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