The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that: (1) source code distributions |
| 7 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| 8 | * distributions including binary code include the above copyright notice and |
| 9 | * this paragraph in its entirety in the documentation or other materials |
| 10 | * provided with the distribution, and (3) all advertising materials mentioning |
| 11 | * features or use of this software display the following acknowledgement: |
| 12 | * ``This product includes software developed by the University of California, |
| 13 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| 14 | * the University nor the names of its contributors may be used to endorse |
| 15 | * or promote products derived from this software without specific prior |
| 16 | * written permission. |
| 17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 20 | * |
| 21 | * From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp |
| 22 | */ |
| 23 | #ifndef lint |
| 24 | static const char rcsid[] _U_ = |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 25 | "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.20 2005-04-06 21:32:38 mcr Exp $ (LBL)"; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 26 | #endif |
| 27 | |
| 28 | #ifdef HAVE_CONFIG_H |
| 29 | #include "config.h" |
| 30 | #endif |
| 31 | |
| 32 | #include <tcpdump-stdinc.h> |
| 33 | |
| 34 | #include <stdio.h> |
| 35 | #include <pcap.h> |
| 36 | |
| 37 | #include "interface.h" |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 38 | #include "extract.h" |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 39 | #include "arcnet.h" |
| 40 | |
| 41 | static int arcnet_encap_print(u_char arctype, const u_char *p, |
| 42 | u_int length, u_int caplen); |
| 43 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 44 | static const struct tok arctypemap[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 45 | { ARCTYPE_IP_OLD, "oldip" }, |
| 46 | { ARCTYPE_ARP_OLD, "oldarp" }, |
| 47 | { ARCTYPE_IP, "ip" }, |
| 48 | { ARCTYPE_ARP, "arp" }, |
| 49 | { ARCTYPE_REVARP, "rarp" }, |
| 50 | { ARCTYPE_ATALK, "atalk" }, |
| 51 | { ARCTYPE_BANIAN, "banyan" }, |
| 52 | { ARCTYPE_IPX, "ipx" }, |
| 53 | { ARCTYPE_INET6, "ipv6" }, |
| 54 | { ARCTYPE_DIAGNOSE, "diag" }, |
| 55 | { 0, 0 } |
| 56 | }; |
| 57 | |
| 58 | static inline void |
| 59 | arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid) |
| 60 | { |
| 61 | const struct arc_header *ap; |
| 62 | const char *arctypename; |
| 63 | |
| 64 | |
| 65 | ap = (const struct arc_header *)bp; |
| 66 | |
| 67 | |
| 68 | if (qflag) { |
| 69 | (void)printf("%02x %02x %d: ", |
| 70 | ap->arc_shost, |
| 71 | ap->arc_dhost, |
| 72 | length); |
| 73 | return; |
| 74 | } |
| 75 | |
| 76 | arctypename = tok2str(arctypemap, "%02x", ap->arc_type); |
| 77 | |
| 78 | if (!phds) { |
| 79 | (void)printf("%02x %02x %s %d: ", |
| 80 | ap->arc_shost, ap->arc_dhost, arctypename, |
| 81 | length); |
| 82 | return; |
| 83 | } |
| 84 | |
| 85 | if (flag == 0) { |
| 86 | (void)printf("%02x %02x %s seqid %04x %d: ", |
| 87 | ap->arc_shost, ap->arc_dhost, arctypename, seqid, |
| 88 | length); |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | if (flag & 1) |
