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 1.21 1999-10-30 05:11:15 itojun 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
  42 #ifdef __STDC__
  43 #include <stdlib.h>
  44 #endif
  45 #include <stdio.h>
  46 #include <string.h>
  47
  48 #include "interface.h"
  49 #include "addrtoname.h"
  50 #include "ipx.h"
  51 #include "extract.h"
  52
  53
  54 static const char *ipxaddr_string(u_int32_t, const u_char *);
  55 void ipx_decode(const struct ipxHdr *, const u_char *, u_int);
  56 void ipx_sap_print(const u_short *, u_int);
  57 void ipx_rip_print(const u_short *, u_int);
  58
  59 /*
  60  * Print IPX datagram packets.
  61  */
  62 void
  63 ipx_print(const u_char *p, u_int length)
  64 {
  65         const struct ipxHdr *ipx = (const struct ipxHdr *)p;
  66
  67         TCHECK(ipx->srcSkt);
  68         (void)printf("%s.%x > ",
  69                      ipxaddr_string(EXTRACT_32BITS(ipx->srcNet), ipx->srcNode),
  70                      EXTRACT_16BITS(&ipx->srcSkt));
  71
  72         (void)printf("%s.%x:",
  73                      ipxaddr_string(EXTRACT_32BITS(ipx->dstNet), ipx->dstNode),
  74                      EXTRACT_16BITS(&ipx->dstSkt));
  75
  76         /* take length from ipx header */
  77         TCHECK(ipx->length);
  78         length = EXTRACT_16BITS(&ipx->length);
  79
  80         ipx_decode(ipx, (u_char *)ipx + ipxSize, length - ipxSize);
  81         return;
  82 trunc:
  83         printf("[|ipx %d]", length);
  84 }
  85
  86 static const char *
  87 ipxaddr_string(u_int32_t net, const u_char *node)
  88 {
  89     static char line[256];
  90
  91     sprintf(line, "%x.%02x:%02x:%02x:%02x:%02x:%02x",
  92             net, node[0], node[1], node[2], node[3], node[4], node[5]);
  93
  94     return line;
  95 }
  96
  97 void
  98 ipx_decode(const struct ipxHdr *ipx, const u_char *datap, u_int length)
  99 {
 100     register u_short dstSkt;
 101
 102     dstSkt = EXTRACT_16BITS(&ipx->dstSkt);
 103     switch (dstSkt) {
 104       case IPX_SKT_NCP:
 105         (void)printf(" ipx-ncp %d", length);
 106         break;
 107       case IPX_SKT_SAP:
 108         ipx_sap_print((u_short *)datap, length);
 109         break;
 110       case IPX_SKT_RIP:
 111         ipx_rip_print((u_short *)datap, length);
 112         break;
 113       case IPX_SKT_NETBIOS:
 114         (void)printf(" ipx-netbios %d", length);
 115         break;
 116       case IPX_SKT_DIAGNOSTICS:
 117         (void)printf(" ipx-diags %d", length);
 118         break;
 119       default:
 120         (void)printf(" ipx-#%x %d", dstSkt, length);
 121         break;
 122     }
 123 }
 124
 125 void
 126 ipx_sap_print(const u_short *ipx, u_int length)
 127 {
 128     int command, i;
 129
 130     TCHECK(ipx[0]);
 131     command = EXTRACT_16BITS(ipx);
 132     ipx++;
 133     length -= 2;
 134
 135     switch (command) {
 136       case 1:
 137       case 3:
 138         if (command == 1)
 139             (void)printf("ipx-sap-req");
 140         else
 141             (void)printf("ipx-sap-nearest-req");
 142
 143         if (length > 0) {
 144             TCHECK(ipx[1]);
 145             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 146             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 147             putchar('\'');
 148         }
 149         break;
 150
 151       case 2:
 152       case 4:
 153         if (command == 2)
 154             (void)printf("ipx-sap-resp");
 155         else
 156             (void)printf("ipx-sap-nearest-resp");
 157
 158         for (i = 0; i < 8 && length > 0; i++) {
 159             TCHECK2(ipx[27], 1);
 160             (void)printf(" %x '", EXTRACT_16BITS(&ipx[0]));
 161             fn_print((u_char *)&ipx[1], (u_char *)&ipx[1] + 48);
 162             printf("' addr %s",
 163                 ipxaddr_string(EXTRACT_32BITS(&ipx[25]), (u_char *)&ipx[27]));
 164             ipx += 32;
 165             length -= 64;
 166         }
 167         break;
 168       default:
 169             (void)printf("ipx-sap-?%x", command);
 170         break;
 171     }
 172         return;
 173 trunc:
 174         printf("[|ipx %d]", length);
 175 }
 176
 177 void
 178 ipx_rip_print(const u_short *ipx, u_int length)
 179 {
 180     int command, i;
 181
 182     TCHECK(ipx[0]);
 183     command = EXTRACT_16BITS(ipx);
 184     ipx++;
 185     length -= 2;
 186
 187     switch (command) {
 188       case 1:
 189         (void)printf("ipx-rip-req");
 190         if (length > 0) {
 191             TCHECK(ipx[3]);
 192             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 193                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 194         }
 195         break;
 196       case 2:
 197         (void)printf("ipx-rip-resp");
 198         for (i = 0; i < 50 && length > 0; i++) {
 199             TCHECK(ipx[3]);
 200             (void)printf(" %u/%d.%d", EXTRACT_32BITS(&ipx[0]),
 201                          EXTRACT_16BITS(&ipx[2]), EXTRACT_16BITS(&ipx[3]));
 202
 203             ipx += 4;
 204             length -= 8;
 205         }
 206         break;
 207       default:
 208             (void)printf("ipx-rip-?%x", command);
 209     }
 210         return;
 211 trunc:
 212         printf("[|ipx %d]", length);
 213 }
 214