) {
+	case 2:		/* avoid hardcoding? */
+		(void)printf("pim v2");
+		pimv2_print(bp, len);
+		break;
+	default:
+		(void)printf("pim v%d", PIM_VER(pim->pim_typever));
+		break;
+	}
 	return;
+}
+
+/*
+ * PIMv2 uses encoded address representations.
+ *
+ * The last PIM-SM I-D before RFC2117 was published specified the
+ * following representation for unicast addresses.  However, RFC2117
+ * specified no encoding for unicast addresses with the unicast
+ * address length specified in the header.  Therefore, we have to
+ * guess which encoding is being used (Cisco's PIMv2 implementation
+ * uses the non-RFC encoding).  RFC2117 turns a previously "Reserved"
+ * field into a 'unicast-address-length-in-bytes' field.  We guess
+ * that it's the draft encoding if this reserved field is zero.
+ *
+ * RFC2362 goes back to the encoded format, and calls the addr length
+ * field "reserved" again.
+ *
+ * The first byte is the address family, from:
+ *
+ *    0    Reserved
+ *    1    IP (IP version 4)
+ *    2    IP6 (IP version 6)
+ *    3    NSAP
+ *    4    HDLC (8-bit multidrop)
+ *    5    BBN 1822
+ *    6    802 (includes all 802 media plus Ethernet "canonical format")
+ *    7    E.163
+ *    8    E.164 (SMDS, Frame Relay, ATM)
+ *    9    F.69 (Telex)
+ *   10    X.121 (X.25, Frame Relay)
+ *   11    IPX
+ *   12    Appletalk
+ *   13    Decnet IV
+ *   14    Banyan Vines
+ *   15    E.164 with NSAP format subaddress
+ *
+ * In addition, the second byte is an "Encoding".  0 is the default
+ * encoding for the address family, and no other encodings are currently
+ * specified.
+ *
+ */
+
+static int pimv2_addr_len;
+
+enum pimv2_addrtype {
+	pimv2_unicast, pimv2_group, pimv2_source
+};
+
+/*  0                   1                   2                   3
+ *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Addr Family   | Encoding Type |     Unicast Address           |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+++++++
+ *  0                   1                   2                   3
+ *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Addr Family   | Encoding Type |   Reserved    |  Mask Len     |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                Group multicast Address                        |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  0                   1                   2                   3
+ *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Addr Family   | Encoding Type | Rsrvd   |S|W|R|  Mask Len     |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                        Source Address                         |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+static int
+pimv2_addr_print(const u_char *bp, enum pimv2_addrtype at, int silent)
+{
+	int af;
+	char *afstr;
+	int len, hdrlen;
+
+	TCHECK(bp[0]);
+
+	if (pimv2_addr_len == 0) {
+		TCHECK(bp[1]);
+		switch (bp[0]) {
+		case 1:
+			af = AF_INET;
+			afstr = "IPv4";
+			len = 4;
+			break;
+#ifdef INET6
+		case 2:
+			af = AF_INET6;
+			afstr = "IPv6";
+			len = 16;
+			break;
+#endif
+		default:
+			return -1;
+		}
+		if (bp[1] != 0)
+			return -1;
+		hdrlen = 2;
+	} else {
+		switch (pimv2_addr_len) {
+		case 4:
+			af = AF_INET;
+			afstr = "IPv4";
+			break;
+#ifdef INET6
+		case 16:
+			af = AF_INET6;
+			afstr = "IPv6";
+			break;
+#endif
+		default:
+			return -1;
+			break;
+		}
+		len = pimv2_addr_len;
+		hdrlen = 0;
+	}
+
+	bp += hdrlen;
+	switch (at) {
+	case pimv2_unicast:
+		TCHECK2(bp[0], len);
+		if (af == AF_INET) {
+			if (!silent)
+				(void)printf("%s", ipaddr_string(bp));
+		}
+#ifdef INET6
+		else if (af == AF_INET6) {
+			if (!silent)
+				(void)printf("%s", ip6addr_string(bp));
+		}
+#endif
+		return hdrlen + len;
+	case pimv2_group:
+	case pimv2_source:
+		TCHECK2(bp[0], len + 2);
+		if (af == AF_INET) {
+			if (!silent) {
+				(void)printf("%s", ipaddr_string(bp + 2));
+				if (bp[1] != 32)
+					(void)printf("/%u", bp[1]);
+			}
+		}
+#ifdef INET6
+		else if (af == AF_INET6) {
+			if (!silent) {
+				(void)printf("%s", ip6addr_string(bp + 2));
+				if (bp[1] != 128)
+					(void)printf("/%u", bp[1]);
+			}
+		}
+#endif
+		if (bp[0] && !silent) {
+			if (at == pimv2_group) {
+				(void)printf("(0x%02x)", bp[0]);
+			} else {
+				(void)printf("(%s%s%s",
+					bp[0] & 0x04 ? "S" : "",
+					bp[0] & 0x02 ? "W" : "",
+					bp[0] & 0x01 ? "R" : "");
+				if (bp[0] & 0xf8) {
+					(void) printf("+0x%02x", bp[0] & 0xf8);
+				}
+				(void)printf(")");
+			}
+		}
+		return hdrlen + 2 + len;
+	default:
+		return -1;
+	}
+trunc:
+	return -1;
+}
 
