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Current Path: /usr/src/contrib/tcpdump

📁 ..
📄 CHANGES(57.87 KB)
📄 CONTRIBUTING(5.93 KB)
📄 CREDITS(14.57 KB)
📄 INSTALL.txt(5.25 KB)
📄 LICENSE(873 B)
📄 Makefile-devel-adds(614 B)
📄 Makefile.in(9.96 KB)
📄 PLATFORMS(567 B)
📄 README(9.04 KB)
📄 README.md(9.04 KB)
📄 VERSION(6 B)
📄 addrtoname.c(33.19 KB)
📄 addrtoname.h(2.78 KB)
📄 addrtostr.c(5.64 KB)
📄 addrtostr.h(2.03 KB)
📄 af.c(1.96 KB)
📄 af.h(1.81 KB)
📄 ah.h(2.34 KB)
📄 appletalk.h(4.06 KB)
📄 ascii_strcasecmp.c(3.5 KB)
📄 ascii_strcasecmp.h(1.49 KB)
📄 atime.awk(529 B)
📄 atm.h(1.14 KB)
📄 bpf_dump.c(1.9 KB)
📄 chdlc.h(1.31 KB)
📄 checksum.c(5.25 KB)
📄 config.guess(43.17 KB)
📄 config.h.in(11.19 KB)
📄 config.sub(34.93 KB)
📄 configure(255.88 KB)
📄 configure.ac(25.05 KB)
📄 configure.in(25.66 KB)
📄 cpack.c(3.92 KB)
📄 cpack.h(2.37 KB)
📄 ether.h(2.34 KB)
📄 ethertype.h(5.58 KB)
📄 extract.h(11.48 KB)
📄 funcattrs.h(4.42 KB)
📄 getopt_long.h(2.52 KB)
📄 gmpls.c(5.82 KB)
📄 gmpls.h(1.38 KB)
📄 gmt2local.c(2.01 KB)
📄 gmt2local.h(1.21 KB)
📄 in_cksum.c(6.44 KB)
📄 install-sh(5.45 KB)
📄 interface.h(2.29 KB)
📄 ip.h(5.75 KB)
📄 ip6.h(7.6 KB)
📄 ipproto.c(16.49 KB)
📄 ipproto.h(4.72 KB)
📄 l2vpn.c(3.36 KB)
📄 l2vpn.h(781 B)
📁 lbl
📄 llc.h(3.72 KB)
📄 machdep.c(2.58 KB)
📄 machdep.h(1.24 KB)
📄 makemib(6.41 KB)
📄 mib.h(26.33 KB)
📁 missing
📄 mkdep(2.43 KB)
📄 mpls.h(1.93 KB)
📄 nameser.h(10.8 KB)
📄 netdissect-stdinc.h(9.93 KB)
📄 netdissect.c(3.38 KB)
📄 netdissect.h(30.13 KB)
📄 nfs.h(13.37 KB)
📄 nfsfh.h(2.57 KB)
📄 nlpid.c(1.27 KB)
📄 nlpid.h(1.3 KB)
📄 openflow.h(2.14 KB)
📄 ospf.h(10.21 KB)
📄 oui.c(3.83 KB)
📄 oui.h(4.06 KB)
📄 packetdat.awk(1.39 KB)
📄 parsenfsfh.c(12.87 KB)
📄 pcap-missing.h(1.8 KB)
📄 pcap_dump_ftell.c(1.29 KB)
📄 ppp.h(3.07 KB)
📄 print-802_11.c(91.47 KB)
📄 print-802_15_4.c(5.5 KB)
📄 print-ah.c(2.02 KB)
📄 print-ahcp.c(10.73 KB)
📄 print-aodv.c(15.98 KB)
📄 print-aoe.c(11.13 KB)
📄 print-ap1394.c(4 KB)
📄 print-arcnet.c(8.83 KB)
📄 print-arp.c(14.57 KB)
📄 print-ascii.c(6.23 KB)
📄 print-atalk.c(16.76 KB)
📄 print-atm.c(16.81 KB)
📄 print-babel.c(23.79 KB)
📄 print-beep.c(1.71 KB)
📄 print-bfd.c(16.5 KB)
📄 print-bgp.c(99.77 KB)
📄 print-bootp.c(30.07 KB)
📄 print-bt.c(2.21 KB)
📄 print-calm-fast.c(1.81 KB)
📄 print-carp.c(2.43 KB)
📄 print-cdp.c(11.16 KB)
📄 print-cfm.c(24.19 KB)
📄 print-chdlc.c(5.88 KB)
📄 print-cip.c(2.5 KB)
📄 print-cnfp.c(13.69 KB)
📄 print-dccp.c(17.75 KB)
📄 print-decnet.c(37.63 KB)
📄 print-dhcp6.c(23.22 KB)
📄 print-domain.c(18.44 KB)
📄 print-dtp.c(3.03 KB)
📄 print-dvmrp.c(8.98 KB)
📄 print-eap.c(9.26 KB)
📄 print-egp.c(8.69 KB)
📄 print-eigrp.c(19.49 KB)
📄 print-enc.c(4.2 KB)
📄 print-esp.c(21.46 KB)
📄 print-ether.c(12.91 KB)
📄 print-fddi.c(10.51 KB)
📄 print-forces.c(45.01 KB)
📄 print-fr.c(31.99 KB)
📄 print-frag6.c(2.36 KB)
📄 print-ftp.c(973 B)
📄 print-geneve.c(6.13 KB)
📄 print-geonet.c(6.72 KB)
📄 print-gre.c(9.72 KB)
📄 print-hncp.c(26.39 KB)
📄 print-hsrp.c(4.57 KB)
📄 print-http.c(1.51 KB)
📄 print-icmp.c(22.7 KB)
