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/*
* 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.
*
* From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.6.4.1 2002/06/01 23:51:11 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <pcap.h>
#include "interface.h"
#include "arcnet.h"
int arcnet_encap_print(u_char arctype, const u_char *p,
u_int length, u_int caplen);
struct tok arctypemap[] = {
{ ARCTYPE_IP_OLD, "oldip" },
{ ARCTYPE_ARP_OLD, "oldarp" },
{ ARCTYPE_IP, "ip" },
{ ARCTYPE_ARP, "arp" },
{ ARCTYPE_REVARP, "rarp" },
{ ARCTYPE_ATALK, "atalk" },
{ ARCTYPE_BANIAN, "banyan" },
{ ARCTYPE_IPX, "ipx" },
{ ARCTYPE_INET6, "ipv6" },
{ ARCTYPE_DIAGNOSE, "diag" },
{ 0, 0 }
};
static inline void
arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid)
{
const struct arc_header *ap;
const char *arctypename;
ap = (const struct arc_header *)bp;
if (qflag) {
(void)printf("%02x %02x %d: ",
ap->arc_shost,
ap->arc_dhost,
length);
return;
}
arctypename = tok2str(arctypemap, "%02x", ap->arc_type);
if (!phds) {
(void)printf("%02x %02x %s %d: ",
ap->arc_shost, ap->arc_dhost, arctypename,
length);
return;
}
if (flag == 0) {
(void)printf("%02x %02x %s seqid %04x %d: ",
ap->arc_shost, ap->arc_dhost, arctypename, seqid,
length);
return;
}
if (flag & 1)
(void)printf("%02x %02x %s seqid %04x "
"(first of %d fragments) %d: ",
ap->arc_shost, ap->arc_dhost, arctypename, seqid,
(flag + 3) / 2, length);
else
(void)printf("%02x %02x %s seqid %04x "
"(fragment %d) %d: ",
ap->arc_shost, ap->arc_dhost, arctypename, seqid,
flag/2 + 1, length);
}
/*
* This is the top level routine of the printer. 'p' is the points
* to the ether header of the packet, 'tvp' is the timestamp,
* 'length' is the length of the packet off the wire, and 'caplen'
* is the number of bytes actually captured.
*/
void
arcnet_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
{
u_int caplen = h->caplen;
u_int length = h->len;
const struct arc_header *ap;
int phds, flag = 0, archdrlen = 0;
u_int seqid = 0;
u_char arc_type;
++infodelay;
ts_print(&h->ts);
if (caplen < ARC_HDRLEN) {
printf("[|arcnet]");
goto out;
}
ap = (const struct arc_header *)p;
arc_type = ap->arc_type;
switch (arc_type) {
default:
phds = 1;
break;
case ARCTYPE_IP_OLD:
case ARCTYPE_ARP_OLD:
case ARCTYPE_DIAGNOSE:
phds = 0;
archdrlen = ARC_HDRLEN;
break;
}
if (phds) {
if (caplen < ARC_HDRNEWLEN) {
arcnet_print(p, length, 0, 0, 0);
printf("[|phds]");
goto out;
}
if (ap->arc_flag == 0xff) {
if (caplen < ARC_HDRNEWLEN_EXC) {
arcnet_print(p, length, 0, 0, 0);
printf("[|phds extended]");
goto out;
}
flag = ap->arc_flag2;
seqid = ap->arc_seqid2;
archdrlen = ARC_HDRNEWLEN_EXC;
} else {
flag = ap->arc_flag;
seqid = ap->arc_seqid;
archdrlen = ARC_HDRNEWLEN;
}
}
if (eflag)
arcnet_print(p, length, phds, flag, seqid);
/*
* Some printers want to get back at the ethernet addresses,
* and/or check that they're not walking off the end of the packet.
* Rather than pass them all the way down, we set these globals.
*/
packetp = p;
snapend = p + caplen;
length -= archdrlen;
caplen -= archdrlen;
p += archdrlen;
if (phds && flag && (flag & 1) == 0)
goto out2;
if (!arcnet_encap_print(arc_type, p, length, caplen)) {
default_print(p, caplen);
goto out;
}
out2:
if (xflag)
default_print(p, caplen);
out:
putchar('\n');
--infodelay;
if (infoprint)
info(0);
}
/*
* Prints the packet encapsulated in an ARCnet data field,
* given the ARCnet system code.
*
* Returns non-zero if it can do so, zero if the system code is unknown.
*/
int
arcnet_encap_print(u_char arctype, const u_char *p,
u_int length, u_int caplen)
{
switch (arctype) {
case ARCTYPE_IP_OLD:
case ARCTYPE_IP:
ip_print(p, length);
return (1);
#ifdef INET6
case ARCTYPE_INET6:
ip6_print(p, length);
return (1);
#endif /*INET6*/
case ARCTYPE_ARP_OLD:
case ARCTYPE_ARP:
case ARCTYPE_REVARP:
arp_print(p, length, caplen);
return (1);
case ARCTYPE_ATALK: /* XXX was this ever used? */
if (vflag)
fputs("et1 ", stdout);
atalk_print(p, length);
return (1);
default:
return (0);
}
}
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