| 93 | (void)printf("%02x %02x %s seqid %04x " |
| 94 | "(first of %d fragments) %d: ", |
| 95 | ap->arc_shost, ap->arc_dhost, arctypename, seqid, |
| 96 | (flag + 3) / 2, length); |
| 97 | else |
| 98 | (void)printf("%02x %02x %s seqid %04x " |
| 99 | "(fragment %d) %d: ", |
| 100 | ap->arc_shost, ap->arc_dhost, arctypename, seqid, |
| 101 | flag/2 + 1, length); |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * This is the top level routine of the printer. 'p' points |
| 106 | * to the ARCNET header of the packet, 'h->ts' is the timestamp, |
| 107 | * 'h->len' is the length of the packet off the wire, and 'h->caplen' |
| 108 | * is the number of bytes actually captured. |
| 109 | */ |
| 110 | u_int |
| 111 | arcnet_if_print(const struct pcap_pkthdr *h, const u_char *p) |
| 112 | { |
| 113 | u_int caplen = h->caplen; |
| 114 | u_int length = h->len; |
| 115 | const struct arc_header *ap; |
| 116 | |
| 117 | int phds, flag = 0, archdrlen = 0; |
| 118 | u_int seqid = 0; |
| 119 | u_char arc_type; |
| 120 | |
| 121 | if (caplen < ARC_HDRLEN) { |
| 122 | printf("[|arcnet]"); |
| 123 | return (caplen); |
| 124 | } |
| 125 | |
| 126 | ap = (const struct arc_header *)p; |
| 127 | arc_type = ap->arc_type; |
| 128 | |
| 129 | switch (arc_type) { |
| 130 | default: |
| 131 | phds = 1; |
| 132 | break; |
| 133 | case ARCTYPE_IP_OLD: |
| 134 | case ARCTYPE_ARP_OLD: |
| 135 | case ARCTYPE_DIAGNOSE: |
| 136 | phds = 0; |
| 137 | archdrlen = ARC_HDRLEN; |
| 138 | break; |
| 139 | } |
| 140 | |
| 141 | if (phds) { |
| 142 | if (caplen < ARC_HDRNEWLEN) { |
| 143 | arcnet_print(p, length, 0, 0, 0); |
| 144 | printf("[|phds]"); |
| 145 | return (caplen); |
| 146 | } |
| 147 | |
| 148 | if (ap->arc_flag == 0xff) { |
| 149 | if (caplen < ARC_HDRNEWLEN_EXC) { |
| 150 | arcnet_print(p, length, 0, 0, 0); |
| 151 | printf("[|phds extended]"); |
| 152 | return (caplen); |
| 153 | } |
| 154 | flag = ap->arc_flag2; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 155 | seqid = EXTRACT_16BITS(&ap->arc_seqid2); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 156 | archdrlen = ARC_HDRNEWLEN_EXC; |
| 157 | } else { |
| 158 | flag = ap->arc_flag; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 159 | seqid = EXTRACT_16BITS(&ap->arc_seqid); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 160 | archdrlen = ARC_HDRNEWLEN; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | |
| 165 | if (eflag) |
| 166 | arcnet_print(p, length, phds, flag, seqid); |
| 167 | |
| 168 | /* |
| 169 | * Go past the ARCNET header. |
| 170 | */ |
| 171 | length -= archdrlen; |
| 172 | caplen -= archdrlen; |
| 173 | p += archdrlen; |
| 174 | |
| 175 | if (phds && flag && (flag & 1) == 0) { |
| 176 | /* |
| 177 | * This is a middle fragment. |
| 178 | */ |
| 179 | return (archdrlen); |
| 180 | } |
| 181 | |
| 182 | if (!arcnet_encap_print(arc_type, p, length, caplen)) |
| 183 | default_print(p, caplen); |
| 184 | |
| 185 | return (archdrlen); |
| 186 | } |
| 187 | |
| 188 | /* |
| 189 | * This is the top level routine of the printer. 'p' points |
| 190 | * to the ARCNET header of the packet, 'h->ts' is the timestamp, |
| 191 | * 'h->len' is the length of the packet off the wire, and 'h->caplen' |
