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 1.24 2000-07-01 03:39:05 assar 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 #include <stdlib.h>
  47 #include <stdio.h>
  48 #include <string.h>
  49
  50 #include "interface.h"
  51 #include "addrtoname.h"
  52 #include "ipx.h"
  53 #include "extract.h"
  54
  55
  56 static const char *ipxaddr_string(u_int32_t, const u_char *);
  57 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
  58 void ipx_sap_print(const u_short *, u_int);
  59 void ipx_rip_print(const u_short *, u_int);
  60
  61 /*
  62  * Print IPX datagram packets.
  63  */
  64 void
  65 ipx_print(const u_char *p, u_int length)
  66 {
  67         const struct ipxHdr *ipx = (const struct ipxHdr *)p;
  68
  69         TCHECK(ipx->srcSkt);
  70         (void)printf("%s.%x > ",
  71                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  72                      EXTRACT_16BITS(&ipx->srcSkt));
  73
  74         (void)printf("%s.%x:",
  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), "%x.%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         break;
 118       case IPX_SKT_DIAGNOSTICS:
 119         (void)printf(" ipx-diags %d", length);
 120         break;
 121       default:
 122         (void)printf(" ipx-#%x %d", dstSkt, length);
 123         break;
 124     }
 125 }
 126
 127 void
 128 ipx_sap_print(const u_short *ipx, u_int length)
 129 {
 130     int command, i;
 131
 132     TCHECK(ipx[0]);
 133     command = EXTRACT_16BITS(ipx);
 134     ipx++;
 135     length -= 2;
 136
 137     switch (command) {
 138       case 1:
 139       case 3:
 140         if (command == 1)
 141             (void)printf("ipx-sap-req");
 142         else
 143             (void)printf("ipx-sap-nearest-req");
 144
 145         if (length > 0) {
 146             TCHECK(ipx[1]);
 147             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 148             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 149             putchar('\'');
 150         }
 151         break;
 152
 153       case 2:
 154       case 4:
 155         if (command == 2)
 156             (void)printf("ipx-sap-resp");
 157         else
 158             (void)printf("ipx-sap-nearest-resp");
 159
 160         for (i = 0; i < 8 && length > 0; i++) {
 161             TCHECK2(ipx[27], 1);
 162             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 163             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 164             printf("' addr %s",
 165                 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
 166             ipx += 32;
 167             length -= 64;
 168         }
 169         break;
 170       default:
 171             (void)printf("ipx-sap-?%x", command);
 172         break;
 173     }
 174         return;
 175 trunc:
 176         printf("[|ipx %d]", length);
 177 }
 178
 179 void
 180 ipx_rip_print(const u_short *ipx, u_int length)
 181 {
 182     int command, i;
 183
 184     TCHECK(ipx[0]);
 185     command = EXTRACT_16BITS(ipx);
 186     ipx++;
 187     length -= 2;
 188
 189     switch (command) {
 190       case 1:
 191         (void)printf("ipx-rip-req");
 192         if (length > 0) {
 193             TCHECK(ipx[3]);
 194             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 195                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 196         }
 197         break;
 198       case 2:
 199         (void)printf("ipx-rip-resp");
 200         for (i = 0; i < 50 && length > 0; i++) {
 201             TCHECK(ipx[3]);
 202             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 203                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 204
 205             ipx += 4;
 206             length -= 8;
 207         }
 208         break;
 209       default:
 210             (void)printf("ipx-rip-?%x", command);
 211     }
 212         return;
 213 trunc:
 214         printf("[|ipx %d]", length);
 215 }
 216