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moptrace.c revision 1.2 
      1 /*	$NetBSD: moptrace.c,v 1.2 1997/03/25 03:08:02 thorpej 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 #ifndef LINT
     33 static char rcsid[] = "$NetBSD: moptrace.c,v 1.2 1997/03/25 03:08:02 thorpej Exp $";
     34 #endif
     35 
     36 /*
     37  * moptrace - MOP Trace Utility
     38  *
     39  * Usage:	moptrace -a [ -d ] [ -3 | -4 ]
     40  *		moptrace [ -d ] [ -3 | -4 ] interface
     41  */
     42 
     43 #include "os.h"
     44 #include "common/common.h"
     45 #include "common/mopdef.h"
     46 #include "common/device.h"
     47 #include "common/print.h"
     48 #include "common/pf.h"
     49 #include "common/dl.h"
     50 #include "common/rc.h"
     51 #include "common/get.h"
     52 
     53 /*
     54  * The list of all interfaces that are being listened to.
     55  * "selects" on the descriptors in this list.
     56  */
     57 struct if_info *iflist;
     58 
     59 #ifdef NO__P
     60 void   Loop	     (/* void */);
     61 void   Usage         (/* void */);
     62 void   mopProcess    (/* struct if_info *, u_char * */);
     63 #else
     64 void   Loop	     __P((void));
     65 void   Usage         __P((void));
     66 void   mopProcess    __P((struct if_info *, u_char *));
     67 #endif
     68 
     69 int     AllFlag = 0;		/* listen on "all" interfaces  */
     70 int     DebugFlag = 0;		/* print debugging messages    */
     71 int	Not3Flag = 0;		/* Ignore MOP V3 messages      */
     72 int	Not4Flag = 0;		/* Ignore MOP V4 messages      */
     73 int	promisc = 1;		/* Need promisc mode           */
     74 char	*Program;
     75 
     76 void
     77 main(argc, argv)
     78 	int     argc;
     79 	char  **argv;
     80 {
     81 	int     op;
     82 	char   *interface;
     83 
     84 	extern int optind, opterr;
     85 
     86 	if ((Program = strrchr(argv[0], '/')))
     87 		Program++;
     88 	else
     89 		Program = argv[0];
     90 
     91 	if (*Program == '-')
     92 		Program++;
     93 
     94 	/* All error reporting is done through syslogs. */
     95 	openlog(Program, LOG_PID | LOG_CONS, LOG_DAEMON);
     96 
     97 	opterr = 0;
     98 	while ((op = getopt(argc, argv, "34ad")) != EOF) {
     99 		switch (op) {
    100 		case '3':
    101 			Not3Flag++;
    102 			break;
    103 		case '4':
    104 			Not4Flag++;
    105 			break;
    106 		case 'a':
    107 			AllFlag++;
    108 			break;
    109 		case 'd':
    110 			DebugFlag++;
    111 			break;
    112 		default:
    113 			Usage();
    114 			/* NOTREACHED */
    115 		}
    116 	}
    117 
    118 	interface = argv[optind++];
    119 
    120 	if ((AllFlag && interface) ||
    121 	    (!AllFlag && interface == 0) ||
    122 	    (Not3Flag && Not4Flag))
    123 		Usage();
    124 
    125 	if (AllFlag)
    126  		deviceInitAll();
    127 	else
    128 		deviceInitOne(interface);
    129 
    130 	Loop();
    131 }
    132 
    133 void
    134 Usage()
    135 {
    136 	(void) fprintf(stderr, "usage: %s -a [ -d ] [ -3 | -4 ]\n",Program);
    137 	(void) fprintf(stderr, "       %s [ -d ] [ -3 | -4 ] interface\n",
    138 		       Program);
    139 	exit(1);
    140 }
    141 
    142 /*
    143  * Process incoming packages.
    144  */
    145 void
    146 mopProcess(ii, pkt)
    147 	struct if_info *ii;
    148 	u_char *pkt;
    149 {
    150 	int	 trans;
    151 
    152 	/* We don't known which transport, Guess! */
    153 
    154 	trans = mopGetTrans(pkt, 0);
    155 
    156 	/* Ok, return if we don't want this message */
    157 
    158 	if ((trans == TRANS_ETHER) && Not3Flag) return;
    159 	if ((trans == TRANS_8023) && Not4Flag)	return;
    160 
    161 	mopPrintHeader(stdout, pkt, trans);
    162 	mopPrintMopHeader(stdout, pkt, trans);
    163 
    164 	mopDumpDL(stdout, pkt, trans);
    165 	mopDumpRC(stdout, pkt, trans);
    166 
    167 	fprintf(stdout, "\n");
    168 	fflush(stdout);
    169 }
    170 
    171 
    172