-    type = bp[1];
+static void
+pimv2_print(register const u_char *bp, register u_int len)
+{
+	register const u_char *ep;
+	register struct pim *pim = (struct pim *)bp;
+	int advance;
+
+	ep = (const u_char *)snapend;
+	if (bp >= ep)
+		return;
+	if (ep > bp + len)
+		ep = bp + len;
+	TCHECK(pim->pim_rsv);
+	pimv2_addr_len = pim->pim_rsv;
+	if (pimv2_addr_len != 0)
+		(void)printf("[RFC2117-encoding] ");
+
+	switch (PIM_TYPE(pim->pim_typever)) {
+	case 0:
+	    {
+		u_int16_t otype, olen;
+		(void)printf(" Hello");
+		bp += 4;
+		while (bp < ep) {
+			TCHECK2(bp[0], 4);
+			otype = EXTRACT_16BITS(&bp[0]);
+			olen = EXTRACT_16BITS(&bp[2]);
+			TCHECK2(bp[0], 4 + olen);
+			switch (otype) {
+			case 1:		/* Hold time */
+				(void)printf(" (Hold-time ");
+				relts_print(EXTRACT_16BITS(&bp[4]));
+				(void)printf(")");
+				break;
+
+			case 19:	/* DR-Priority */
+				(void)printf(" (DR-Priority: ");
+				if (olen != 4) {
+					(void)printf("!olen=%d!)", olen);
+				} else {
+					(void)printf("%d)", EXTRACT_32BITS(&bp[4]));
+				}
+				break;
+
+			case 20:
+				(void)printf(" (Genid: 0x%08x)", EXTRACT_32BITS(&bp[4]));
+				break;
+
+			case 21:
+				(void)printf(" (State Refresh Capable; v%d", bp[4]);
+				if (bp[5] != 0) {
+					(void)printf(" interval ");
+					relts_print(bp[5]);
+				}
+				if (EXTRACT_16BITS(&bp[6]) != 0) {
+					(void)printf(" ?0x%04x?", EXTRACT_16BITS(&bp[6]));
+				}
+				(void)printf(")");
+				break;
+
+			case 22:	/* Bidir-Capable */
+				(void)printf(" (bidir-capable)");
+				break;
+
+			default:
+				if (vflag)
+					(void)printf(" [Hello option %d]", otype);
+			}
+			bp += 4 + olen;
+		}
+		break;
+	    }
+
+	case 1:
+	{
+		struct ip *ip;
+
+		(void)printf(" Register");
+		if (vflag && bp + 8 <= ep) {
+			(void)printf(" %s%s", bp[4] & 0x80 ? "B" : "",
+				bp[4] & 0x40 ? "N" : "");
+		}
+		bp += 8; len -= 8;
+
+		/* encapsulated multicast packet */
+		if (bp >= ep)
+			break;
+		ip = (struct ip *)bp;
+		switch (IP_V(ip)) {
+		case 4:	/* IPv4 */
+			printf(" ");
+			ip_print(bp, len);
+			break;
+#ifdef INET6
+		case 6:	/* IPv6 */
+			printf(" ");
+			ip6_print(bp, len);
+			break;
+#endif
+		default:
+			(void)printf(" IP ver %d", IP_V(ip));
+			break;
+		}
+		break;
+	}
 
