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[] _U_ =
  27     "@(#) $Header: /tcpdump/master/tcpdump/print-ipx.c,v 1.40 2004-05-26 19:57:57 guy Exp $";
  28 #endif
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #include <tcpdump-stdinc.h>
  35
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <string.h>
  39
  40 #include "interface.h"
  41 #include "addrtoname.h"
  42 #include "ipx.h"
  43 #include "extract.h"
  44
  45
  46 static const char *ipxaddr_string(u_int32_t, const u_char *);
  47 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
  48 void ipx_sap_print(const u_short *, u_int);
  49 void ipx_rip_print(const u_short *, u_int);
  50
  51 /*
  52  * Print IPX datagram packets.
  53  */
  54 void
  55 ipx_print(const u_char *p, u_int length)
  56 {
  57         const struct ipxHdr *ipx = (const struct ipxHdr *)p;
  58
  59         if (!eflag)
  60                 printf("IPX ");
  61
  62         TCHECK(ipx->srcSkt);
  63         (void)printf("%s.%04x > ",
  64                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  65                      EXTRACT_16BITS(&ipx->srcSkt));
  66
  67         (void)printf("%s.%04x: ",
  68                      ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
  69                      EXTRACT_16BITS(&ipx->dstSkt));
  70
  71         /* take length from ipx header */
  72         TCHECK(ipx->length);
  73         length = EXTRACT_16BITS(&ipx->length);
  74
  75         ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
  76         return;
  77 trunc:
  78         printf("[|ipx %d]", length);
  79 }
  80
  81 static const char *
  82 ipxaddr_string(u_int32_t net, const u_char *node)
  83 {
  84     static char line[256];
  85
  86     snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x",
  87             net, node[0], node[1], node[2], node[3], node[4], node[5]);
  88
  89     return line;
  90 }
  91
  92 void
  93 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
  94 {
  95     register u_short dstSkt;
  96
  97     dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
  98     switch (dstSkt) {
  99       case IPX_SKT_NCP:
 100         (void)printf("ipx-ncp %d", length);
 101         break;
 102       case IPX_SKT_SAP:
 103         ipx_sap_print((u_short *)datap, length);
 104         break;
 105       case IPX_SKT_RIP:
 106         ipx_rip_print((u_short *)datap, length);
 107         break;
 108       case IPX_SKT_NETBIOS:
 109         (void)printf("ipx-netbios %d", length);
 110 #ifdef TCPDUMP_DO_SMB
 111         ipx_netbios_print(datap, length);
 112 #endif
 113         break;
 114       case IPX_SKT_DIAGNOSTICS:
 115         (void)printf("ipx-diags %d", length);
 116         break;
 117       case IPX_SKT_NWLINK_DGM:
 118         (void)printf("ipx-nwlink-dgm %d", length);
 119 #ifdef TCPDUMP_DO_SMB
 120         ipx_netbios_print(datap, length);
 121 #endif
 122         break;
 123       case IPX_SKT_EIGRP:
 124         eigrp_print(datap, length);
 125         break;
 126       default:
 127         (void)printf("ipx-#%x %d", dstSkt, length);
 128         break;
 129     }
 130 }
 131
 132 void
 133 ipx_sap_print(const u_short *ipx, u_int length)
 134 {
 135     int command, i;
 136
 137     TCHECK(ipx[0]);
 138     command = EXTRACT_16BITS(ipx);
 139     ipx++;
 140     length -= 2;
 141
 142     switch (command) {
 143       case 1:
 144       case 3:
 145         if (command == 1)
 146             (void)printf("ipx-sap-req");
 147         else
 148             (void)printf("ipx-sap-nearest-req");
 149
 150         TCHECK(ipx[0]);
 151         (void)printf(" %s", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
 152         break;
 153
 154       case 2:
 155       case 4:
 156         if (command == 2)
 157             (void)printf("ipx-sap-resp");
 158         else
 159             (void)printf("ipx-sap-nearest-resp");
 160
 161         for (i = 0; i < 8 && length > 0; i++) {
 162             TCHECK2(ipx[25], 10);
 163             (void)printf(" %s '", ipxsap_string(htons(EXTRACT_16BITS(&ipx[0]))));
 164             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 165             printf("' addr %s",
 166                 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
 167             ipx += 32;
 168             length -= 64;
 169         }
 170         break;
 171       default:
 172         (void)printf("ipx-sap-?%x", command);
 173         break;
 174     }
 175     return;
 176 trunc:
 177     printf("[|ipx %d]", length);
 178 }
 179
 180 void
 181 ipx_rip_print(const u_short *ipx, u_int length)
 182 {
 183     int command, i;
 184
 185     TCHECK(ipx[0]);
 186     command = EXTRACT_16BITS(ipx);
 187     ipx++;
 188     length -= 2;
 189
 190     switch (command) {
 191       case 1:
 192         (void)printf("ipx-rip-req");
 193         if (length > 0) {
 194             TCHECK(ipx[3]);
 195             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 196                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 197         }
 198         break;
 199       case 2:
 200         (void)printf("ipx-rip-resp");
 201         for (i = 0; i < 50 && length > 0; i++) {
 202             TCHECK(ipx[3]);
 203             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 204                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 205
 206             ipx += 4;
 207             length -= 8;
 208         }
 209         break;
 210       default:
 211         (void)printf("ipx-rip-?%x", command);
 212         break;
 213     }
 214     return;
 215 trunc:
 216     printf("[|ipx %d]", length);
 217 }