tcpdump.tproj/print-rip.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1989, 1990, 1991, 1993, 1994, 1996
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that: (1) source code distributions
  30  * retain the above copyright notice and this paragraph in its entirety, (2)
  31  * distributions including binary code include the above copyright notice and
  32  * this paragraph in its entirety in the documentation or other materials
  33  * provided with the distribution, and (3) all advertising materials mentioning
  34  * features or use of this software display the following acknowledgement:
  35  * ``This product includes software developed by the University of California,
  36  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  37  * the University nor the names of its contributors may be used to endorse
  38  * or promote products derived from this software without specific prior
  39  * written permission.
  40  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  41  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  42  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  43  */
  44
  45 #ifndef lint
  46 static const char rcsid[] =
  47     "@(#) $Header: /cvs/Darwin/Commands/NeXT/network_cmds/tcpdump.tproj/print-rip.c,v 1.1.1.1 1999/05/02 03:58:34 wsanchez Exp $ (LBL)";
  48 #endif
  49
  50 #include <sys/param.h>
  51 #include <sys/time.h>
  52 #include <sys/socket.h>
  53
  54 #include <netinet/in.h>
  55 #include <netinet/in_systm.h>
  56 #include <netinet/ip.h>
  57 #include <netinet/ip_var.h>
  58 #include <netinet/udp.h>
  59 #include <netinet/udp_var.h>
  60
  61 #include <stdio.h>
  62
  63 #include "interface.h"
  64 #include "addrtoname.h"
  65 #include "extract.h"                    /* must come after interface.h */
  66
  67 struct rip {
  68         u_char rip_cmd;                 /* request/response */
  69         u_char rip_vers;                /* protocol version # */
  70         u_short rip_zero2;              /* unused */
  71 };
  72 #define RIPCMD_REQUEST          1       /* want info */
  73 #define RIPCMD_RESPONSE         2       /* responding to request */
  74 #define RIPCMD_TRACEON          3       /* turn tracing on */
  75 #define RIPCMD_TRACEOFF         4       /* turn it off */
  76 #define RIPCMD_POLL             5       /* want info from everybody */
  77 #define RIPCMD_POLLENTRY        6       /* poll for entry */
  78
  79 struct rip_netinfo {
  80         u_short rip_family;
  81         u_short rip_tag;
  82         u_int32_t rip_dest;
  83         u_int32_t rip_dest_mask;
  84         u_int32_t rip_router;
  85         u_int32_t rip_metric;           /* cost of route */
  86 };
  87
  88 static void
  89 rip_entry_print(register int vers, register const struct rip_netinfo *ni)
  90 {
  91         register u_char *cp, *ep;
  92
  93         if (EXTRACT_16BITS(&ni->rip_family) != AF_INET) {
  94
  95                 printf(" [family %d:", EXTRACT_16BITS(&ni->rip_family));
  96                 cp = (u_char *)&ni->rip_tag;
  97                 ep = (u_char *)&ni->rip_metric + sizeof(ni->rip_metric);
  98                 for (; cp < ep; cp += 2)
  99                         printf(" %04x", EXTRACT_16BITS(cp));
 100                 printf("]");
 101         } else if (vers < 2) {
 102                 /* RFC 1058 */
 103                 printf(" %s", ipaddr_string(&ni->rip_dest));
 104         } else {
 105                 /* RFC 1723 */
 106                 printf(" {%s", ipaddr_string(&ni->rip_dest));
 107                 if (ni->rip_dest_mask)
 108                         printf("/%s", ipaddr_string(&ni->rip_dest_mask));
 109                 if (ni->rip_router)
 110                         printf("->%s", ipaddr_string(&ni->rip_router));
 111                 if (ni->rip_tag)
 112                         printf(" tag %04x", EXTRACT_16BITS(&ni->rip_tag));
 113                 printf("}");
 114         }
 115         printf("(%d)", EXTRACT_32BITS(&ni->rip_metric));
 116 }
 117
 118 void
 119 rip_print(const u_char *dat, u_int length)
 120 {
 121         register const struct rip *rp;
 122         register const struct rip_netinfo *ni;
 123         register int i, j, trunc;
 124
 125         i = min(length, snapend - dat) - sizeof(*rp);
 126         if (i < 0)
 127                 return;
 128
 129         rp = (struct rip *)dat;
 130         switch (rp->rip_cmd) {
 131
 132         case RIPCMD_REQUEST:
 133                 printf(" rip-req %d", length);
 134                 break;
 135
 136         case RIPCMD_RESPONSE:
 137                 j = length / sizeof(*ni);
 138                 if (j * sizeof(*ni) != length - 4)
 139                         printf(" rip-resp %d[%d]:", j, length);
 140                 else
 141                         printf(" rip-resp %d:", j);
 142                 trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
 143                 ni = (struct rip_netinfo *)(rp + 1);
 144                 for (; (i -= sizeof(*ni)) >= 0; ++ni)
 145                         rip_entry_print(rp->rip_vers, ni);
 146                 if (trunc)
 147                         printf("[|rip]");
 148                 break;
 149
 150         case RIPCMD_TRACEON:
 151                 printf(" rip-traceon %d: \"", length);
 152                 (void)fn_print((const u_char *)(rp + 1), snapend);
 153                 fputs("\"\n", stdout);
 154                 break;
 155
 156         case RIPCMD_TRACEOFF:
 157                 printf(" rip-traceoff %d", length);
 158                 break;
 159
 160         case RIPCMD_POLL:
 161                 printf(" rip-poll %d", length);
 162                 break;
 163
 164         case RIPCMD_POLLENTRY:
 165                 printf(" rip-pollentry %d", length);
 166                 break;
 167
 168         default:
 169                 printf(" rip-#%d %d", rp->rip_cmd, length);
 170                 break;
 171         }
 172         switch (rp->rip_vers) {
 173
 174         case 1:
 175         case 2:
 176                 break;
 177
 178         default:
 179                 printf(" [vers %d]", rp->rip_vers);
 180                 break;
 181         }
 182 }