1 /* $OpenBSD: print-atm.c,v 1.9 2009/10/27 23:59:55 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1996, 1997 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 */ 23 24 #include <sys/param.h> 25 #include <sys/time.h> 26 #include <sys/socket.h> 27 28 struct mbuf; 29 struct rtentry; 30 #include <net/if.h> 31 32 #include <netinet/in.h> 33 #include <netinet/if_ether.h> 34 #include <netinet/in_systm.h> 35 #include <netinet/ip.h> 36 #include <netinet/ip_var.h> 37 #include <netinet/udp.h> 38 #include <netinet/udp_var.h> 39 #include <netinet/tcp.h> 40 41 #include <stdio.h> 42 #include <pcap.h> 43 44 #include "interface.h" 45 #include "addrtoname.h" 46 #include "ethertype.h" 47 48 /* 49 * This is the top level routine of the printer. 'p' is the points 50 * to the LLC/SNAP header of the packet, 'tvp' is the timestamp, 51 * 'length' is the length of the packet off the wire, and 'caplen' 52 * is the number of bytes actually captured. 53 */ 54 void 55 atm_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p) 56 { 57 u_int caplen = h->caplen; 58 u_int length = h->len; 59 u_short ethertype; 60 61 ts_print(&h->ts); 62 63 if (caplen < 8) { 64 printf("[|atm]"); 65 goto out; 66 } 67 if (p[0] != 0xaa || p[1] != 0xaa || p[2] != 0x03) { 68 /*XXX assume 802.6 MAC header from fore driver */ 69 if (eflag) 70 printf("%04x%04x %04x%04x ", 71 p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3], 72 p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7], 73 p[8] << 24 | p[9] << 16 | p[10] << 8 | p[11], 74 p[12] << 24 | p[13] << 16 | p[14] << 8 | p[15]); 75 p += 20; 76 length -= 20; 77 caplen -= 20; 78 } 79 ethertype = p[6] << 8 | p[7]; 80 if (eflag) 81 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 82 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 83 p[3], p[4], p[5], /* manufacturer's code */ 84 ethertype); 85 86 /* 87 * Some printers want to get back at the ethernet addresses, 88 * and/or check that they're not walking off the end of the packet. 89 * Rather than pass them all the way down, we set these globals. 90 */ 91 packetp = p; 92 snapend = p + caplen; 93 94 length -= 8; 95 caplen -= 8; 96 p += 8; 97 98 switch (ethertype) { 99 100 case ETHERTYPE_IP: 101 ip_print(p, length); 102 break; 103 104 #ifdef INET6 105 case ETHERTYPE_IPV6: 106 ip6_print(p, length); 107 break; 108 #endif /*INET6*/ 109 110 /*XXX this probably isn't right */ 111 case ETHERTYPE_ARP: 112 case ETHERTYPE_REVARP: 113 arp_print(p, length, caplen); 114 break; 115 #ifdef notyet 116 case ETHERTYPE_DN: 117 decnet_print(p, length, caplen); 118 break; 119 120 case ETHERTYPE_ATALK: 121 if (vflag) 122 fputs("et1 ", stdout); 123 atalk_print(p, length); 124 break; 125 126 case ETHERTYPE_AARP: 127 aarp_print(p, length); 128 break; 129 130 case ETHERTYPE_LAT: 131 case ETHERTYPE_MOPRC: 132 case ETHERTYPE_MOPDL: 133 /* default_print for now */ 134 #endif 135 default: 136 /* ether_type not known, print raw packet */ 137 if (!eflag) 138 printf("%02x %02x %02x %02x-%02x-%02x %04x: ", 139 p[0], p[1], p[2], /* dsap/ssap/ctrl */ 140 p[3], p[4], p[5], /* manufacturer's code */ 141 ethertype); 142 if (!xflag && !qflag) 143 default_print(p, caplen); 144 } 145 if (xflag) 146 default_print(p, caplen); 147 out: 148 putchar('\n'); 149 } 150