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      1  0  stevel /*
      2  0  stevel  * CDDL HEADER START
      3  0  stevel  *
      4  0  stevel  * The contents of this file are subject to the terms of the
      5  0  stevel  * Common Development and Distribution License, Version 1.0 only
      6  0  stevel  * (the "License").  You may not use this file except in compliance
      7  0  stevel  * with the License.
      8  0  stevel  *
      9  0  stevel  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  0  stevel  * or http://www.opensolaris.org/os/licensing.
     11  0  stevel  * See the License for the specific language governing permissions
     12  0  stevel  * and limitations under the License.
     13  0  stevel  *
     14  0  stevel  * When distributing Covered Code, include this CDDL HEADER in each
     15  0  stevel  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  0  stevel  * If applicable, add the following below this CDDL HEADER, with the
     17  0  stevel  * fields enclosed by brackets "[]" replaced with your own identifying
     18  0  stevel  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  0  stevel  *
     20  0  stevel  * CDDL HEADER END
     21  0  stevel  */
     22  0  stevel /*
     23  0  stevel  * Copyright (c) 1991-2001 by Sun Microsystems, Inc.
     24  0  stevel  * All rights reserved.
     25  0  stevel  */
     26  0  stevel 
     27  0  stevel #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28  0  stevel 
     29  0  stevel #include <stdio.h>
     30  0  stevel #include <sys/types.h>
     31  0  stevel #include <sys/socket.h>
     32  0  stevel #include <net/if.h>
     33  0  stevel #include <net/if_arp.h>
     34  0  stevel #include <netinet/in_systm.h>
     35  0  stevel #include <netinet/in.h>
     36  0  stevel #include <netinet/if_ether.h>
     37  0  stevel 
     38  0  stevel #include <at.h>
     39  0  stevel #include <snoop.h>
     40  0  stevel 
     41  0  stevel static char *printat(uint8_t *);
     42  0  stevel 
     43  0  stevel static char *aarp_opname[] = {
     44  0  stevel 	"",
     45  0  stevel 	"AARP Request",
     46  0  stevel 	"AARP Reply",
     47  0  stevel 	"AARP Probe",
     48  0  stevel };
     49  0  stevel 
     50  0  stevel void
     51  0  stevel interpret_aarp(int flags, char *data, int alen)
     52  0  stevel {
     53  0  stevel 	/* LINTED */
     54  0  stevel 	struct ether_arp *ap = (struct ether_arp *)data;
     55  0  stevel 
     56  0  stevel 	extern char *dst_name;
     57  0  stevel 
     58  0  stevel 	if (flags & F_SUM) {
     59  0  stevel 		if (alen < sizeof (struct ether_arp)) {
     60  0  stevel 			(void) snprintf(get_sum_line(), MAXLINE,
     61  0  stevel 			    "AARP (short packet)");
     62  0  stevel 			return;
     63  0  stevel 		}
     64  0  stevel 
     65  0  stevel 		switch (ntohs(ap->arp_op)) {
     66  0  stevel 		case AARP_REQ:
     67  0  stevel 			(void) snprintf(get_sum_line(), MAXLINE,
     68  0  stevel 			    "AARP C Who is %s ?",
     69  0  stevel 			    printat(ap->arp_tpa));
     70  0  stevel 			break;
     71  0  stevel 		case AARP_RESP:
     72  0  stevel 			(void) snprintf(get_sum_line(), MAXLINE,
     73  0  stevel 			    "AARP R %s is %s",
     74  0  stevel 			    printat(ap->arp_spa),
     75  0  stevel 			    printether((struct ether_addr *)&ap->arp_sha));
