usr.sbin/mopd/moptrace/moptrace.c

   1 /*      $NetBSD: moptrace.c,v 1.9 2003/04/20 00:20:29 christos Exp $    */
   2
   3 /*
   4  * Copyright (c) 1993-95 Mats O Jansson.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 #ifndef lint
  29 __RCSID("$NetBSD: moptrace.c,v 1.9 2003/04/20 00:20:29 christos Exp $");
  30 #endif
  31
  32 /*
  33  * moptrace - MOP Trace Utility
  34  *
  35  * Usage:       moptrace -a [ -d ] [ -3 | -4 ]
  36  *              moptrace [ -d ] [ -3 | -4 ] interface
  37  */
  38
  39 #include "os.h"
  40 #include "common.h"
  41 #include "device.h"
  42 #include "dl.h"
  43 #include "get.h"
  44 #include "mopdef.h"
  45 #include "pf.h"
  46 #include "print.h"
  47 #include "rc.h"
  48 #include "log.h"
  49
  50 /*
  51  * The list of all interfaces that are being listened to.
  52  * "selects" on the descriptors in this list.
  53  */
  54 struct if_info *iflist;
  55
  56 void    Usage __P((void));
  57 int     main __P((int, char **));
  58 void    mopProcess __P((struct if_info *, u_char *));
  59
  60 int     AllFlag = 0;            /* listen on "all" interfaces  */
  61 int     DebugFlag = 0;          /* print debugging messages    */
  62 int     Not3Flag = 0;           /* Ignore MOP V3 messages      */
  63 int     Not4Flag = 0;           /* Ignore MOP V4 messages      */
  64 int     promisc = 1;            /* Need promisc mode           */
  65
  66 int
  67 main(argc, argv)
  68         int     argc;
  69         char  **argv;
  70 {
  71         int     op;
  72         char   *interface;
  73
  74         mopInteractive = 1;
  75         opterr = 0;
  76         while ((op = getopt(argc, argv, "34ad")) != -1) {
  77                 switch (op) {
  78                 case '3':
  79                         Not3Flag++;
  80                         break;
  81                 case '4':
  82                         Not4Flag++;
  83                         break;
  84                 case 'a':
  85                         AllFlag++;
  86                         break;
  87                 case 'd':
  88                         DebugFlag++;
  89                         break;
  90                 default:
  91                         Usage();
  92                         /* NOTREACHED */
  93                 }
  94         }
  95
  96         interface = argv[optind++];
  97
  98         if ((AllFlag && interface) ||
  99             (!AllFlag && interface == 0) ||
 100             (Not3Flag && Not4Flag))
 101                 Usage();
 102
 103         if (AllFlag)
 104                 deviceInitAll();
 105         else
 106                 deviceInitOne(interface);
 107
 108         Loop();
 109         /* NOTREACHED */
 110         return (0);
 111 }
 112
 113 void
 114 Usage()
 115 {
 116         (void) fprintf(stderr, "usage: %s -a [ -d ] [ -3 | -4 ]\n",
 117                        getprogname());
 118         (void) fprintf(stderr, "       %s [ -d ] [ -3 | -4 ] interface\n",
 119                        getprogname());
 120         exit(1);
 121 }
 122
 123 /*
 124  * Process incoming packages.
 125  */
 126 void
 127 mopProcess(ii, pkt)
 128         struct if_info *ii;
 129         u_char *pkt;
 130 {
 131         int      trans;
 132
 133         /* We don't known which transport, Guess! */
 134
 135         trans = mopGetTrans(pkt, 0);
 136
 137         /* Ok, return if we don't want this message */
 138
 139         if ((trans == TRANS_ETHER) && Not3Flag) return;
 140         if ((trans == TRANS_8023) && Not4Flag)  return;
 141
 142         mopPrintHeader(stdout, pkt, trans);
 143         mopPrintMopHeader(stdout, pkt, trans);
 144
 145         mopDumpDL(stdout, pkt, trans);
 146         mopDumpRC(stdout, pkt, trans);
 147
 148         fprintf(stdout, "\n");
 149         fflush(stdout);
 150 }