| 192 | * is the number of bytes actually captured. It is quite similar |
| 193 | * to the non-Linux style printer except that Linux doesn't ever |
| 194 | * supply packets that look like exception frames, it always supplies |
| 195 | * reassembled packets rather than raw frames, and headers have an |
| 196 | * extra "offset" field between the src/dest and packet type. |
| 197 | */ |
| 198 | u_int |
| 199 | arcnet_linux_if_print(const struct pcap_pkthdr *h, const u_char *p) |
| 200 | { |
| 201 | u_int caplen = h->caplen; |
| 202 | u_int length = h->len; |
| 203 | const struct arc_linux_header *ap; |
| 204 | |
| 205 | int archdrlen = 0; |
| 206 | u_char arc_type; |
| 207 | |
| 208 | if (caplen < ARC_LINUX_HDRLEN) { |
| 209 | printf("[|arcnet]"); |
| 210 | return (caplen); |
| 211 | } |
| 212 | |
| 213 | ap = (const struct arc_linux_header *)p; |
| 214 | arc_type = ap->arc_type; |
| 215 | |
| 216 | switch (arc_type) { |
| 217 | default: |
| 218 | archdrlen = ARC_LINUX_HDRNEWLEN; |
| 219 | if (caplen < ARC_LINUX_HDRNEWLEN) { |
| 220 | printf("[|arcnet]"); |
| 221 | return (caplen); |
| 222 | } |
| 223 | break; |
| 224 | case ARCTYPE_IP_OLD: |
| 225 | case ARCTYPE_ARP_OLD: |
| 226 | case ARCTYPE_DIAGNOSE: |
| 227 | archdrlen = ARC_LINUX_HDRLEN; |
| 228 | break; |
| 229 | } |
| 230 | |
| 231 | if (eflag) |
| 232 | arcnet_print(p, length, 0, 0, 0); |
| 233 | |
| 234 | /* |
| 235 | * Go past the ARCNET header. |
| 236 | */ |
| 237 | length -= archdrlen; |
| 238 | caplen -= archdrlen; |
| 239 | p += archdrlen; |
| 240 | |
| 241 | if (!arcnet_encap_print(arc_type, p, length, caplen)) |
| 242 | default_print(p, caplen); |
| 243 | |
| 244 | return (archdrlen); |
| 245 | } |
| 246 | |
| 247 | /* |
| 248 | * Prints the packet encapsulated in an ARCnet data field, |
| 249 | * given the ARCnet system code. |
| 250 | * |
| 251 | * Returns non-zero if it can do so, zero if the system code is unknown. |
| 252 | */ |
| 253 | |
| 254 | |
| 255 | static int |
| 256 | arcnet_encap_print(u_char arctype, const u_char *p, |
| 257 | u_int length, u_int caplen) |
| 258 | { |
| 259 | switch (arctype) { |
| 260 | |
| 261 | case ARCTYPE_IP_OLD: |
| 262 | case ARCTYPE_IP: |
| 263 | ip_print(gndo, p, length); |
| 264 | return (1); |
| 265 | |
| 266 | #ifdef INET6 |
| 267 | case ARCTYPE_INET6: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 268 | ip6_print(gndo, p, length); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 269 | return (1); |
| 270 | #endif /*INET6*/ |
| 271 | |
| 272 | case ARCTYPE_ARP_OLD: |
| 273 | case ARCTYPE_ARP: |
| 274 | case ARCTYPE_REVARP: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 275 | arp_print(gndo, p, length, caplen); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 276 | return (1); |
| 277 | |
| 278 | case ARCTYPE_ATALK: /* XXX was this ever used? */ |
| 279 | if (vflag) |
| 280 | fputs("et1 ", stdout); |
| 281 | atalk_print(p, length); |
| 282 | return (1); |
| 283 | |
| 284 | case ARCTYPE_IPX: |
| 285 | ipx_print(p, length); |
| 286 | return (1); |
| 287 | |
| 288 | default: |
| 289 | return (0); |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | /* |
| 294 | * Local Variables: |
| 295 | * c-style: bsd |
| 296 | * End: |
| 297 | */ |
| 298 | |