103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 1988-1990 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.
|
|
*
|
|
* $Id: print-arp.c,v 1.1 1993/11/14 21:20:32 deraadt Exp $
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char rcsid[] =
|
|
"@(#) Header: print-arp.c,v 1.16 91/04/19 10:45:56 mccanne Exp (LBL)";
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/if_ether.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
|
|
void
|
|
arp_print(ap, length, caplen)
|
|
register struct ether_arp *ap;
|
|
int length;
|
|
int caplen;
|
|
{
|
|
if ((u_char *)(ap + 1) > snapend) {
|
|
printf("[|arp]");
|
|
return;
|
|
}
|
|
if (length < sizeof(struct ether_arp)) {
|
|
(void)printf("truncated-arp");
|
|
default_print((u_short *)ap, length);
|
|
return;
|
|
}
|
|
|
|
NTOHS(ap->arp_hrd);
|
|
NTOHS(ap->arp_pro);
|
|
NTOHS(ap->arp_op);
|
|
|
|
if (ap->arp_hrd != ARPHRD_ETHER
|
|
|| (ap->arp_pro != ETHERTYPE_IP
|
|
&& ap->arp_pro != ETHERTYPE_TRAIL)
|
|
|| ap->arp_hln != sizeof(SHA(ap))
|
|
|| ap->arp_pln != sizeof(SPA(ap))) {
|
|
(void)printf("arp-req #%d for proto #%d (%d) hardware %d (%d)",
|
|
ap->arp_op, ap->arp_pro, ap->arp_pln,
|
|
ap->arp_hrd, ap->arp_hln);
|
|
return;
|
|
}
|
|
if (ap->arp_pro == ETHERTYPE_TRAIL)
|
|
(void)printf("trailer");
|
|
switch (ap->arp_op) {
|
|
|
|
case ARPOP_REQUEST:
|
|
(void)printf("arp who-has %s tell %s",
|
|
ipaddr_string(TPA(ap)),
|
|
ipaddr_string(SPA(ap)));
|
|
break;
|
|
|
|
case ARPOP_REPLY:
|
|
(void)printf("arp reply %s is-at %s",
|
|
ipaddr_string(SPA(ap)),
|
|
etheraddr_string(SHA(ap)));
|
|
break;
|
|
|
|
case REVARP_REQUEST:
|
|
(void)printf("rarp who-is %s tell %s",
|
|
etheraddr_string(THA(ap)),
|
|
etheraddr_string(SHA(ap)));
|
|
break;
|
|
|
|
case REVARP_REPLY:
|
|
(void)printf("rarp reply %s at %s",
|
|
etheraddr_string(THA(ap)),
|
|
ipaddr_string(TPA(ap)));
|
|
break;
|
|
|
|
default:
|
|
(void)printf("arp-%d", ap->arp_op);
|
|
default_print((u_short *)ap, caplen);
|
|
break;
|
|
}
|
|
}
|