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 1.19 1999-10-07 23:47:11 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/ip_var.h>
  38 #include <netinet/udp.h>
  39 #include <netinet/udp_var.h>
  40 #include <netinet/tcp.h>
  41 #include <netinet/tcpip.h>
  42
  43 #ifdef __STDC__
  44 #include <stdlib.h>
  45 #endif
  46 #include <stdio.h>
  47 #include <string.h>
  48
  49 #include "interface.h"
  50 #include "addrtoname.h"
  51 #include "ipx.h"
  52 #include "extract.h"
  53
  54
  55 static const char *ipxaddr_string(u_int32_t, const u_char *);
  56 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
  57 void ipx_sap_print(const u_short *, u_int);
  58 void ipx_rip_print(const u_short *, u_int);
  59
  60 /*
  61  * Print IPX datagram packets.
  62  */
  63 void
  64 ipx_print(const u_char *p, u_int length)
  65 {
  66         const struct ipxHdr *ipx = (const struct ipxHdr *)p;
  67
  68         TCHECK(ipx->srcSkt);
  69         (void)printf("%s.%x > ",
  70                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  71                      EXTRACT_16BITS(&ipx->srcSkt));
  72
  73         (void)printf("%s.%x:",
  74                      ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
  75                      EXTRACT_16BITS(&ipx->dstSkt));
  76
  77         /* take length from ipx header */
  78         TCHECK(ipx->length);
  79         length = EXTRACT_16BITS(&ipx->length);
  80
  81         ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
  82         return;
  83 trunc:
  84         printf("[|ipx %d]", length);
  85 }
  86
  87 static const char *
  88 ipxaddr_string(u_int32_t net, const u_char *node)
  89 {
  90     static char line[256];
  91
  92     sprintf(line, "%x.%02x:%02x:%02x:%02x:%02x:%02x",
  93             net, node[0], node[1], node[2], node[3], node[4], node[5]);
  94
  95     return line;
  96 }
  97
  98 void
  99 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
 100 {
 101     register u_short dstSkt;
 102
 103     dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
 104     switch (dstSkt) {
 105       case IPX_SKT_NCP:
 106         (void)printf(" ipx-ncp %d", length);
 107         break;
 108       case IPX_SKT_SAP:
 109         ipx_sap_print((u_short *)datap, length);
 110         break;
 111       case IPX_SKT_RIP:
 112         ipx_rip_print((u_short *)datap, length);
 113         break;
 114       case IPX_SKT_NETBIOS:
 115         (void)printf(" ipx-netbios %d", length);
 116         break;
 117       case IPX_SKT_DIAGNOSTICS:
 118         (void)printf(" ipx-diags %d", length);
 119         break;
 120       default:
 121         (void)printf(" ipx-#%x %d", dstSkt, length);
 122         break;
 123     }
 124 }
 125
 126 void
 127 ipx_sap_print(const u_short *ipx, u_int length)
 128 {
 129     int command, i;
 130
 131     TCHECK(ipx[0]);
 132     command = EXTRACT_16BITS(ipx);
 133     ipx++;
 134     length -= 2;
 135
 136     switch (command) {
 137       case 1:
 138       case 3:
 139         if (command == 1)
 140             (void)printf("ipx-sap-req");
 141         else
 142             (void)printf("ipx-sap-nearest-req");
 143
 144         if (length > 0) {
 145             TCHECK(ipx[1]);
 146             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 147             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 148             putchar('\'');
 149         }
 150         break;
 151
 152       case 2:
 153       case 4:
 154         if (command == 2)
 155             (void)printf("ipx-sap-resp");
 156         else
 157             (void)printf("ipx-sap-nearest-resp");
 158
 159         for (i = 0; i < 8 && length > 0; i++) {
 160             TCHECK2(ipx[27], 1);
 161             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 162             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 163             printf("' addr %s",
 164                 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
 165             ipx += 32;
 166             length -= 64;
 167         }
 168         break;
 169       default:
 170             (void)printf("ipx-sap-?%x", command);
 171         break;
 172     }
 173         return;
 174 trunc:
 175         printf("[|ipx %d]", length);
 176 }
 177
 178 void
 179 ipx_rip_print(const u_short *ipx, u_int length)
 180 {
 181     int command, i;
 182
 183     TCHECK(ipx[0]);
 184     command = EXTRACT_16BITS(ipx);
 185     ipx++;
 186     length -= 2;
 187
 188     switch (command) {
 189       case 1:
 190         (void)printf("ipx-rip-req");
 191         if (length > 0) {
 192             TCHECK(ipx[3]);
 193             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 194                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 195         }
 196         break;
 197       case 2:
 198         (void)printf("ipx-rip-resp");
 199         for (i = 0; i < 50 && length > 0; i++) {
 200             TCHECK(ipx[3]);
 201             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 202                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 203
 204             ipx += 4;
 205             length -= 8;
 206         }
 207         break;
 208       default:
 209             (void)printf("ipx-rip-?%x", command);
 210     }
 211         return;
 212 trunc:
 213         printf("[|ipx %d]", length);
 214 }
 215