-    switch (type) {
-    case 0:
-	(void)printf(" Query");
-	break;
+	case 2:
+		(void)printf(" Register-Stop");
+		bp += 4; len -= 4;
+		if (bp >= ep)
+			break;
+		(void)printf(" group=");
+		if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance; len -= advance;
+		if (bp >= ep)
+			break;
+		(void)printf(" source=");
+		if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance; len -= advance;
+		break;
 
-    case 1:
-	(void)printf(" Register");
-	break;
+	case 3:
+	case 6:
+	case 7:
+	    {
+		u_int8_t ngroup;
+		u_int16_t holdtime;
+		u_int16_t njoin;
+		u_int16_t nprune;
+		int i, j;
 
-    case 2:
-	(void)printf(" Register-Stop");
-	break;
+		switch (PIM_TYPE(pim->pim_typever)) {
+		case 3:
+			(void)printf(" Join/Prune");
+			break;
+		case 6:
+			(void)printf(" Graft");
+			break;
+		case 7:
+			(void)printf(" Graft-ACK");
+			break;
+		}
+		bp += 4; len -= 4;
+		if (PIM_TYPE(pim->pim_typever) != 7) {	/*not for Graft-ACK*/
+			if (bp >= ep)
+				break;
+			(void)printf(" upstream-neighbor=");
+			if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
+				(void)printf("...");
+				break;
+			}
+			bp += advance; len -= advance;
+		}
+		if (bp + 4 > ep)
+			break;
+		ngroup = bp[1];
+		holdtime = EXTRACT_16BITS(&bp[2]);
+		(void)printf(" groups=%u", ngroup);
+		if (PIM_TYPE(pim->pim_typever) != 7) {	/*not for Graft-ACK*/
+			(void)printf(" holdtime=");
+			if (holdtime == 0xffff)
+				(void)printf("infty");
+			else
+				relts_print(holdtime);
+		}
+		bp += 4; len -= 4;
+		for (i = 0; i < ngroup; i++) {
+			if (bp >= ep)
+				goto jp_done;
+			(void)printf(" (group%d: ", i);
+			if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
+				(void)printf("...)");
+				goto jp_done;
+			}
+			bp += advance; len -= advance;
+			if (bp + 4 > ep) {
+				(void)printf("...)");
+				goto jp_done;
+			}
+			njoin = EXTRACT_16BITS(&bp[0]);
+			nprune = EXTRACT_16BITS(&bp[2]);
+			(void)printf(" join=%u", njoin);
+			bp += 4; len -= 4;
+			for (j = 0; j < njoin; j++) {
+				(void)printf(" ");
+				if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
+					(void)printf("...)");
+					goto jp_done;
+				}
+				bp += advance; len -= advance;
+			}
+			(void)printf(" prune=%u", nprune);
+			for (j = 0; j < nprune; j++) {
+				(void)printf(" ");
+				if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
+					(void)printf("...)");
+					goto jp_done;
+				}
+				bp += advance; len -= advance;
+			}
+			(void)printf(")");
+		}
+	jp_done:
+		break;
+	    }
 
-    case 3:
-	(void)printf(" Join/Prune");
-	break;
+	case 4:
+	{
+		int i, j, frpcnt;
 
-    case 4:
-	(void)printf(" RP-reachable");
-	break;
+		(void)printf(" Bootstrap");
+		bp += 4;
 
-    case 5:
-	(void)printf(" Assert");
-	break;
+		/* Fragment Tag, Hash Mask len, and BSR-priority */
+		if (bp + sizeof(u_int16_t) >= ep) break;
+		(void)printf(" tag=%x", EXTRACT_16BITS(bp));
+		bp += sizeof(u_int16_t);
+		if (bp >= ep) break;
+		(void)printf(" hashmlen=%d", bp[0]);
+		if (bp + 1 >= ep) break;
+		(void)printf(" BSRprio=%d", bp[1]);
+		bp += 2;
 