📄 print-icmp6.c(59.81 KB)
📄 print-igmp.c(10.05 KB)
📄 print-igrp.c(4.64 KB)
📄 print-ip.c(17.04 KB)
📄 print-ip6.c(10.57 KB)
📄 print-ip6opts.c(5.53 KB)
📄 print-ipcomp.c(2.32 KB)
📄 print-ipfc.c(4.41 KB)
📄 print-ipnet.c(2.78 KB)
📄 print-ipx.c(6.42 KB)
📄 print-isakmp.c(81.72 KB)
📄 print-isoclns.c(107.61 KB)
📄 print-juniper.c(48.42 KB)
📄 print-krb.c(6.26 KB)
📄 print-l2tp.c(23.94 KB)
📄 print-lane.c(3.04 KB)
📄 print-ldp.c(24.35 KB)
📄 print-lisp.c(15.23 KB)
📄 print-llc.c(16.68 KB)
📄 print-lldp.c(57.26 KB)
📄 print-lmp.c(38.11 KB)
📄 print-loopback.c(3.63 KB)
📄 print-lspping.c(51.64 KB)
📄 print-lwapp.c(13.01 KB)
📄 print-lwres.c(14.08 KB)
📄 print-m3ua.c(10.92 KB)
📄 print-medsa.c(5.57 KB)
📄 print-mobile.c(3.28 KB)
📄 print-mobility.c(9.74 KB)
📄 print-mpcp.c(7.87 KB)
📄 print-mpls.c(5.31 KB)
📄 print-mptcp.c(13.68 KB)
📄 print-msdp.c(2.69 KB)
📄 print-msnlb.c(2.39 KB)
📄 print-nflog.c(4.4 KB)
📄 print-nfs.c(42.84 KB)
📄 print-nsh.c(5.39 KB)
📄 print-ntp.c(13.34 KB)
📄 print-null.c(4.01 KB)
📄 print-olsr.c(23.42 KB)
📄 print-openflow-1.0.c(76.63 KB)
📄 print-openflow.c(4.77 KB)
📄 print-ospf.c(39.49 KB)
📄 print-ospf6.c(29.86 KB)
📄 print-otv.c(2.1 KB)
📄 print-pflog.c(4.86 KB)
📄 print-pfsync.c(12.53 KB)
📄 print-pgm.c(22.17 KB)
📄 print-pim.c(32.59 KB)
📄 print-pktap.c(5.18 KB)
📄 print-ppi.c(2.68 KB)
📄 print-ppp.c(46.16 KB)
📄 print-pppoe.c(5.65 KB)
📄 print-pptp.c(25.9 KB)
📄 print-radius.c(35.1 KB)
📄 print-raw.c(1.52 KB)
📄 print-resp.c(16.5 KB)
📄 print-rip.c(9.19 KB)
📄 print-ripng.c(6 KB)
📄 print-rpki-rtr.c(10.83 KB)
📄 print-rrcp.c(4.56 KB)
📄 print-rsvp.c(78.61 KB)
📄 print-rt6.c(2.66 KB)
📄 print-rtsp.c(1.16 KB)
📄 print-rx.c(66.92 KB)
📄 print-sctp.c(23.13 KB)
📄 print-sflow.c(31.91 KB)
📄 print-sip.c(1.29 KB)
📄 print-sl.c(6.95 KB)
📄 print-sll.c(9.2 KB)
📄 print-slow.c(25.17 KB)
📄 print-smb.c(43.19 KB)
📄 print-smtp.c(983 B)
📄 print-snmp.c(43.17 KB)
📄 print-stp.c(17.18 KB)
📄 print-sunatm.c(3.27 KB)
📄 print-sunrpc.c(7.85 KB)
📄 print-symantec.c(3.78 KB)
📄 print-syslog.c(3.96 KB)
📄 print-tcp.c(35.84 KB)
📄 print-telnet.c(15.02 KB)
📄 print-tftp.c(5.2 KB)
📄 print-timed.c(4.74 KB)
📄 print-tipc.c(11.53 KB)
📄 print-token.c(7.96 KB)
📄 print-udld.c(5.47 KB)
📄 print-udp.c(21.28 KB)
📄 print-usb.c(4.18 KB)
📄 print-vjc.c(4.45 KB)
📄 print-vqp.c(6.8 KB)
📄 print-vrrp.c(6.37 KB)
📄 print-vtp.c(13.56 KB)
📄 print-vxlan-gpe.c(3.46 KB)
📄 print-vxlan.c(2.21 KB)
📄 print-wb.c(10.93 KB)
📄 print-zephyr.c(8.03 KB)
📄 print-zeromq.c(7.5 KB)
📄 print.c(11.54 KB)
📄 print.h(1.78 KB)
📄 rpc_auth.h(2.77 KB)
📄 rpc_msg.h(3.19 KB)
📄 rpl.h(4.88 KB)
📄 send-ack.awk(1.56 KB)
📄 setsignal.c(3.27 KB)
📄 setsignal.h(1.24 KB)
📄 signature.c(5.58 KB)
📄 signature.h(1.12 KB)
📄 slcompress.h(3.55 KB)
📄 smb.h(5.38 KB)
📄 smbutil.c(63.88 KB)
📄 stime.awk(567 B)
📄 strtoaddr.c(5.34 KB)
📄 strtoaddr.h(992 B)
📄 tcp.h(5.02 KB)
📄 tcpdump.1.in(60.82 KB)
📄 tcpdump.c(69.76 KB)
📄 timeval-operations.h(3.19 KB)
📄 udp.h(8.25 KB)
📄 util-print.c(23.75 KB)
📄 vfprintf.c(1.62 KB)

