print-arcnet.c revision 146773
198524Sfenner/* 298524Sfenner * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 398524Sfenner * The Regents of the University of California. All rights reserved. 498524Sfenner * 598524Sfenner * Redistribution and use in source and binary forms, with or without 698524Sfenner * modification, are permitted provided that: (1) source code distributions 798524Sfenner * retain the above copyright notice and this paragraph in its entirety, (2) 898524Sfenner * distributions including binary code include the above copyright notice and 998524Sfenner * this paragraph in its entirety in the documentation or other materials 1098524Sfenner * provided with the distribution, and (3) all advertising materials mentioning 1198524Sfenner * features or use of this software display the following acknowledgement: 1298524Sfenner * ``This product includes software developed by the University of California, 1398524Sfenner * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 1498524Sfenner * the University nor the names of its contributors may be used to endorse 1598524Sfenner * or promote products derived from this software without specific prior 1698524Sfenner * written permission. 1798524Sfenner * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 1898524Sfenner * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 1998524Sfenner * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20127668Sbms * 2198524Sfenner * From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp 2298524Sfenner */ 2398524Sfenner#ifndef lint 24127668Sbmsstatic const char rcsid[] _U_ = 25146773Ssam "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.20 2005/04/06 21:32:38 mcr Exp $ (LBL)"; 2698524Sfenner#endif 2798524Sfenner 2898524Sfenner#ifdef HAVE_CONFIG_H 2998524Sfenner#include "config.h" 3098524Sfenner#endif 3198524Sfenner 32127668Sbms#include <tcpdump-stdinc.h> 3398524Sfenner 3498524Sfenner#include <stdio.h> 3598524Sfenner#include <pcap.h> 3698524Sfenner 3798524Sfenner#include "interface.h" 3898524Sfenner#include "arcnet.h" 3998524Sfenner 40127668Sbmsstatic int arcnet_encap_print(u_char arctype, const u_char *p, 4198524Sfenner u_int length, u_int caplen); 4298524Sfenner 4398524Sfennerstruct tok arctypemap[] = { 4498524Sfenner { ARCTYPE_IP_OLD, "oldip" }, 4598524Sfenner { ARCTYPE_ARP_OLD, "oldarp" }, 4698524Sfenner { ARCTYPE_IP, "ip" }, 4798524Sfenner { ARCTYPE_ARP, "arp" }, 4898524Sfenner { ARCTYPE_REVARP, "rarp" }, 4998524Sfenner { ARCTYPE_ATALK, "atalk" }, 5098524Sfenner { ARCTYPE_BANIAN, "banyan" }, 5198524Sfenner { ARCTYPE_IPX, "ipx" }, 5298524Sfenner { ARCTYPE_INET6, "ipv6" }, 5398524Sfenner { ARCTYPE_DIAGNOSE, "diag" }, 5498524Sfenner { 0, 0 } 5598524Sfenner}; 5698524Sfenner 5798524Sfennerstatic inline void 5898524Sfennerarcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid) 5998524Sfenner{ 6098524Sfenner const struct arc_header *ap; 6198524Sfenner const char *arctypename; 6298524Sfenner 6398524Sfenner 6498524Sfenner ap = (const struct arc_header *)bp; 6598524Sfenner 6698524Sfenner 6798524Sfenner if (qflag) { 6898524Sfenner (void)printf("%02x %02x %d: ", 6998524Sfenner ap->arc_shost, 7098524Sfenner ap->arc_dhost, 7198524Sfenner length); 7298524Sfenner return; 7398524Sfenner } 7498524Sfenner 7598524Sfenner arctypename = tok2str(arctypemap, "%02x", ap->arc_type); 7698524Sfenner 7798524Sfenner if (!phds) { 7898524Sfenner (void)printf("%02x %02x %s %d: ", 7998524Sfenner ap->arc_shost, ap->arc_dhost, arctypename, 8098524Sfenner length); 8198524Sfenner return; 8298524Sfenner } 8398524Sfenner 8498524Sfenner if (flag == 0) { 8598524Sfenner (void)printf("%02x %02x %s seqid %04x %d: ", 8698524Sfenner ap->arc_shost, ap->arc_dhost, arctypename, seqid, 8798524Sfenner length); 8898524Sfenner return; 8998524Sfenner } 9098524Sfenner 9198524Sfenner if (flag & 1) 9298524Sfenner (void)printf("%02x %02x %s seqid %04x " 9398524Sfenner "(first of %d fragments) %d: ", 9498524Sfenner ap->arc_shost, ap->arc_dhost, arctypename, seqid, 9598524Sfenner (flag + 3) / 2, length); 9698524Sfenner else 9798524Sfenner (void)printf("%02x %02x %s seqid %04x " 9898524Sfenner "(fragment %d) %d: ", 9998524Sfenner ap->arc_shost, ap->arc_dhost, arctypename, seqid, 10098524Sfenner flag/2 + 1, length); 10198524Sfenner} 10298524Sfenner 10398524Sfenner/* 104127668Sbms * This is the top level routine of the printer. 'p' points 105127668Sbms * to the ARCNET header of the packet, 'h->ts' is the timestamp, 106146773Ssam * 'h->len' is the length of the packet off the wire, and 'h->caplen' 10798524Sfenner * is the number of bytes actually captured. 10898524Sfenner */ 109127668Sbmsu_int 110127668Sbmsarcnet_if_print(const struct pcap_pkthdr *h, const u_char *p) 11198524Sfenner{ 11298524Sfenner u_int caplen = h->caplen; 11398524Sfenner u_int length = h->len; 11498524Sfenner const struct arc_header *ap; 11598524Sfenner 11698524Sfenner int phds, flag = 0, archdrlen = 0; 11798524Sfenner u_int seqid = 0; 11898524Sfenner u_char arc_type; 11998524Sfenner 12098524Sfenner if (caplen < ARC_HDRLEN) { 12198524Sfenner printf("[|arcnet]"); 122127668Sbms return (caplen); 12398524Sfenner } 12498524Sfenner 12598524Sfenner ap = (const struct arc_header *)p; 12698524Sfenner arc_type = ap->arc_type; 12798524Sfenner 12898524Sfenner switch (arc_type) { 12998524Sfenner default: 13098524Sfenner phds = 1; 13198524Sfenner break; 13298524Sfenner case ARCTYPE_IP_OLD: 13398524Sfenner case ARCTYPE_ARP_OLD: 13498524Sfenner case ARCTYPE_DIAGNOSE: 13598524Sfenner phds = 0; 13698524Sfenner archdrlen = ARC_HDRLEN; 13798524Sfenner break; 13898524Sfenner } 13998524Sfenner 14098524Sfenner if (phds) { 14198524Sfenner if (caplen < ARC_HDRNEWLEN) { 14298524Sfenner arcnet_print(p, length, 0, 0, 0); 14398524Sfenner printf("[|phds]"); 144127668Sbms return (caplen); 14598524Sfenner } 14698524Sfenner 14798524Sfenner if (ap->arc_flag == 0xff) { 14898524Sfenner if (caplen < ARC_HDRNEWLEN_EXC) { 14998524Sfenner arcnet_print(p, length, 0, 0, 0); 15098524Sfenner printf("[|phds extended]"); 151127668Sbms return (caplen); 15298524Sfenner } 15398524Sfenner flag = ap->arc_flag2; 154127668Sbms seqid = ntohs(ap->arc_seqid2); 15598524Sfenner archdrlen = ARC_HDRNEWLEN_EXC; 15698524Sfenner } else { 15798524Sfenner flag = ap->arc_flag; 158127668Sbms seqid = ntohs(ap->arc_seqid); 15998524Sfenner archdrlen = ARC_HDRNEWLEN; 16098524Sfenner } 16198524Sfenner } 16298524Sfenner 16398524Sfenner 16498524Sfenner if (eflag) 16598524Sfenner arcnet_print(p, length, phds, flag, seqid); 16698524Sfenner 16798524Sfenner /* 168127668Sbms * Go past the ARCNET header. 16998524Sfenner */ 17098524Sfenner length -= archdrlen; 17198524Sfenner caplen -= archdrlen; 17298524Sfenner p += archdrlen; 17398524Sfenner 174127668Sbms if (phds && flag && (flag & 1) == 0) { 175127668Sbms /* 176127668Sbms * This is a middle fragment. 177127668Sbms */ 178127668Sbms return (archdrlen); 179127668Sbms } 18098524Sfenner 181127668Sbms if (!arcnet_encap_print(arc_type, p, length, caplen)) 18298524Sfenner default_print(p, caplen); 183127668Sbms 184127668Sbms return (archdrlen); 185127668Sbms} 186127668Sbms 187127668Sbms/* 188127668Sbms * This is the top level routine of the printer. 