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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-arp.c

/*
 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
 *	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.
 */

/* \summary: Address Resolution Protocol (ARP) printer */

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

#include <netdissect-stdinc.h>

#include <string.h>

#include "netdissect.h"
#include "addrtoname.h"
#include "ether.h"
#include "ethertype.h"
#include "extract.h"

static const char tstr[] = "[|ARP]";

/*
 * Address Resolution Protocol.
 *
 * See RFC 826 for protocol description.  ARP packets are variable
 * in size; the arphdr structure defines the fixed-length portion.
 * Protocol type values are the same as those for 10 Mb/s Ethernet.
 * It is followed by the variable-sized fields ar_sha, arp_spa,
 * arp_tha and arp_tpa in that order, according to the lengths
 * specified.  Field names used correspond to RFC 826.
 */
struct  arp_pkthdr {
        u_short ar_hrd;         /* format of hardware address */
#define ARPHRD_ETHER    1       /* ethernet hardware format */
#define ARPHRD_IEEE802  6       /* token-ring hardware format */
#define ARPHRD_ARCNET   7       /* arcnet hardware format */
#define ARPHRD_FRELAY   15      /* frame relay hardware format */
#define ARPHRD_ATM2225  19      /* ATM (RFC 2225) */
#define ARPHRD_STRIP    23      /* Ricochet Starmode Radio hardware format */
#define ARPHRD_IEEE1394 24      /* IEEE 1394 (FireWire) hardware format */
        u_short ar_pro;         /* format of protocol address */
        u_char  ar_hln;         /* length of hardware address */
        u_char  ar_pln;         /* length of protocol address */
        u_short ar_op;          /* one of: */
#define ARPOP_REQUEST   1       /* request to resolve address */
#define ARPOP_REPLY     2       /* response to previous request */
#define ARPOP_REVREQUEST 3      /* request protocol address given hardware */
#define ARPOP_REVREPLY  4       /* response giving protocol address */
#define ARPOP_INVREQUEST 8      /* request to identify peer */
#define ARPOP_INVREPLY  9       /* response identifying peer */
#define ARPOP_NAK       10      /* NAK - only valif for ATM ARP */

/*
 * The remaining fields are variable in size,
 * according to the sizes above.
 */
#ifdef COMMENT_ONLY
	u_char	ar_sha[];	/* sender hardware address */
	u_char	ar_spa[];	/* sender protocol address */
	u_char	ar_tha[];	/* target hardware address */
	u_char	ar_tpa[];	/* target protocol address */
#endif
#define ar_sha(ap)	(((const u_char *)((ap)+1))+  0)
#define ar_spa(ap)	(((const u_char *)((ap)+1))+  (ap)->ar_hln)
#define ar_tha(ap)	(((const u_char *)((ap)+1))+  (ap)->ar_hln+(ap)->ar_pln)
#define ar_tpa(ap)	(((const u_char *)((ap)+1))+2*(ap)->ar_hln+(ap)->ar_pln)
};

#define ARP_HDRLEN	8

#define HRD(ap) EXTRACT_16BITS(&(ap)->ar_hrd)
#define HRD_LEN(ap) ((ap)->ar_hln)
#define PROTO_LEN(ap) ((ap)->ar_pln)
#define OP(ap)  EXTRACT_16BITS(&(ap)->ar_op)
#define PRO(ap) EXTRACT_16BITS(&(ap)->ar_pro)
#define SHA(ap) (ar_sha(ap))
#define SPA(ap) (ar_spa(ap))
#define THA(ap) (ar_tha(ap))
#define TPA(ap) (ar_tpa(ap))

static const struct tok arpop_values[] = {
    { ARPOP_REQUEST, "Request" },
    { ARPOP_REPLY, "Reply" },
    { ARPOP_REVREQUEST, "Reverse Request" },
    { ARPOP_REVREPLY, "Reverse Reply" },
    { ARPOP_INVREQUEST, "Inverse Request" },
    { ARPOP_INVREPLY, "Inverse Reply" },
    { ARPOP_NAK, "NACK Reply" },
    { 0, NULL }
};

static const struct tok arphrd_values[] = {
    { ARPHRD_ETHER, "Ethernet" },
    { ARPHRD_IEEE802, "TokenRing" },
    { ARPHRD_ARCNET, "ArcNet" },
    { ARPHRD_FRELAY, "FrameRelay" },
    { ARPHRD_STRIP, "Strip" },
    { ARPHRD_IEEE1394, "IEEE 1394" },
    { ARPHRD_ATM2225, "ATM" },
    { 0, NULL }
};