Editing: print-pgm.c

/*
 * 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, and (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.
 * 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.
 *
 * Original code by Andy Heffernan (ahh@juniper.net)
 */

/* \summary: Pragmatic General Multicast (PGM) printer */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <netdissect-stdinc.h>

#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
#include "addrtostr.h"

#include "ip.h"
#include "ip6.h"
#include "ipproto.h"
#include "af.h"

/*
 * PGM header (RFC 3208)
 */
struct pgm_header {
    uint16_t	pgm_sport;
    uint16_t	pgm_dport;
    uint8_t	pgm_type;
    uint8_t	pgm_options;
    uint16_t	pgm_sum;
    uint8_t	pgm_gsid[6];
    uint16_t	pgm_length;
};

struct pgm_spm {
    uint32_t	pgms_seq;
    uint32_t	pgms_trailseq;
    uint32_t	pgms_leadseq;
    uint16_t	pgms_nla_afi;
    uint16_t	pgms_reserved;
    /* ... uint8_t	pgms_nla[0]; */
    /* ... options */
};

struct pgm_nak {
    uint32_t	pgmn_seq;
    uint16_t	pgmn_source_afi;
    uint16_t	pgmn_reserved;
    /* ... uint8_t	pgmn_source[0]; */
    /* ... uint16_t	pgmn_group_afi */
    /* ... uint16_t	pgmn_reserved2; */
    /* ... uint8_t	pgmn_group[0]; */
    /* ... options */
};

struct pgm_ack {
    uint32_t	pgma_rx_max_seq;
    uint32_t	pgma_bitmap;
    /* ... options */
};

struct pgm_poll {
    uint32_t	pgmp_seq;
    uint16_t	pgmp_round;
    uint16_t	pgmp_reserved;
    /* ... options */
};

struct pgm_polr {
    uint32_t	pgmp_seq;
    uint16_t	pgmp_round;
    uint16_t	pgmp_subtype;
    uint16_t	pgmp_nla_afi;
    uint16_t	pgmp_reserved;
    /* ... uint8_t	pgmp_nla[0]; */
    /* ... options */
};

struct pgm_data {
    uint32_t	pgmd_seq;
    uint32_t	pgmd_trailseq;
    /* ... options */
};

typedef enum _pgm_type {
    PGM_SPM = 0,		/* source path message */
    PGM_POLL = 1,		/* POLL Request */
    PGM_POLR = 2,		/* POLL Response */
    PGM_ODATA = 4,		/* original data */
    PGM_RDATA = 5,		/* repair data */
    PGM_NAK = 8,		/* NAK */
    PGM_NULLNAK = 9,		/* Null NAK */
    PGM_NCF = 10,		/* NAK Confirmation */
    PGM_ACK = 11,		/* ACK for congestion control */
    PGM_SPMR = 12,		/* SPM request */
    PGM_MAX = 255
} pgm_type;

#define PGM_OPT_BIT_PRESENT	0x01
#define PGM_OPT_BIT_NETWORK	0x02
#define PGM_OPT_BIT_VAR_PKTLEN	0x40
#define PGM_OPT_BIT_PARITY	0x80

#define PGM_OPT_LENGTH		0x00
#define PGM_OPT_FRAGMENT        0x01
#define PGM_OPT_NAK_LIST        0x02
#define PGM_OPT_JOIN            0x03
#define PGM_OPT_NAK_BO_IVL	0x04
#define PGM_OPT_NAK_BO_RNG	0x05

#define PGM_OPT_REDIRECT        0x07
#define PGM_OPT_PARITY_PRM      0x08
#define PGM_OPT_PARITY_GRP      0x09
#define PGM_OPT_CURR_TGSIZE     0x0A
#define PGM_OPT_NBR_UNREACH	0x0B
#define PGM_OPT_PATH_NLA	0x0C

#define PGM_OPT_SYN             0x0D
#define PGM_OPT_FIN             0x0E
#define PGM_OPT_RST             0x0F
#define PGM_OPT_CR		0x10
#define PGM_OPT_CRQST		0x11

