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 1.20 1999-10-17 21:37:13 mcr Exp $";
  28 #endif
  29
  30 #include <sys/param.h>
  31 #include <sys/time.h>
  32 #include <sys/socket.h>
  33
  34 #include <netinet/in.h>
  35 #include <netinet/in_systm.h>
  36 #include <netinet/ip.h>
  37 #include <netinet/udp.h>
  38 #include <netinet/tcp.h>
  39
  40 #ifdef __STDC__
  41 #include <stdlib.h>
  42 #endif
  43 #include <stdio.h>
  44 #include <string.h>
  45
  46 #include "interface.h"
  47 #include "addrtoname.h"
  48 #include "ipx.h"
  49 #include "extract.h"
  50
  51
  52 static const char *ipxaddr_string(u_int32_t, const u_char *);
  53 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
  54 void ipx_sap_print(const u_short *, u_int);
  55 void ipx_rip_print(const u_short *, u_int);
  56
  57 /*
  58  * Print IPX datagram packets.
  59  */
  60 void
  61 ipx_print(const u_char *p, u_int length)
  62 {
  63         const struct ipxHdr *ipx = (const struct ipxHdr *)p;
  64
  65         TCHECK(ipx->srcSkt);
  66         (void)printf("%s.%x > ",
  67                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  68                      EXTRACT_16BITS(&ipx->srcSkt));
  69
  70         (void)printf("%s.%x:",
  71                      ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
  72                      EXTRACT_16BITS(&ipx->dstSkt));
  73
  74         /* take length from ipx header */
  75         TCHECK(ipx->length);
  76         length = EXTRACT_16BITS(&ipx->length);
  77
  78         ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
  79         return;
  80 trunc:
  81         printf("[|ipx %d]", length);
  82 }
  83
  84 static const char *
  85 ipxaddr_string(u_int32_t net, const u_char *node)
  86 {
  87     static char line[256];
  88
  89     sprintf(line, "%x.%02x:%02x:%02x:%02x:%02x:%02x",
  90             net, node[0], node[1], node[2], node[3], node[4], node[5]);
  91
  92     return line;
  93 }
  94
  95 void
  96 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
  97 {
  98     register u_short dstSkt;
  99
 100     dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
 101     switch (dstSkt) {
 102       case IPX_SKT_NCP:
 103         (void)printf(" ipx-ncp %d", length);
 104         break;
 105       case IPX_SKT_SAP:
 106         ipx_sap_print((u_short *)datap, length);
 107         break;
 108       case IPX_SKT_RIP:
 109         ipx_rip_print((u_short *)datap, length);
 110         break;
 111       case IPX_SKT_NETBIOS:
 112         (void)printf(" ipx-netbios %d", length);
 113         break;
 114       case IPX_SKT_DIAGNOSTICS:
 115         (void)printf(" ipx-diags %d", length);
 116         break;
 117       default:
 118         (void)printf(" ipx-#%x %d", dstSkt, length);
 119         break;
 120     }
 121 }
 122
 123 void
 124 ipx_sap_print(const u_short *ipx, u_int length)
 125 {
 126     int command, i;
 127
 128     TCHECK(ipx[0]);
 129     command = EXTRACT_16BITS(ipx);
 130     ipx++;
 131     length -= 2;
 132
 133     switch (command) {
 134       case 1:
 135       case 3:
 136         if (command == 1)
 137             (void)printf("ipx-sap-req");
 138         else
 139             (void)printf("ipx-sap-nearest-req");
 140
 141         if (length > 0) {
 142             TCHECK(ipx[1]);
 143             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 144             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 145             putchar('\'');
 146         }
 147         break;
 148
 149       case 2:
 150       case 4:
 151         if (command == 2)
 152             (void)printf("ipx-sap-resp");
 153         else
 154             (void)printf("ipx-sap-nearest-resp");
 155
 156         for (i = 0; i < 8 && length > 0; i++) {
 157             TCHECK2(ipx[27], 1);
 158             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 159             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 160             printf("' addr %s",
 161                 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
 162             ipx += 32;
 163             length -= 64;
 164         }
 165         break;
 166       default:
 167             (void)printf("ipx-sap-?%x", command);
 168         break;
 169     }
 170         return;
 171 trunc:
 172         printf("[|ipx %d]", length);
 173 }
 174
 175 void
 176 ipx_rip_print(const u_short *ipx, u_int length)
 177 {
 178     int command, i;
 179
 180     TCHECK(ipx[0]);
 181     command = EXTRACT_16BITS(ipx);
 182     ipx++;
 183     length -= 2;
 184
 185     switch (command) {
 186       case 1:
 187         (void)printf("ipx-rip-req");
 188         if (length > 0) {
 189             TCHECK(ipx[3]);
 190             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 191                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 192         }
 193         break;
 194       case 2:
 195         (void)printf("ipx-rip-resp");
 196         for (i = 0; i < 50 && length > 0; i++) {
 197             TCHECK(ipx[3]);
 198             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 199                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 200
 201             ipx += 4;
 202             length -= 8;
 203         }
 204         break;
 205       default:
 206             (void)printf("ipx-rip-?%x", command);
 207     }
 208         return;
 209 trunc:
 210         printf("[|ipx %d]", length);
 211 }
 212