'p' points 189127668Sbms * to the ARCNET header of the packet, 'h->ts' is the timestamp, 190146773Ssam * 'h->len' is the length of the packet off the wire, and 'h->caplen' 191127668Sbms * is the number of bytes actually captured. It is quite similar 192127668Sbms * to the non-Linux style printer except that Linux doesn't ever 193127668Sbms * supply packets that look like exception frames, it always supplies 194127668Sbms * reassembled packets rather than raw frames, and headers have an 195127668Sbms * extra "offset" field between the src/dest and packet type. 196127668Sbms */ 197127668Sbmsu_int 198127668Sbmsarcnet_linux_if_print(const struct pcap_pkthdr *h, const u_char *p) 199127668Sbms{ 200127668Sbms u_int caplen = h->caplen; 201127668Sbms u_int length = h->len; 202127668Sbms const struct arc_linux_header *ap; 203127668Sbms 204127668Sbms int archdrlen = 0; 205127668Sbms u_char arc_type; 206127668Sbms 207127668Sbms if (caplen < ARC_LINUX_HDRLEN) { 208127668Sbms printf("[|arcnet]"); 209127668Sbms return (caplen); 21098524Sfenner } 21198524Sfenner 212127668Sbms ap = (const struct arc_linux_header *)p; 213127668Sbms arc_type = ap->arc_type; 214127668Sbms 215127668Sbms switch (arc_type) { 216127668Sbms default: 217127668Sbms archdrlen = ARC_LINUX_HDRNEWLEN; 218127668Sbms if (caplen < ARC_LINUX_HDRNEWLEN) { 219127668Sbms printf("[|arcnet]"); 220127668Sbms return (caplen); 221127668Sbms } 222127668Sbms break; 223127668Sbms case ARCTYPE_IP_OLD: 224127668Sbms case ARCTYPE_ARP_OLD: 225127668Sbms case ARCTYPE_DIAGNOSE: 226127668Sbms archdrlen = ARC_LINUX_HDRLEN; 227127668Sbms break; 228127668Sbms } 229127668Sbms 230127668Sbms if (eflag) 231127668Sbms arcnet_print(p, length, 0, 0, 0); 232127668Sbms 233127668Sbms /* 234127668Sbms * Go past the ARCNET header. 235127668Sbms */ 236127668Sbms length -= archdrlen; 237127668Sbms caplen -= archdrlen; 238127668Sbms p += archdrlen; 239127668Sbms 240127668Sbms if (!arcnet_encap_print(arc_type, p, length, caplen)) 24198524Sfenner default_print(p, caplen); 24298524Sfenner 243127668Sbms return (archdrlen); 24498524Sfenner} 24598524Sfenner 24698524Sfenner/* 24798524Sfenner * Prints the packet encapsulated in an ARCnet data field, 24898524Sfenner * given the ARCnet system code. 24998524Sfenner * 25098524Sfenner * Returns non-zero if it can do so, zero if the system code is unknown. 25198524Sfenner */ 25298524Sfenner 25398524Sfenner 254127668Sbmsstatic int 25598524Sfennerarcnet_encap_print(u_char arctype, const u_char *p, 25698524Sfenner u_int length, u_int caplen) 25798524Sfenner{ 25898524Sfenner switch (arctype) { 25998524Sfenner 26098524Sfenner case ARCTYPE_IP_OLD: 26198524Sfenner case ARCTYPE_IP: 262146773Ssam ip_print(gndo, p, length); 26398524Sfenner return (1); 26498524Sfenner 26598524Sfenner#ifdef INET6 26698524Sfenner case ARCTYPE_INET6: 26798524Sfenner ip6_print(p, length); 26898524Sfenner return (1); 26998524Sfenner#endif /*INET6*/ 27098524Sfenner 27198524Sfenner case ARCTYPE_ARP_OLD: 27298524Sfenner case ARCTYPE_ARP: 27398524Sfenner case ARCTYPE_REVARP: 274146773Ssam arp_print(gndo, p, length, caplen); 27598524Sfenner return (1); 27698524Sfenner 27798524Sfenner case ARCTYPE_ATALK: /* XXX was this ever used? */ 27898524Sfenner if (vflag) 27998524Sfenner fputs("et1 ", stdout); 28098524Sfenner atalk_print(p, length); 28198524Sfenner return (1); 28298524Sfenner 283127668Sbms case ARCTYPE_IPX: 284127668Sbms ipx_print(p, length); 285127668Sbms return (1); 286127668Sbms 28798524Sfenner default: 28898524Sfenner return (0); 28998524Sfenner } 29098524Sfenner} 291146773Ssam 292146773Ssam/* 293146773Ssam * Local Variables: 294146773Ssam * c-style: bsd 295146773Ssam * End: 296146773Ssam */ 297146773Ssam 298