#define PGM_OPT_PGMCC_DATA	0x12
#define PGM_OPT_PGMCC_FEEDBACK	0x13

#define PGM_OPT_MASK		0x7f

#define PGM_OPT_END		0x80    /* end of options marker */

#define PGM_MIN_OPT_LEN		4

void
pgm_print(netdissect_options *ndo,
          register const u_char *bp, register u_int length,
          register const u_char *bp2)
{
	register const struct pgm_header *pgm;
	register const struct ip *ip;
	register char ch;
	uint16_t sport, dport;
	u_int nla_afnum;
	char nla_buf[INET6_ADDRSTRLEN];
	register const struct ip6_hdr *ip6;
	uint8_t opt_type, opt_len;
	uint32_t seq, opts_len, len, offset;

pgm = (const struct pgm_header *)bp;
	ip = (const struct ip *)bp2;
	if (IP_V(ip) == 6)
		ip6 = (const struct ip6_hdr *)bp2;
	else
		ip6 = NULL;
	ch = '\0';
	if (!ND_TTEST(pgm->pgm_dport)) {
		if (ip6) {
			ND_PRINT((ndo, "%s > %s: [|pgm]",
				ip6addr_string(ndo, &ip6->ip6_src),
				ip6addr_string(ndo, &ip6->ip6_dst)));
		} else {
			ND_PRINT((ndo, "%s > %s: [|pgm]",
				ipaddr_string(ndo, &ip->ip_src),
				ipaddr_string(ndo, &ip->ip_dst)));
		}
		return;
	}

sport = EXTRACT_16BITS(&pgm->pgm_sport);
	dport = EXTRACT_16BITS(&pgm->pgm_dport);

if (ip6) {
		if (ip6->ip6_nxt == IPPROTO_PGM) {
			ND_PRINT((ndo, "%s.%s > %s.%s: ",
				ip6addr_string(ndo, &ip6->ip6_src),
				tcpport_string(ndo, sport),
				ip6addr_string(ndo, &ip6->ip6_dst),
				tcpport_string(ndo, dport)));
		} else {
			ND_PRINT((ndo, "%s > %s: ",
				tcpport_string(ndo, sport), tcpport_string(ndo, dport)));
		}
	} else {
		if (ip->ip_p == IPPROTO_PGM) {
			ND_PRINT((ndo, "%s.%s > %s.%s: ",
				ipaddr_string(ndo, &ip->ip_src),
				tcpport_string(ndo, sport),
				ipaddr_string(ndo, &ip->ip_dst),
				tcpport_string(ndo, dport)));
		} else {
			ND_PRINT((ndo, "%s > %s: ",
				tcpport_string(ndo, sport), tcpport_string(ndo, dport)));
		}
	}

ND_TCHECK(*pgm);

ND_PRINT((ndo, "PGM, length %u", EXTRACT_16BITS(&pgm->pgm_length)));

if (!ndo->ndo_vflag)
            return;

ND_PRINT((ndo, " 0x%02x%02x%02x%02x%02x%02x ",
		     pgm->pgm_gsid[0],
                     pgm->pgm_gsid[1],
                     pgm->pgm_gsid[2],
		     pgm->pgm_gsid[3],
                     pgm->pgm_gsid[4],
                     pgm->pgm_gsid[5]));
	switch (pgm->pgm_type) {
	case PGM_SPM: {
	    const struct pgm_spm *spm;

spm = (const struct pgm_spm *)(pgm + 1);
	    ND_TCHECK(*spm);
	    bp = (const u_char *) (spm + 1);

switch (EXTRACT_16BITS(&spm->pgms_nla_afi)) {
	    case AFNUM_INET:
		ND_TCHECK2(*bp, sizeof(struct in_addr));
		addrtostr(bp, nla_buf, sizeof(nla_buf));
		bp += sizeof(struct in_addr);
		break;
	    case AFNUM_INET6:
		ND_TCHECK2(*bp, sizeof(struct in6_addr));
		addrtostr6(bp, nla_buf, sizeof(nla_buf));
		bp += sizeof(struct in6_addr);
		break;
	    default:
		goto trunc;
		break;
	    }

ND_PRINT((ndo, "SPM seq %u trail %u lead %u nla %s",
			 EXTRACT_32BITS(&spm->pgms_seq),
                         EXTRACT_32BITS(&spm->pgms_trailseq),
			 EXTRACT_32BITS(&spm->pgms_leadseq),
                         nla_buf));
	    break;
	}

case PGM_POLL: {
	    const struct pgm_poll *poll_msg;

poll_msg = (const struct pgm_poll *)(pgm + 1);
	    ND_TCHECK(*poll_msg);
	    ND_PRINT((ndo, "POLL seq %u round %u",
			 EXTRACT_32BITS(&poll_msg->pgmp_seq),
                         EXTRACT_16BITS(&poll_msg->pgmp_round)));
	    bp = (const u_char *) (poll_msg + 1);
	    break;
	}
	case PGM_POLR: {
	    const struct pgm_polr *polr;
	    uint32_t ivl, rnd, mask;

polr = (const struct pgm_polr *)(pgm + 1);
	    ND_TCHECK(*polr);
	    bp = (const u_char *) (polr + 1);

switch (EXTRACT_16BITS(&polr->pgmp_nla_afi)) {
	    case AFNUM_INET:
		ND_TCHECK2(*bp, sizeof(struct in_addr));
		addrtostr(bp, nla_buf, sizeof(nla_buf));
		bp += sizeof(struct in_addr);
		break;
	    case AFNUM_INET6:
		ND_TCHECK2(*bp, sizeof(struct in6_addr));
		addrtostr6(bp, nla_buf, sizeof(nla_buf));
		bp += sizeof(struct in6_addr);
		break;
	    default:
		goto trunc;
		break;
	    }

