00cef679df
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will only support Ethernet. Tcpdump itself should be ok, but libpcap needs lot of work. For the detailed change history, look at the commit log entries for the is-newarp branch.
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/* $NetBSD: print-arp.c,v 1.3 1997/03/15 18:37:44 is Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994
|
|
* 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 char rcsid[] =
|
|
"@(#) Header: print-arp.c,v 1.28 94/06/14 20:17:36 leres Exp (LBL)";
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <net/if.h>
|
|
|
|
#include <netinet/in.h>
|
|
#ifdef __NetBSD__
|
|
#include <net/if_arp.h>
|
|
#include <net/if_ether.h>
|
|
#include <netinet/if_inarp.h>
|
|
#else
|
|
#include <netinet/if_ether.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
|
|
static u_char ezero[6];
|
|
|
|
void
|
|
arp_print(register const u_char *bp, int length, int caplen)
|
|
{
|
|
register const APTYPE *ap;
|
|
register const struct ether_header *eh;
|
|
const u_char *p;
|
|
int pro, hrd, op;
|
|
|
|
ap = (APTYPE *)bp;
|
|
if ((u_char *)(ap + 1) > snapend) {
|
|
printf("[|arp]");
|
|
return;
|
|
}
|
|
if (length < sizeof(struct arphdr)) {
|
|
(void)printf("truncated-arp");
|
|
default_print((u_char *)ap, length);
|
|
return;
|
|
}
|
|
/*
|
|
* Don't assume alignment.
|
|
*/
|
|
p = (u_char*)&PRO(ap);
|
|
pro = (p[0] << 8) | p[1];
|
|
p = (u_char*)&HRD(ap);
|
|
hrd = (p[0] << 8) | p[1];
|
|
p = (u_char*)&OP(ap);
|
|
op = (p[0] << 8) | p[1];
|
|
|
|
if ((pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL)
|
|
#ifndef __NetBSD__
|
|
|| ap->arp_hln != sizeof(SHA(ap))
|
|
|| ap->arp_pln != sizeof(SPA(ap))
|
|
#endif
|
|
) {
|
|
(void)printf("arp-#%d for proto #%d (%d) hardware #%d (%d)",
|
|
op, pro, PLN(ap), hrd, HLN(ap));
|
|
return;
|
|
}
|
|
if (pro == ETHERTYPE_TRAIL)
|
|
(void)printf("trailer-");
|
|
eh = (struct ether_header *)packetp;
|
|
switch (op) {
|
|
|
|
case ARPOP_REQUEST:
|
|
(void)printf("arp who-has %s", ipaddr_string(TPA(ap)));
|
|
if (bcmp((char *)ezero, (char *)THA(ap), HLN(ap)) != 0)
|
|
(void)printf(" (%s)",
|
|
linkaddr_string(THA(ap), HLN(ap)));
|
|
(void)printf(" tell %s", ipaddr_string(SPA(ap)));
|
|
|
|
#ifndef __NetBSD__
|
|
if (bcmp((char *)ESRC(eh), (char *)SHA(ap), 6) != 0)
|
|
(void)printf(" (%s)", etheraddr_string(SHA(ap)));
|
|
#endif
|
|
break;
|
|
|
|
case ARPOP_REPLY:
|
|
(void)printf("arp reply %s", ipaddr_string(SPA(ap)));
|
|
|
|
#ifndef __NetBSD__
|
|
if (bcmp((char *)ESRC(eh), (char *)SHA(ap), 6) != 0)
|
|
(void)printf(" (%s)", etheraddr_string(SHA(ap)));
|
|
#endif
|
|
|
|
(void)printf(" is-at %s", linkaddr_string(SHA(ap), HLN(ap)));
|
|
|
|
#ifndef __NetBSD__
|
|
if (bcmp((char *)EDST(eh), (char *)THA(ap), 6) != 0)
|
|
(void)printf(" (%s)", etheraddr_string(THA(ap)));
|
|
#endif
|
|
break;
|
|
|
|
case REVARP_REQUEST:
|
|
(void)printf("rarp who-is %s tell %s",
|
|
linkaddr_string(THA(ap), HLN(ap)),
|
|
linkaddr_string(SHA(ap), HLN(ap)));
|
|
break;
|
|
|
|
case REVARP_REPLY:
|
|
(void)printf("rarp reply %s at %s",
|
|
linkaddr_string(THA(ap), HLN(ap)),
|
|
ipaddr_string(TPA(ap)));
|
|
break;
|
|
|
|
default:
|
|
(void)printf("arp-#%d", op);
|
|
default_print((u_char *)ap, caplen);
|
|
return;
|
|
}
|
|
if (hrd != ARPHRD_ETHER)
|
|
printf(" hardware #%d", HRD(ap));
|
|
}
|