/*
 * ATM Address Resolution Protocol.
 *
 * See RFC 2225 for protocol description.  ATMARP packets are similar
 * to ARP packets, except that there are no length fields for the
 * protocol address - instead, there are type/length fields for
 * the ATM number and subaddress - and the hardware addresses consist
 * of an ATM number and an ATM subaddress.
 */
struct  atmarp_pkthdr {
        u_short aar_hrd;        /* format of hardware address */
        u_short aar_pro;        /* format of protocol address */
        u_char  aar_shtl;       /* length of source ATM number */
        u_char  aar_sstl;       /* length of source ATM subaddress */
#define ATMARP_IS_E164  0x40    /* bit in type/length for E.164 format */
#define ATMARP_LEN_MASK 0x3F    /* length of {sub}address in type/length */
        u_short aar_op;         /* same as regular ARP */
        u_char  aar_spln;       /* length of source protocol address */
        u_char  aar_thtl;       /* length of target ATM number */
        u_char  aar_tstl;       /* length of target ATM subaddress */
        u_char  aar_tpln;       /* length of target protocol address */
/*
 * The remaining fields are variable in size,
 * according to the sizes above.
 */
#ifdef COMMENT_ONLY
	u_char	aar_sha[];	/* source ATM number */
	u_char	aar_ssa[];	/* source ATM subaddress */
	u_char	aar_spa[];	/* sender protocol address */
	u_char	aar_tha[];	/* target ATM number */
	u_char	aar_tsa[];	/* target ATM subaddress */
	u_char	aar_tpa[];	/* target protocol address */
#endif

#define ATMHRD(ap)  EXTRACT_16BITS(&(ap)->aar_hrd)
#define ATMSHRD_LEN(ap) ((ap)->aar_shtl & ATMARP_LEN_MASK)
#define ATMSSLN(ap) ((ap)->aar_sstl & ATMARP_LEN_MASK)
#define ATMSPROTO_LEN(ap) ((ap)->aar_spln)
#define ATMOP(ap)   EXTRACT_16BITS(&(ap)->aar_op)
#define ATMPRO(ap)  EXTRACT_16BITS(&(ap)->aar_pro)
#define ATMTHRD_LEN(ap) ((ap)->aar_thtl & ATMARP_LEN_MASK)
#define ATMTSLN(ap) ((ap)->aar_tstl & ATMARP_LEN_MASK)
#define ATMTPROTO_LEN(ap) ((ap)->aar_tpln)
#define aar_sha(ap)	((const u_char *)((ap)+1))
#define aar_ssa(ap)	(aar_sha(ap) + ATMSHRD_LEN(ap))
#define aar_spa(ap)	(aar_ssa(ap) + ATMSSLN(ap))
#define aar_tha(ap)	(aar_spa(ap) + ATMSPROTO_LEN(ap))
#define aar_tsa(ap)	(aar_tha(ap) + ATMTHRD_LEN(ap))
#define aar_tpa(ap)	(aar_tsa(ap) + ATMTSLN(ap))
};

#define ATMSHA(ap) (aar_sha(ap))
#define ATMSSA(ap) (aar_ssa(ap))
#define ATMSPA(ap) (aar_spa(ap))
#define ATMTHA(ap) (aar_tha(ap))
#define ATMTSA(ap) (aar_tsa(ap))
#define ATMTPA(ap) (aar_tpa(ap))

static int
isnonzero(const u_char *a, size_t len)
{
	while (len > 0) {
		if (*a != 0)
			return (1);
		a++;
		len--;
	}
	return (0);
}

static void
tpaddr_print_ip(netdissect_options *ndo,
	        const struct arp_pkthdr *ap, u_short pro)
{
	if (pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL)
		ND_PRINT((ndo, "<wrong proto type>"));
	else if (PROTO_LEN(ap) != 4)
		ND_PRINT((ndo, "<wrong len>"));
	else
		ND_PRINT((ndo, "%s", ipaddr_string(ndo, TPA(ap))));
}

static void
spaddr_print_ip(netdissect_options *ndo,
	        const struct arp_pkthdr *ap, u_short pro)
{
	if (pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL)
		ND_PRINT((ndo, "<wrong proto type>"));
	else if (PROTO_LEN(ap) != 4)
		ND_PRINT((ndo, "<wrong len>"));
	else
		ND_PRINT((ndo, "%s", ipaddr_string(ndo, SPA(ap))));
}