ND_TCHECK2(*bp, sizeof(uint32_t));
	    ivl = EXTRACT_32BITS(bp);
	    bp += sizeof(uint32_t);

ND_TCHECK2(*bp, sizeof(uint32_t));
	    rnd = EXTRACT_32BITS(bp);
	    bp += sizeof(uint32_t);

ND_TCHECK2(*bp, sizeof(uint32_t));
	    mask = EXTRACT_32BITS(bp);
	    bp += sizeof(uint32_t);

ND_PRINT((ndo, "POLR seq %u round %u nla %s ivl %u rnd 0x%08x "
			 "mask 0x%08x", EXTRACT_32BITS(&polr->pgmp_seq),
			 EXTRACT_16BITS(&polr->pgmp_round), nla_buf, ivl, rnd, mask));
	    break;
	}
	case PGM_ODATA: {
	    const struct pgm_data *odata;

odata = (const struct pgm_data *)(pgm + 1);
	    ND_TCHECK(*odata);
	    ND_PRINT((ndo, "ODATA trail %u seq %u",
			 EXTRACT_32BITS(&odata->pgmd_trailseq),
			 EXTRACT_32BITS(&odata->pgmd_seq)));
	    bp = (const u_char *) (odata + 1);
	    break;
	}

case PGM_RDATA: {
	    const struct pgm_data *rdata;

rdata = (const struct pgm_data *)(pgm + 1);
	    ND_TCHECK(*rdata);
	    ND_PRINT((ndo, "RDATA trail %u seq %u",
			 EXTRACT_32BITS(&rdata->pgmd_trailseq),
			 EXTRACT_32BITS(&rdata->pgmd_seq)));
	    bp = (const u_char *) (rdata + 1);
	    break;
	}

case PGM_NAK:
	case PGM_NULLNAK:
	case PGM_NCF: {
	    const struct pgm_nak *nak;
	    char source_buf[INET6_ADDRSTRLEN], group_buf[INET6_ADDRSTRLEN];

nak = (const struct pgm_nak *)(pgm + 1);
	    ND_TCHECK(*nak);
	    bp = (const u_char *) (nak + 1);

/*
	     * Skip past the source, saving info along the way
	     * and stopping if we don't have enough.
	     */
	    switch (EXTRACT_16BITS(&nak->pgmn_source_afi)) {
	    case AFNUM_INET:
		ND_TCHECK2(*bp, sizeof(struct in_addr));
		addrtostr(bp, source_buf, sizeof(source_buf));
		bp += sizeof(struct in_addr);
		break;
	    case AFNUM_INET6:
		ND_TCHECK2(*bp, sizeof(struct in6_addr));
		addrtostr6(bp, source_buf, sizeof(source_buf));
		bp += sizeof(struct in6_addr);
		break;
	    default:
		goto trunc;
		break;
	    }

/*
	     * Skip past the group, saving info along the way
	     * and stopping if we don't have enough.
	     */
	    bp += (2 * sizeof(uint16_t));
	    ND_TCHECK_16BITS(bp);
	    switch (EXTRACT_16BITS(bp)) {
	    case AFNUM_INET:
		ND_TCHECK2(*bp, sizeof(struct in_addr));
		addrtostr(bp, group_buf, sizeof(group_buf));
		bp += sizeof(struct in_addr);
		break;
	    case AFNUM_INET6:
		ND_TCHECK2(*bp, sizeof(struct in6_addr));
		addrtostr6(bp, group_buf, sizeof(group_buf));
		bp += sizeof(struct in6_addr);
		break;
	    default:
		goto trunc;
		break;
	    }

/*
	     * Options decoding can go here.
	     */
	    switch (pgm->pgm_type) {
		case PGM_NAK:
		    ND_PRINT((ndo, "NAK "));
		    break;
		case PGM_NULLNAK:
		    ND_PRINT((ndo, "NNAK "));
		    break;
		case PGM_NCF:
		    ND_PRINT((ndo, "NCF "));
		    break;
		default:
                    break;
	    }
	    ND_PRINT((ndo, "(%s -> %s), seq %u",
			 source_buf, group_buf, EXTRACT_32BITS(&nak->pgmn_seq)));
	    break;
	}

case PGM_ACK: {
	    const struct pgm_ack *ack;

ack = (const struct pgm_ack *)(pgm + 1);
	    ND_TCHECK(*ack);
	    ND_PRINT((ndo, "ACK seq %u",
			 EXTRACT_32BITS(&ack->pgma_rx_max_seq)));
	    bp = (const u_char *) (ack + 1);
	    break;
	}

case PGM_SPMR:
	    ND_PRINT((ndo, "SPMR"));
	    break;

default:
	    ND_PRINT((ndo, "UNKNOWN type 0x%02x", pgm->pgm_type));
	    break;

}
	if (pgm->pgm_options & PGM_OPT_BIT_PRESENT) {

/*
	     * make sure there's enough for the first option header
	     */
	    if (!ND_TTEST2(*bp, PGM_MIN_OPT_LEN)) {
		ND_PRINT((ndo, "[|OPT]"));
		return;
	    }

