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 #include <stdio.h> 28 #include <sys/types.h> 29 #include <sys/socket.h> 30 #include <net/if.h> 31 #include <net/if_arp.h> 32 #include <netinet/in_systm.h> 33 #include <netinet/in.h> 34 #include <netinet/if_ether.h> 35 36 #include <at.h> 37 #include <snoop.h> 38 39 static char *printat(uint8_t *); 40 41 static char *aarp_opname[] = { 42 "", 43 "AARP Request", 44 "AARP Reply", 45 "AARP Probe", 46 }; 47 48 void 49 interpret_aarp(int flags, char *data, int alen) 50 { 51 /* LINTED */ 52 struct ether_arp *ap = (struct ether_arp *)data; 53 54 extern char *dst_name; 55 56 if (flags & F_SUM) { 57 if (alen < sizeof (struct ether_arp)) { 58 (void) snprintf(get_sum_line(), MAXLINE, 59 "AARP (short packet)"); 60 return; 61 } 62 63 switch (ntohs(ap->arp_op)) { 64 case AARP_REQ: 65 (void) snprintf(get_sum_line(), MAXLINE, 66 "AARP C Who is %s ?", 67 printat(ap->arp_tpa)); 68 break; 69 case AARP_RESP: 70 (void) snprintf(get_sum_line(), MAXLINE, 71 "AARP R %s is %s", 72 printat(ap->arp_spa), 73 printether((struct ether_addr *)&ap->arp_sha)); 74 dst_name = printat(ap->arp_tpa); 75 break; 76 case AARP_PROBE: 77 (void) snprintf(get_sum_line(), MAXLINE, 78 "AARP Probe %s ?", 79 printat(ap->arp_tpa)); 80 break; 81 } 82 } 83 84 if (flags & F_DTAIL) { 85 show_header("AARP: ", "AARP Frame", alen); 86 show_space(); 87 88 if (alen < sizeof (struct ether_arp)) { 89 (void) snprintf(get_line(0, 0), get_line_remain(), 90 "AARP (short packet)"); 91 return; 92 } 93 94 (void) snprintf(get_line(0, 0), get_line_remain(), 95 "Hardware type = %d", 96 ntohs(ap->arp_hrd)); 97 (void) snprintf(get_line(0, 0), get_line_remain(), 98 "Protocol type = %04X (%s)", 99 ntohs(ap->arp_pro), 100 print_ethertype(ntohs(ap->arp_pro))); 101 (void) snprintf(get_line(0, 0), get_line_remain(), 102 "Length of hardware address = %d bytes", 103 ap->arp_hln); 104 (void) snprintf(get_line(0, 0), get_line_remain(), 105 "Length of protocol address = %d bytes", 106 ap->arp_pln); 107 (void) snprintf(get_line(0, 0), get_line_remain(), 108 "Opcode %d (%s)", 109 ntohs(ap->arp_op), 110 aarp_opname[ntohs(ap->arp_op)]); 111 112 if (ntohs(ap->arp_hrd) == ARPHRD_ETHER && 113 ntohs(ap->arp_pro) == ETHERTYPE_AT) { 114 (void) snprintf(get_line(0, 0), get_line_remain(), 115 "Sender's hardware address = %s", 116 printether((struct ether_addr *)&ap->arp_sha)); 117 (void) snprintf(get_line(0, 0), get_line_remain(), 118 "Sender's protocol address = %s", 119 printat(ap->arp_spa)); 120 (void) snprintf(get_line(0, 0), get_line_remain(), 121 "Target hardware address = %s", 122 (ntohs(ap->arp_op) == AARP_REQ || 123 ntohs(ap->arp_op) == AARP_PROBE) ? "?" : 124 printether((struct ether_addr *)&ap->arp_tha)); 125 (void) snprintf(get_line(0, 0), get_line_remain(), 126 "Target protocol address = %s", 127 ntohs(ap->arp_op) == REVARP_REQUEST ? "?" : 128 printat(ap->arp_tpa)); 129 } 130 show_trailer(); 131 } 132 } 133 134 static char * 135 printat(uint8_t *p) 136 { 137 static char buf[16]; 138 139 (void) snprintf(buf, sizeof (buf), "%d.%d", get_short(&p[1]), p[3]); 140 return (buf); 141 } 142