static void
atmarp_addr_print(netdissect_options *ndo,
		  const u_char *ha, u_int ha_len, const u_char *srca,
    u_int srca_len)
{
	if (ha_len == 0)
		ND_PRINT((ndo, "<No address>"));
	else {
		ND_PRINT((ndo, "%s", linkaddr_string(ndo, ha, LINKADDR_ATM, ha_len)));
		if (srca_len != 0)
			ND_PRINT((ndo, ",%s",
				  linkaddr_string(ndo, srca, LINKADDR_ATM, srca_len)));
	}
}

static void
atmarp_tpaddr_print(netdissect_options *ndo,
		    const struct atmarp_pkthdr *ap, u_short pro)
{
	if (pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL)
		ND_PRINT((ndo, "<wrong proto type>"));
	else if (ATMTPROTO_LEN(ap) != 4)
		ND_PRINT((ndo, "<wrong tplen>"));
	else
		ND_PRINT((ndo, "%s", ipaddr_string(ndo, ATMTPA(ap))));
}

static void
atmarp_spaddr_print(netdissect_options *ndo,
		    const struct atmarp_pkthdr *ap, u_short pro)
{
	if (pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL)
		ND_PRINT((ndo, "<wrong proto type>"));
	else if (ATMSPROTO_LEN(ap) != 4)
		ND_PRINT((ndo, "<wrong splen>"));
	else
		ND_PRINT((ndo, "%s", ipaddr_string(ndo, ATMSPA(ap))));
}

static void
atmarp_print(netdissect_options *ndo,
	     const u_char *bp, u_int length, u_int caplen)
{
	const struct atmarp_pkthdr *ap;
	u_short pro, hrd, op;

ap = (const struct atmarp_pkthdr *)bp;
	ND_TCHECK(*ap);

hrd = ATMHRD(ap);
	pro = ATMPRO(ap);
	op = ATMOP(ap);

if (!ND_TTEST2(*aar_tpa(ap), ATMTPROTO_LEN(ap))) {
		ND_PRINT((ndo, "%s", tstr));
		ND_DEFAULTPRINT((const u_char *)ap, length);
		return;
	}

if (!ndo->ndo_eflag) {
            ND_PRINT((ndo, "ARP, "));
        }

if ((pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL) ||
	    ATMSPROTO_LEN(ap) != 4 ||
            ATMTPROTO_LEN(ap) != 4 ||
            ndo->ndo_vflag) {
                ND_PRINT((ndo, "%s, %s (len %u/%u)",
                          tok2str(arphrd_values, "Unknown Hardware (%u)", hrd),
                          tok2str(ethertype_values, "Unknown Protocol (0x%04x)", pro),
                          ATMSPROTO_LEN(ap),
                          ATMTPROTO_LEN(ap)));

/* don't know know about the address formats */
                if (!ndo->ndo_vflag) {
                    goto out;
                }
	}

/* print operation */
        ND_PRINT((ndo, "%s%s ",
               ndo->ndo_vflag ? ", " : "",
               tok2str(arpop_values, "Unknown (%u)", op)));

switch (op) {

case ARPOP_REQUEST:
		ND_PRINT((ndo, "who-has "));
		atmarp_tpaddr_print(ndo, ap, pro);
		if (ATMTHRD_LEN(ap) != 0) {
			ND_PRINT((ndo, " ("));
			atmarp_addr_print(ndo, ATMTHA(ap), ATMTHRD_LEN(ap),
			    ATMTSA(ap), ATMTSLN(ap));
			ND_PRINT((ndo, ")"));
		}
		ND_PRINT((ndo, " tell "));
		atmarp_spaddr_print(ndo, ap, pro);
		break;

case ARPOP_REPLY:
		atmarp_spaddr_print(ndo, ap, pro);
		ND_PRINT((ndo, " is-at "));
		atmarp_addr_print(ndo, ATMSHA(ap), ATMSHRD_LEN(ap), ATMSSA(ap),
                                  ATMSSLN(ap));
		break;

case ARPOP_INVREQUEST:
		ND_PRINT((ndo, "who-is "));
		atmarp_addr_print(ndo, ATMTHA(ap), ATMTHRD_LEN(ap), ATMTSA(ap),
		    ATMTSLN(ap));
		ND_PRINT((ndo, " tell "));
		atmarp_addr_print(ndo, ATMSHA(ap), ATMSHRD_LEN(ap), ATMSSA(ap),
		    ATMSSLN(ap));
		break;

case ARPOP_INVREPLY:
		atmarp_addr_print(ndo, ATMSHA(ap), ATMSHRD_LEN(ap), ATMSSA(ap),
		    ATMSSLN(ap));
		ND_PRINT((ndo, "at "));
		atmarp_spaddr_print(ndo, ap, pro);
		break;

