The Tcpdump Group git mirrors - tcpdump/blob - print-ipx.c

   1 /*
   2  * Copyright (c) 1994, 1995, 1996
   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  * Format and print Novell IPX packets.
  22  * Contributed by Brad Parker (brad@fcr.com).
  23  */
  24
  25 #ifndef lint
  26 static const char rcsid[] =
  27     "@(#) $Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.23 2000-01-17 06:24:25 itojun Exp $";
  28 #endif
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #include <sys/param.h>
  35 #include <sys/time.h>
  36 #include <sys/socket.h>
  37
  38 #include <netinet/in.h>
  39 #include <netinet/in_systm.h>
  40 #include <netinet/ip.h>
  41 #include <netinet/ip_var.h>
  42 #include <netinet/udp.h>
  43 #include <netinet/udp_var.h>
  44 #include <netinet/tcp.h>
  45
  46 #ifdef __STDC__
  47 #include <stdlib.h>
  48 #endif
  49 #include <stdio.h>
  50 #include <string.h>
  51
  52 #include "interface.h"
  53 #include "addrtoname.h"
  54 #include "ipx.h"
  55 #include "extract.h"
  56
  57
  58 static const char *ipxaddr_string(u_int32_t, const u_char *);
  59 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
  60 void ipx_sap_print(const u_short *, u_int);
  61 void ipx_rip_print(const u_short *, u_int);
  62
  63 /*
  64  * Print IPX datagram packets.
  65  */
  66 void
  67 ipx_print(const u_char *p, u_int length)
  68 {
  69         const struct ipxHdr *ipx = (const struct ipxHdr *)p;
  70
  71         TCHECK(ipx->srcSkt);
  72         (void)printf("%s.%x > ",
  73                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  74                      EXTRACT_16BITS(&ipx->srcSkt));
  75
  76         (void)printf("%s.%x:",
  77                      ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
  78                      EXTRACT_16BITS(&ipx->dstSkt));
  79
  80         /* take length from ipx header */
  81         TCHECK(ipx->length);
  82         length = EXTRACT_16BITS(&ipx->length);
  83
  84         ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
  85         return;
  86 trunc:
  87         printf("[|ipx %d]", length);
  88 }
  89
  90 static const char *
  91 ipxaddr_string(u_int32_t net, const u_char *node)
  92 {
  93     static char line[256];
  94
  95     snprintf(line, sizeof(line), "%x.%02x:%02x:%02x:%02x:%02x:%02x",
  96             net, node[0], node[1], node[2], node[3], node[4], node[5]);
  97
  98     return line;
  99 }
 100
 101 void
 102 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
 103 {
 104     register u_short dstSkt;
 105
 106     dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
 107     switch (dstSkt) {
 108       case IPX_SKT_NCP:
 109         (void)printf(" ipx-ncp %d", length);
 110         break;
 111       case IPX_SKT_SAP:
 112         ipx_sap_print((u_short *)datap, length);
 113         break;
 114       case IPX_SKT_RIP:
 115         ipx_rip_print((u_short *)datap, length);
 116         break;
 117       case IPX_SKT_NETBIOS:
 118         (void)printf(" ipx-netbios %d", length);
 119         break;
 120       case IPX_SKT_DIAGNOSTICS:
 121         (void)printf(" ipx-diags %d", length);
 122         break;
 123       default:
 124         (void)printf(" ipx-#%x %d", dstSkt, length);
 125         break;
 126     }
 127 }
 128
 129 void
 130 ipx_sap_print(const u_short *ipx, u_int length)
 131 {
 132     int command, i;
 133
 134     TCHECK(ipx[0]);
 135     command = EXTRACT_16BITS(ipx);
 136     ipx++;
 137     length -= 2;
 138
 139     switch (command) {
 140       case 1:
 141       case 3:
 142         if (command == 1)
 143             (void)printf("ipx-sap-req");
 144         else
 145             (void)printf("ipx-sap-nearest-req");
 146
 147         if (length > 0) {
 148             TCHECK(ipx[1]);
 149             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 150             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 151             putchar('\'');
 152         }
 153         break;
 154
 155       case 2:
 156       case 4:
 157         if (command == 2)
 158             (void)printf("ipx-sap-resp");
 159         else
 160             (void)printf("ipx-sap-nearest-resp");
 161
 162         for (i = 0; i < 8 && length > 0; i++) {
 163             TCHECK2(ipx[27], 1);
 164             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 165             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 166             printf("' addr %s",
 167                 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
 168             ipx += 32;
 169             length -= 64;
 170         }
 171         break;
 172       default:
 173             (void)printf("ipx-sap-?%x", command);
 174         break;
 175     }
 176         return;
 177 trunc:
 178         printf("[|ipx %d]", length);
 179 }
 180
 181 void
 182 ipx_rip_print(const u_short *ipx, u_int length)
 183 {
 184     int command, i;
 185
 186     TCHECK(ipx[0]);
 187     command = EXTRACT_16BITS(ipx);
 188     ipx++;
 189     length -= 2;
 190
 191     switch (command) {
 192       case 1:
 193         (void)printf("ipx-rip-req");
 194         if (length > 0) {
 195             TCHECK(ipx[3]);
 196             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 197                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 198         }
 199         break;
 200       case 2:
 201         (void)printf("ipx-rip-resp");
 202         for (i = 0; i < 50 && length > 0; i++) {
 203             TCHECK(ipx[3]);
 204             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 205                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 206
 207             ipx += 4;
 208             length -= 8;
 209         }
 210         break;
 211       default:
 212             (void)printf("ipx-rip-?%x", command);
 213     }
 214         return;
 215 trunc:
 216         printf("[|ipx %d]", length);
 217 }
 218