dist/tcpdump/print-ipx.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 1994, 1995, 1996
   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  * Format and print Novell IPX packets.
  24  * Contributed by Brad Parker (brad@fcr.com).
  25  */
  26
  27 #include <sys/cdefs.h>
  28 #ifndef lint
  29 #if 0
  30 static const char rcsid[] _U_ =
  31     "@(#) Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.40.2.2 2005/05/06 08:27:00 guy Exp";
  32 #else
  33 __RCSID("$NetBSD: tcpdump2rcsid.ex,v 1.1 2001/06/25 20:09:58 itojun Exp $");
  34 #endif
  35 #endif
  36
  37 #ifdef HAVE_CONFIG_H
  38 #include "config.h"
  39 #endif
  40
  41 #include <tcpdump-stdinc.h>
  42
  43 #include <stdlib.h>
  44 #include <stdio.h>
  45 #include <string.h>
  46
  47 #include "interface.h"
  48 #include "addrtoname.h"
  49 #include "ipx.h"
  50 #include "extract.h"
  51
  52
  53 static const char *ipxaddr_string(u_int32_t, const u_char *);
  54 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
  55 void ipx_sap_print(const u_short *, u_int);
  56 void ipx_rip_print(const u_short *, u_int);
  57
  58 /*
  59  * Print IPX datagram packets.
  60  */
  61 void
  62 ipx_print(const u_char *p, u_int length)
  63 {
  64         const struct ipxHdr *ipx = (const struct ipxHdr *)p;
  65
  66         if (!eflag)
  67                 printf("IPX ");
  68
  69         TCHECK(ipx->srcSkt);
  70         (void)printf("%s.%04x > ",
  71                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  72                      EXTRACT_16BITS(&ipx->srcSkt));
  73
  74         (void)printf("%s.%04x: ",
  75                      ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
  76                      EXTRACT_16BITS(&ipx->dstSkt));
  77
  78         /* take length from ipx header */
  79         TCHECK(ipx->length);
  80         length = EXTRACT_16BITS(&ipx->length);
  81
  82         ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
  83         return;
  84 trunc:
  85         printf("[|ipx %d]", length);
  86 }
  87
  88 static const char *
  89 ipxaddr_string(u_int32_t net, const u_char *node)
  90 {
  91     static char line[256];
  92
  93     snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x",
  94             net, node[0], node[1], node[2], node[3], node[4], node[5]);
  95
  96     return line;
  97 }
  98
  99 void
 100 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
 101 {
 102     register u_short dstSkt;
 103
 104     dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
 105     switch (dstSkt) {
 106       case IPX_SKT_NCP:
 107         (void)printf("ipx-ncp %d", length);
 108         break;
 109       case IPX_SKT_SAP:
 110         ipx_sap_print((u_short *)datap, length);
 111         break;
 112       case IPX_SKT_RIP:
 113         ipx_rip_print((u_short *)datap, length);
 114         break;
 115       case IPX_SKT_NETBIOS:
 116         (void)printf("ipx-netbios %d", length);
 117 #ifdef TCPDUMP_DO_SMB
 118         ipx_netbios_print(datap, length);
 119 #endif
 120         break;
 121       case IPX_SKT_DIAGNOSTICS:
 122         (void)printf("ipx-diags %d", length);
 123         break;
 124       case IPX_SKT_NWLINK_DGM:
 125         (void)printf("ipx-nwlink-dgm %d", length);
 126 #ifdef TCPDUMP_DO_SMB
 127         ipx_netbios_print(datap, length);
 128 #endif
 129         break;
 130       case IPX_SKT_EIGRP:
 131         eigrp_print(datap, length);
 132         break;
 133       default:
 134         (void)printf("ipx-#%x %d", dstSkt, length);
 135         break;
 136     }
 137 }
 138
 139 void
 140 ipx_sap_print(const u_short *ipx, u_int length)
 141 {
 142     int command, i;
 143
 144     TCHECK(ipx[0]);
 145     command = EXTRACT_16BITS(ipx);
 146     ipx++;
 147     length -= 2;
 148
 149     switch (command) {
 150       case 1:
 151       case 3:
 152         if (command == 1)
 153             (void)printf("ipx-sap-req");
 154         else
 155             (void)printf("ipx-sap-nearest-req");
 156
 157         TCHECK(ipx[0]);
 158         (void)printf(" %s", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
 159         break;
 160
 161       case 2:
 162       case 4:
 163         if (command == 2)
 164             (void)printf("ipx-sap-resp");
 165         else
 166             (void)printf("ipx-sap-nearest-resp");
 167
 168         for (i = 0; i < 8 && length > 0; i++) {
 169             TCHECK(ipx[0]);
 170             (void)printf(" %s '", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
 171             if (fn_printzp((u_char *)&ipx[1], 48, snapend)) {
 172                 printf("'");
 173                 goto trunc;
 174             }
 175             TCHECK2(ipx[25], 10);
 176             printf("' addr %s",
 177                 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
 178             ipx += 32;
 179             length -= 64;
 180         }
 181         break;
 182       default:
 183         (void)printf("ipx-sap-?%x", command);
 184         break;
 185     }
 186     return;
 187 trunc:
 188     printf("[|ipx %d]", length);
 189 }
 190
 191 void
 192 ipx_rip_print(const u_short *ipx, u_int length)
 193 {
 194     int command, i;
 195
 196     TCHECK(ipx[0]);
 197     command = EXTRACT_16BITS(ipx);
 198     ipx++;
 199     length -= 2;
 200
 201     switch (command) {
 202       case 1:
 203         (void)printf("ipx-rip-req");
 204         if (length > 0) {
 205             TCHECK(ipx[3]);
 206             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 207                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 208         }
 209         break;
 210       case 2:
 211         (void)printf("ipx-rip-resp");
 212         for (i = 0; i < 50 && length > 0; i++) {
 213             TCHECK(ipx[3]);
 214             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 215                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 216
 217             ipx += 4;
 218             length -= 8;
 219         }
 220         break;
 221       default:
 222         (void)printf("ipx-rip-?%x", command);
 223         break;
 224     }
 225     return;
 226 trunc:
 227     printf("[|ipx %d]", length);
 228 }