case ARPOP_NAK:
		ND_PRINT((ndo, "for "));
		atmarp_spaddr_print(ndo, ap, pro);
		break;

default:
		ND_DEFAULTPRINT((const u_char *)ap, caplen);
		return;
	}

out:
        ND_PRINT((ndo, ", length %u", length));
        return;

trunc:
	ND_PRINT((ndo, "%s", tstr));
}

void
arp_print(netdissect_options *ndo,
	  const u_char *bp, u_int length, u_int caplen)
{
	const struct arp_pkthdr *ap;
	u_short pro, hrd, op, linkaddr;

ap = (const struct arp_pkthdr *)bp;
	ND_TCHECK(*ap);

hrd = HRD(ap);
	pro = PRO(ap);
	op = OP(ap);

/* if its ATM then call the ATM ARP printer
           for Frame-relay ARP most of the fields
           are similar to Ethernet so overload the Ethernet Printer
           and set the linkaddr type for linkaddr_string(ndo, ) accordingly */

switch(hrd) {
        case ARPHRD_ATM2225:
            atmarp_print(ndo, bp, length, caplen);
            return;
        case ARPHRD_FRELAY:
            linkaddr = LINKADDR_FRELAY;
            break;
        default:
            linkaddr = LINKADDR_ETHER;
            break;
	}

if (!ND_TTEST2(*TPA(ap), PROTO_LEN(ap))) {
		ND_PRINT((ndo, "%s", tstr));
		ND_DEFAULTPRINT((const u_char *)ap, length);
		return;
	}

if (!ndo->ndo_eflag) {
            ND_PRINT((ndo, "ARP, "));
        }

/* print hardware type/len and proto type/len */
        if ((pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL) ||
	    PROTO_LEN(ap) != 4 ||
            HRD_LEN(ap) == 0 ||
            ndo->ndo_vflag) {
            ND_PRINT((ndo, "%s (len %u), %s (len %u)",
                      tok2str(arphrd_values, "Unknown Hardware (%u)", hrd),
                      HRD_LEN(ap),
                      tok2str(ethertype_values, "Unknown Protocol (0x%04x)", pro),
                      PROTO_LEN(ap)));

/* don't know know about the address formats */
            if (!ndo->ndo_vflag) {
                goto out;
            }
	}

/* print operation */
        ND_PRINT((ndo, "%s%s ",
               ndo->ndo_vflag ? ", " : "",
               tok2str(arpop_values, "Unknown (%u)", op)));

switch (op) {

case ARPOP_REQUEST:
		ND_PRINT((ndo, "who-has "));
		tpaddr_print_ip(ndo, ap, pro);
		if (isnonzero((const u_char *)THA(ap), HRD_LEN(ap)))
			ND_PRINT((ndo, " (%s)",
				  linkaddr_string(ndo, THA(ap), linkaddr, HRD_LEN(ap))));
		ND_PRINT((ndo, " tell "));
		spaddr_print_ip(ndo, ap, pro);
		break;

case ARPOP_REPLY:
		spaddr_print_ip(ndo, ap, pro);
		ND_PRINT((ndo, " is-at %s",
                          linkaddr_string(ndo, SHA(ap), linkaddr, HRD_LEN(ap))));
		break;

case ARPOP_REVREQUEST:
		ND_PRINT((ndo, "who-is %s tell %s",
			  linkaddr_string(ndo, THA(ap), linkaddr, HRD_LEN(ap)),
			  linkaddr_string(ndo, SHA(ap), linkaddr, HRD_LEN(ap))));
		break;

case ARPOP_REVREPLY:
		ND_PRINT((ndo, "%s at ",
			  linkaddr_string(ndo, THA(ap), linkaddr, HRD_LEN(ap))));
		tpaddr_print_ip(ndo, ap, pro);
		break;

case ARPOP_INVREQUEST:
		ND_PRINT((ndo, "who-is %s tell %s",
			  linkaddr_string(ndo, THA(ap), linkaddr, HRD_LEN(ap)),
			  linkaddr_string(ndo, SHA(ap), linkaddr, HRD_LEN(ap))));
		break;

case ARPOP_INVREPLY:
		ND_PRINT((ndo,"%s at ",
			  linkaddr_string(ndo, SHA(ap), linkaddr, HRD_LEN(ap))));
		spaddr_print_ip(ndo, ap, pro);
		break;

default:
		ND_DEFAULTPRINT((const u_char *)ap, caplen);
		return;
	}

out:
        ND_PRINT((ndo, ", length %u", length));

return;
trunc:
	ND_PRINT((ndo, "%s", tstr));
}

/*
 * Local Variables:
 * c-style: bsd
 * End:
 */

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