     76  0  stevel 			dst_name = printat(ap->arp_tpa);
     77  0  stevel 			break;
     78  0  stevel 		case AARP_PROBE:
     79  0  stevel 			(void) snprintf(get_sum_line(), MAXLINE,
     80  0  stevel 			    "AARP Probe %s ?",
     81  0  stevel 			    printat(ap->arp_tpa));
     82  0  stevel 			break;
     83  0  stevel 		}
     84  0  stevel 	}
     85  0  stevel 
     86  0  stevel 	if (flags & F_DTAIL) {
     87  0  stevel 		show_header("AARP: ", "AARP Frame", alen);
     88  0  stevel 		show_space();
     89  0  stevel 
     90  0  stevel 		if (alen < sizeof (struct ether_arp)) {
     91  0  stevel 			(void) snprintf(get_line(0, 0), get_line_remain(),
     92  0  stevel 			    "AARP (short packet)");
     93  0  stevel 			return;
     94  0  stevel 		}
     95  0  stevel 
     96  0  stevel 		(void) snprintf(get_line(0, 0), get_line_remain(),
     97  0  stevel 		    "Hardware type = %d",
     98  0  stevel 		    ntohs(ap->arp_hrd));
     99  0  stevel 		(void) snprintf(get_line(0, 0), get_line_remain(),
    100  0  stevel 		    "Protocol type = %04X (%s)",
    101  0  stevel 		    ntohs(ap->arp_pro),
    102  0  stevel 		    print_ethertype(ntohs(ap->arp_pro)));
    103  0  stevel 		(void) snprintf(get_line(0, 0), get_line_remain(),
    104  0  stevel 		    "Length of hardware address = %d bytes",
    105  0  stevel 		    ap->arp_hln);
    106  0  stevel 		(void) snprintf(get_line(0, 0), get_line_remain(),
    107  0  stevel 		    "Length of protocol address = %d bytes",
    108  0  stevel 		    ap->arp_pln);
    109  0  stevel 		(void) snprintf(get_line(0, 0), get_line_remain(),
    110  0  stevel 		    "Opcode %d (%s)",
    111  0  stevel 		    ntohs(ap->arp_op),
    112  0  stevel 		    aarp_opname[ntohs(ap->arp_op)]);
    113  0  stevel 
    114  0  stevel 		if (ntohs(ap->arp_hrd) == ARPHRD_ETHER &&
    115  0  stevel 		    ntohs(ap->arp_pro) == ETHERTYPE_AT) {
    116  0  stevel 			(void) snprintf(get_line(0, 0), get_line_remain(),
    117  0  stevel 			    "Sender's hardware address = %s",
    118  0  stevel 			    printether((struct ether_addr *)&ap->arp_sha));
    119  0  stevel 			(void) snprintf(get_line(0, 0), get_line_remain(),
    120  0  stevel 			    "Sender's protocol address = %s",
    121  0  stevel 			    printat(ap->arp_spa));
    122  0  stevel 			(void) snprintf(get_line(0, 0), get_line_remain(),
    123  0  stevel 			    "Target hardware address = %s",
    124  0  stevel 			    (ntohs(ap->arp_op) == AARP_REQ ||
    125  0  stevel 				ntohs(ap->arp_op) == AARP_PROBE) ? "?" :
    126  0  stevel 			    printether((struct ether_addr *)&ap->arp_tha));
    127  0  stevel 			(void) snprintf(get_line(0, 0), get_line_remain(),
    128  0  stevel 			    "Target protocol address = %s",
    129  0  stevel 			    ntohs(ap->arp_op) == REVARP_REQUEST ? "?" :
    130  0  stevel 			    printat(ap->arp_tpa));
    131  0  stevel 		}
    132  0  stevel 		show_trailer();
    133  0  stevel 	}
    134  0  stevel }
    135  0  stevel 
    136  0  stevel static char *
    137  0  stevel printat(uint8_t *p)
    138  0  stevel {
    139  0  stevel 	static char buf[16];
    140  0  stevel 
    141  0  stevel 	(void) snprintf(buf, sizeof (buf),  "%d.%d", get_short(&p[1]), p[3]);
    142  0  stevel 	return (buf);
    143  0  stevel }
    144