/*
	     * That option header MUST be an OPT_LENGTH option
	     * (see the first paragraph of section 9.1 in RFC 3208).
	     */
	    opt_type = *bp++;
	    if ((opt_type & PGM_OPT_MASK) != PGM_OPT_LENGTH) {
		ND_PRINT((ndo, "[First option bad, should be PGM_OPT_LENGTH, is %u]", opt_type & PGM_OPT_MASK));
		return;
	    }
	    opt_len = *bp++;
	    if (opt_len != 4) {
		ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != 4]", opt_len));
		return;
	    }
	    opts_len = EXTRACT_16BITS(bp);
	    if (opts_len < 4) {
		ND_PRINT((ndo, "[Bad total option length %u < 4]", opts_len));
		return;
	    }
	    bp += sizeof(uint16_t);
	    ND_PRINT((ndo, " OPTS LEN %d", opts_len));
	    opts_len -= 4;

while (opts_len) {
		if (opts_len < PGM_MIN_OPT_LEN) {
		    ND_PRINT((ndo, "[Total option length leaves no room for final option]"));
		    return;
		}
		if (!ND_TTEST2(*bp, 2)) {
		    ND_PRINT((ndo, " [|OPT]"));
		    return;
		}
		opt_type = *bp++;
		opt_len = *bp++;
		if (opt_len < PGM_MIN_OPT_LEN) {
		    ND_PRINT((ndo, "[Bad option, length %u < %u]", opt_len,
		        PGM_MIN_OPT_LEN));
		    break;
		}
		if (opts_len < opt_len) {
		    ND_PRINT((ndo, "[Total option length leaves no room for final option]"));
		    return;
		}
		if (!ND_TTEST2(*bp, opt_len - 2)) {
		    ND_PRINT((ndo, " [|OPT]"));
		    return;
		}

switch (opt_type & PGM_OPT_MASK) {
		case PGM_OPT_LENGTH:
#define PGM_OPT_LENGTH_LEN	(2+2)
		    if (opt_len != PGM_OPT_LENGTH_LEN) {
			ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != %u]",
			    opt_len, PGM_OPT_LENGTH_LEN));
			return;
		    }
		    ND_PRINT((ndo, " OPTS LEN (extra?) %d", EXTRACT_16BITS(bp)));
		    bp += 2;
		    opts_len -= PGM_OPT_LENGTH_LEN;
		    break;

case PGM_OPT_FRAGMENT:
#define PGM_OPT_FRAGMENT_LEN	(2+2+4+4+4)
		    if (opt_len != PGM_OPT_FRAGMENT_LEN) {
			ND_PRINT((ndo, "[Bad OPT_FRAGMENT option, length %u != %u]",
			    opt_len, PGM_OPT_FRAGMENT_LEN));
			return;
		    }
		    bp += 2;
		    seq = EXTRACT_32BITS(bp);
		    bp += 4;
		    offset = EXTRACT_32BITS(bp);
		    bp += 4;
		    len = EXTRACT_32BITS(bp);
		    bp += 4;
		    ND_PRINT((ndo, " FRAG seq %u off %u len %u", seq, offset, len));
		    opts_len -= PGM_OPT_FRAGMENT_LEN;
		    break;

case PGM_OPT_NAK_LIST:
		    bp += 2;
		    opt_len -= 4;	/* option header */
		    ND_PRINT((ndo, " NAK LIST"));
		    while (opt_len) {
			if (opt_len < 4) {
			    ND_PRINT((ndo, "[Option length not a multiple of 4]"));
			    return;
			}
			ND_TCHECK2(*bp, 4);
			ND_PRINT((ndo, " %u", EXTRACT_32BITS(bp)));
			bp += 4;
			opt_len -= 4;
			opts_len -= 4;
		    }
		    break;

case PGM_OPT_JOIN:
#define PGM_OPT_JOIN_LEN	(2+2+4)
		    if (opt_len != PGM_OPT_JOIN_LEN) {
			ND_PRINT((ndo, "[Bad OPT_JOIN option, length %u != %u]",
			    opt_len, PGM_OPT_JOIN_LEN));
			return;
		    }
		    bp += 2;
		    seq = EXTRACT_32BITS(bp);
		    bp += 4;
		    ND_PRINT((ndo, " JOIN %u", seq));
		    opts_len -= PGM_OPT_JOIN_LEN;
		    break;

case PGM_OPT_NAK_BO_IVL:
#define PGM_OPT_NAK_BO_IVL_LEN	(2+2+4+4)
		    if (opt_len != PGM_OPT_NAK_BO_IVL_LEN) {
			ND_PRINT((ndo, "[Bad OPT_NAK_BO_IVL option, length %u != %u]",
			    opt_len, PGM_OPT_NAK_BO_IVL_LEN));
			return;
		    }
		    bp += 2;
		    offset = EXTRACT_32BITS(bp);
		    bp += 4;
		    seq = EXTRACT_32BITS(bp);
		    bp += 4;
		    ND_PRINT((ndo, " BACKOFF ivl %u ivlseq %u", offset, seq));
		    opts_len -= PGM_OPT_NAK_BO_IVL_LEN;
		    break;

