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moptrace.c revision 1.7 
      1 /*	$NetBSD: moptrace.c,v 1.7 2001/02/19 23:22:45 cgd 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  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Mats O Jansson.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __RCSID("$NetBSD: moptrace.c,v 1.7 2001/02/19 23:22:45 cgd Exp $");
     35 #endif
     36 
     37 /*
     38  * moptrace - MOP Trace Utility
     39  *
     40  * Usage:	moptrace -a [ -d ] [ -3 | -4 ]
     41  *		moptrace [ -d ] [ -3 | -4 ] interface
     42  */
     43 
     44 #include "os.h"
     45 #include "common.h"
     46 #include "device.h"
     47 #include "dl.h"
     48 #include "get.h"
     49 #include "mopdef.h"
     50 #include "pf.h"
     51 #include "print.h"
     52 #include "rc.h"
     53 
     54 /*
     55  * The list of all interfaces that are being listened to.
     56  * "selects" on the descriptors in this list.
     57  */
     58 struct if_info *iflist;
     59 
     60 void	Usage __P((void));
     61 int	main __P((int, char **));
     62 void	mopProcess __P((struct if_info *, u_char *));
     63 
     64 int     AllFlag = 0;		/* listen on "all" interfaces  */
     65 int     DebugFlag = 0;		/* print debugging messages    */
     66 int	Not3Flag = 0;		/* Ignore MOP V3 messages      */
     67 int	Not4Flag = 0;		/* Ignore MOP V4 messages      */
     68 int	promisc = 1;		/* Need promisc mode           */
     69 
     70 int
     71 main(argc, argv)
     72 	int     argc;
     73 	char  **argv;
     74 {
     75 	int     op;
     76 	char   *interface;
     77 
     78 	/* All error reporting is done through syslogs. */
     79 	openlog("moptrace", LOG_PID, LOG_DAEMON);
     80 
     81 	opterr = 0;
     82 	while ((op = getopt(argc, argv, "34ad")) != -1) {
     83 		switch (op) {
     84 		case '3':
     85 			Not3Flag++;
     86 			break;
     87 		case '4':
     88 			Not4Flag++;
     89 			break;
     90 		case 'a':
     91 			AllFlag++;
     92 			break;
     93 		case 'd':
     94 			DebugFlag++;
     95 			break;
     96 		default:
     97 			Usage();
     98 			/* NOTREACHED */
     99 		}
    100 	}
    101 
    102 	interface = argv[optind++];
    103 
    104 	if ((AllFlag && interface) ||
    105 	    (!AllFlag && interface == 0) ||
    106 	    (Not3Flag && Not4Flag))
    107 		Usage();
    108 
    109 	if (AllFlag)
    110  		deviceInitAll();
    111 	else
    112 		deviceInitOne(interface);
    113 
    114 	Loop();
    115 	/* NOTREACHED */
    116 	return (0);
    117 }
    118 
    119 void
    120 Usage()
    121 {
    122 	(void) fprintf(stderr, "usage: %s -a [ -d ] [ -3 | -4 ]\n",
    123 		       getprogname());
    124 	(void) fprintf(stderr, "       %s [ -d ] [ -3 | -4 ] interface\n",
    125 		       getprogname());
    126 	exit(1);
    127 }
    128 
    129 /*
    130  * Process incoming packages.
    131  */
    132 void
    133 mopProcess(ii, pkt)
    134 	struct if_info *ii;
    135 	u_char *pkt;
    136 {
    137 	int	 trans;
    138 
    139 	/* We don't known which transport, Guess! */
    140 
    141 	trans = mopGetTrans(pkt, 0);
    142 
    143 	/* Ok, return if we don't want this message */
    144 
    145 	if ((trans == TRANS_ETHER) && Not3Flag) return;
    146 	if ((trans == TRANS_8023) && Not4Flag)	return;
    147 
    148 	mopPrintHeader(stdout, pkt, trans);
    149 	mopPrintMopHeader(stdout, pkt, trans);
    150 
    151 	mopDumpDL(stdout, pkt, trans);
    152 	mopDumpRC(stdout, pkt, trans);
    153 
    154 	fprintf(stdout, "\n");
    155 	fflush(stdout);
    156 }
    157