-    case 6:
-	(void)printf(" Graft");
-	break;
+		/* Encoded-Unicast-BSR-Address */
+		if (bp >= ep) break;
+		(void)printf(" BSR=");
+		if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance;
 
-    case 7:
-	(void)printf(" Graft-ACK");
-	break;
+		for (i = 0; bp < ep; i++) {
+			/* Encoded-Group Address */
+			(void)printf(" (group%d: ", i);
+			if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
+			    < 0) {
+				(void)printf("...)");
+				goto bs_done;
+			}
+			bp += advance;
 
-    case 8:
-	(void)printf(" Mode");
-	break;
+			/* RP-Count, Frag RP-Cnt, and rsvd */
+			if (bp >= ep) {
+				(void)printf("...)");
+				goto bs_done;
+			}
+			(void)printf(" RPcnt=%d", bp[0]);
+			if (bp + 1 >= ep) {
+				(void)printf("...)");
+				goto bs_done;
+			}
+			(void)printf(" FRPcnt=%d", frpcnt = bp[1]);
+			bp += 4;
+
+			for (j = 0; j < frpcnt && bp < ep; j++) {
+				/* each RP info */
+				(void)printf(" RP%d=", j);
+				if ((advance = pimv2_addr_print(bp,
+								pimv2_unicast,
+								0)) < 0) {
+					(void)printf("...)");
+					goto bs_done;
+				}
+				bp += advance;
+
+				if (bp + 1 >= ep) {
+					(void)printf("...)");
+					goto bs_done;
+				}
+				(void)printf(",holdtime=");
+				relts_print(EXTRACT_16BITS(bp));
+				if (bp + 2 >= ep) {
+					(void)printf("...)");
+					goto bs_done;
+				}
+				(void)printf(",prio=%d", bp[2]);
+				bp += 4;
+			}
+			(void)printf(")");
+		}
+	   bs_done:
+		break;
+	}
+	case 5:
+		(void)printf(" Assert");
+		bp += 4; len -= 4;
+		if (bp >= ep)
+			break;
+		(void)printf(" group=");
+		if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance; len -= advance;
+		if (bp >= ep)
+			break;
+		(void)printf(" src=");
+		if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance; len -= advance;
+		if (bp + 8 > ep)
+			break;
+		if (bp[0] & 0x80)
+			(void)printf(" RPT");
+		(void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff);
+		(void)printf(" metric=%u", EXTRACT_32BITS(&bp[4]));
+		break;
+
+	case 8:
+	{
+		int i, pfxcnt;
+
+		(void)printf(" Candidate-RP-Advertisement");
+		bp += 4;
+
+		/* Prefix-Cnt, Priority, and Holdtime */
+		if (bp >= ep) break;
+		(void)printf(" prefix-cnt=%d", bp[0]);
+		pfxcnt = bp[0];
+		if (bp + 1 >= ep) break;
+		(void)printf(" prio=%d", bp[1]);
+		if (bp + 3 >= ep) break;
+		(void)printf(" holdtime=");
+		relts_print(EXTRACT_16BITS(&bp[2]));
+		bp += 4;
+
+		/* Encoded-Unicast-RP-Address */
+		if (bp >= ep) break;
+		(void)printf(" RP=");
+		if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance;
+
+		/* Encoded-Group Addresses */
+		for (i = 0; i < pfxcnt && bp < ep; i++) {
+			(void)printf(" Group%d=", i);
+			if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
+			    < 0) {
+				(void)printf("...");
+				break;
+			}
+			bp += advance;
+		}
+		break;
+	}
+
+	case 9:
+		(void)printf(" Prune-Refresh");
+		(void)printf(" src=");
+		if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance;
+		(void)printf(" grp=");
+		if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance;
+		(void)printf(" forwarder=");
+		if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
+			(void)printf("...");
+			break;
+		}
+		bp += advance;
+		TCHECK2(bp[0], 2);
+		(void)printf(" TUNR ");
+		relts_print(EXTRACT_16BITS(bp));
+		break;
+
+
+	 default:
+		(void)printf(" [type %d]", PIM_TYPE(pim->pim_typever));
+		break;
+	}
+
+	return;
 
-    default:
-	(void)printf(" [type %d]", type);
-	break;
-    }
+trunc:
+	(void)printf("[|pim]");
 }