case PGM_OPT_NAK_BO_RNG:
#define PGM_OPT_NAK_BO_RNG_LEN	(2+2+4+4)
		    if (opt_len != PGM_OPT_NAK_BO_RNG_LEN) {
			ND_PRINT((ndo, "[Bad OPT_NAK_BO_RNG option, length %u != %u]",
			    opt_len, PGM_OPT_NAK_BO_RNG_LEN));
			return;
		    }
		    bp += 2;
		    offset = EXTRACT_32BITS(bp);
		    bp += 4;
		    seq = EXTRACT_32BITS(bp);
		    bp += 4;
		    ND_PRINT((ndo, " BACKOFF max %u min %u", offset, seq));
		    opts_len -= PGM_OPT_NAK_BO_RNG_LEN;
		    break;

case PGM_OPT_REDIRECT:
#define PGM_OPT_REDIRECT_FIXED_LEN	(2+2+2+2)
		    if (opt_len < PGM_OPT_REDIRECT_FIXED_LEN) {
			ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u < %u]",
			    opt_len, PGM_OPT_REDIRECT_FIXED_LEN));
			return;
		    }
		    bp += 2;
		    nla_afnum = EXTRACT_16BITS(bp);
		    bp += 2+2;
		    switch (nla_afnum) {
		    case AFNUM_INET:
			if (opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in_addr)) {
			    ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != %u + address size]",
			        opt_len, PGM_OPT_REDIRECT_FIXED_LEN));
			    return;
			}
			ND_TCHECK2(*bp, sizeof(struct in_addr));
			addrtostr(bp, nla_buf, sizeof(nla_buf));
			bp += sizeof(struct in_addr);
			opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in_addr);
			break;
		    case AFNUM_INET6:
			if (opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in6_addr)) {
			    ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != %u + address size]",
			        PGM_OPT_REDIRECT_FIXED_LEN, opt_len));
			    return;
			}
			ND_TCHECK2(*bp, sizeof(struct in6_addr));
			addrtostr6(bp, nla_buf, sizeof(nla_buf));
			bp += sizeof(struct in6_addr);
			opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof(struct in6_addr);
			break;
		    default:
			goto trunc;
			break;
		    }

ND_PRINT((ndo, " REDIRECT %s",  nla_buf));
		    break;

case PGM_OPT_PARITY_PRM:
#define PGM_OPT_PARITY_PRM_LEN	(2+2+4)
		    if (opt_len != PGM_OPT_PARITY_PRM_LEN) {
			ND_PRINT((ndo, "[Bad OPT_PARITY_PRM option, length %u != %u]",
			    opt_len, PGM_OPT_PARITY_PRM_LEN));
			return;
		    }
		    bp += 2;
		    len = EXTRACT_32BITS(bp);
		    bp += 4;
		    ND_PRINT((ndo, " PARITY MAXTGS %u", len));
		    opts_len -= PGM_OPT_PARITY_PRM_LEN;
		    break;

case PGM_OPT_PARITY_GRP:
#define PGM_OPT_PARITY_GRP_LEN	(2+2+4)
		    if (opt_len != PGM_OPT_PARITY_GRP_LEN) {
			ND_PRINT((ndo, "[Bad OPT_PARITY_GRP option, length %u != %u]",
			    opt_len, PGM_OPT_PARITY_GRP_LEN));
			return;
		    }
		    bp += 2;
		    seq = EXTRACT_32BITS(bp);
		    bp += 4;
		    ND_PRINT((ndo, " PARITY GROUP %u", seq));
		    opts_len -= PGM_OPT_PARITY_GRP_LEN;
		    break;

case PGM_OPT_CURR_TGSIZE:
#define PGM_OPT_CURR_TGSIZE_LEN	(2+2+4)
		    if (opt_len != PGM_OPT_CURR_TGSIZE_LEN) {
			ND_PRINT((ndo, "[Bad OPT_CURR_TGSIZE option, length %u != %u]",
			    opt_len, PGM_OPT_CURR_TGSIZE_LEN));
			return;
		    }
		    bp += 2;
		    len = EXTRACT_32BITS(bp);
		    bp += 4;
		    ND_PRINT((ndo, " PARITY ATGS %u", len));
		    opts_len -= PGM_OPT_CURR_TGSIZE_LEN;
		    break;

case PGM_OPT_NBR_UNREACH:
#define PGM_OPT_NBR_UNREACH_LEN	(2+2)
		    if (opt_len != PGM_OPT_NBR_UNREACH_LEN) {
			ND_PRINT((ndo, "[Bad OPT_NBR_UNREACH option, length %u != %u]",
			    opt_len, PGM_OPT_NBR_UNREACH_LEN));
			return;
		    }
		    bp += 2;
		    ND_PRINT((ndo, " NBR_UNREACH"));
		    opts_len -= PGM_OPT_NBR_UNREACH_LEN;
		    break;

case PGM_OPT_PATH_NLA:
		    ND_PRINT((ndo, " PATH_NLA [%d]", opt_len));
		    bp += opt_len;
		    opts_len -= opt_len;
		    break;

case PGM_OPT_SYN:
#define PGM_OPT_SYN_LEN	(2+2)
		    if (opt_len != PGM_OPT_SYN_LEN) {
			ND_PRINT((ndo, "[Bad OPT_SYN option, length %u != %u]",
			    opt_len, PGM_OPT_SYN_LEN));
			return;
		    }
		    bp += 2;
		    ND_PRINT((ndo, " SYN"));
		    opts_len -= PGM_OPT_SYN_LEN;
		    break;

case PGM_OPT_FIN:
#define PGM_OPT_FIN_LEN	(2+2)
		    if (opt_len != PGM_OPT_FIN_LEN) {
			ND_PRINT((ndo, "[Bad OPT_FIN option, length %u != %u]",
			    opt_len, PGM_OPT_FIN_LEN));
			return;
		    }
		    bp += 2;
		    ND_PRINT((ndo, " FIN"));
		    opts_len -= PGM_OPT_FIN_LEN;
		    break;

case PGM_OPT_RST:
#define PGM_OPT_RST_LEN	(2+2)
		    if (opt_len != PGM_OPT_RST_LEN) {
			ND_PRINT((ndo, "[Bad OPT_RST option, length %u != %u]",
			    opt_len, PGM_OPT_RST_LEN));
			return;
		    }
		    bp += 2;
		    ND_PRINT((ndo, " RST"));
		    opts_len -= PGM_OPT_RST_LEN;
		    break;

case PGM_OPT_CR:
		    ND_PRINT((ndo, " CR"));
		    bp += opt_len;
		    opts_len -= opt_len;
		    break;

case PGM_OPT_CRQST:
#define PGM_OPT_CRQST_LEN	(2+2)
		    if (opt_len != PGM_OPT_CRQST_LEN) {
			ND_PRINT((ndo, "[Bad OPT_CRQST option, length %u != %u]",
			    opt_len, PGM_OPT_CRQST_LEN));
			return;
		    }
		    bp += 2;
		    ND_PRINT((ndo, " CRQST"));
		    opts_len -= PGM_OPT_CRQST_LEN;
		    break;

case PGM_OPT_PGMCC_DATA:
#define PGM_OPT_PGMCC_DATA_FIXED_LEN	(2+2+4+2+2)
		    if (opt_len < PGM_OPT_PGMCC_DATA_FIXED_LEN) {
			ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u < %u]",
			    opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN));
			return;
		    }
		    bp += 2;
		    offset = EXTRACT_32BITS(bp);
		    bp += 4;
		    nla_afnum = EXTRACT_16BITS(bp);
		    bp += 2+2;
		    switch (nla_afnum) {
		    case AFNUM_INET:
			if (opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in_addr)) {
			    ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != %u + address size]",
			        opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN));
			    return;
			}
			ND_TCHECK2(*bp, sizeof(struct in_addr));
			addrtostr(bp, nla_buf, sizeof(nla_buf));
			bp += sizeof(struct in_addr);
			opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in_addr);
			break;
		    case AFNUM_INET6:
			if (opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in6_addr)) {
			    ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != %u + address size]",
			        opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN));
			    return;
			}
			ND_TCHECK2(*bp, sizeof(struct in6_addr));
			addrtostr6(bp, nla_buf, sizeof(nla_buf));
			bp += sizeof(struct in6_addr);
			opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(struct in6_addr);
			break;
		    default:
			goto trunc;
			break;
		    }

ND_PRINT((ndo, " PGMCC DATA %u %s", offset, nla_buf));
		    break;

case PGM_OPT_PGMCC_FEEDBACK:
#define PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN	(2+2+4+2+2)
		    if (opt_len < PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN) {
			ND_PRINT((ndo, "[Bad PGM_OPT_PGMCC_FEEDBACK option, length %u < %u]",
			    opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN));
			return;
		    }
		    bp += 2;
		    offset = EXTRACT_32BITS(bp);
		    bp += 4;
		    nla_afnum = EXTRACT_16BITS(bp);
		    bp += 2+2;
		    switch (nla_afnum) {
		    case AFNUM_INET:
			if (opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in_addr)) {
			    ND_PRINT((ndo, "[Bad OPT_PGMCC_FEEDBACK option, length %u != %u + address size]",
			        opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN));
			    return;
			}
			ND_TCHECK2(*bp, sizeof(struct in_addr));
			addrtostr(bp, nla_buf, sizeof(nla_buf));
			bp += sizeof(struct in_addr);
			opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in_addr);
			break;
		    case AFNUM_INET6:
			if (opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in6_addr)) {
			    ND_PRINT((ndo, "[Bad OPT_PGMCC_FEEDBACK option, length %u != %u + address size]",
			        opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN));
			    return;
			}
			ND_TCHECK2(*bp, sizeof(struct in6_addr));
			addrtostr6(bp, nla_buf, sizeof(nla_buf));
			bp += sizeof(struct in6_addr);
			opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(struct in6_addr);
			break;
		    default:
			goto trunc;
			break;
		    }

ND_PRINT((ndo, " PGMCC FEEDBACK %u %s", offset, nla_buf));
		    break;

default:
		    ND_PRINT((ndo, " OPT_%02X [%d] ", opt_type, opt_len));
		    bp += opt_len;
		    opts_len -= opt_len;
		    break;
		}

if (opt_type & PGM_OPT_END)
		    break;
	     }
	}

ND_PRINT((ndo, " [%u]", length));
	if (ndo->ndo_packettype == PT_PGM_ZMTP1 &&
	    (pgm->pgm_type == PGM_ODATA || pgm->pgm_type == PGM_RDATA))
		zmtp1_print_datagram(ndo, bp, EXTRACT_16BITS(&pgm->pgm_length));

return;

trunc:
	ND_PRINT((ndo, "[|pgm]"));
	if (ch != '\0')
		ND_PRINT((ndo, ">"));
}

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