GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/mopd/mopprobe/mopprobe.c Lines: 0 122 0.0 %
Date: 2017-11-13 Branches: 0 88 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: mopprobe.c,v 1.15 2015/02/09 23:00:14 deraadt Exp $ */
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/*
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 * Copyright (c) 1993-96 Mats O Jansson.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/*
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 * mopprobe - MOP Probe Utility
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 *
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 * Usage:	mopprobe [-3 | -4] [-aov] interface
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 */
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#include "os.h"
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#include "common/common.h"
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#include "common/mopdef.h"
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#include "common/device.h"
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#include "common/print.h"
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#include "common/get.h"
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#include "common/cmp.h"
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#include "common/pf.h"
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#include "common/nmadef.h"
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/*
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 * The list of all interfaces that are being listened to.
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 */
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struct if_info *iflist;
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void   Usage(void);
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void   mopProcess(struct if_info *, u_char *);
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struct once {
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	u_char	eaddr[6];		/* Ethernet addr */
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	struct once *next;		/* Next one */
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};
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int     AllFlag = 0;		/* listen on "all" interfaces  */
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int	Not3Flag = 0;		/* Not MOP V3 messages         */
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int	Not4Flag = 0;		/* Not MOP V4 messages         */
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int	VerboseFlag = 0;	/* Print All Announces	       */
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int     OnceFlag = 0;		/* print only once             */
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int	promisc = 1;		/* Need promisc mode           */
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extern char *__progname;
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struct once *root = NULL;
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int
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main(int argc, char *argv[])
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{
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	int     op;
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	char   *interface;
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	/* All error reporting is done through syslogs. */
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	openlog(__progname, LOG_PID | LOG_CONS, LOG_DAEMON);
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	opterr = 0;
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	while ((op = getopt(argc, argv, "34aov")) != -1) {
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		switch (op) {
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		case '3':
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			Not3Flag = 1;
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			break;
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		case '4':
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			Not4Flag = 1;
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			break;
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		case 'a':
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			AllFlag = 1;
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			break;
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		case 'o':
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			OnceFlag = 1;
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			break;
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		case 'v':
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			VerboseFlag = 1;
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			break;
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		default:
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			Usage();
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			/* NOTREACHED */
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		}
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	}
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	interface = argv[optind++];
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	if ((AllFlag && interface) ||
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	    (!AllFlag && interface == 0) ||
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	    (Not3Flag && Not4Flag))
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		Usage();
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	if (AllFlag)
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 		deviceInitAll();
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	else
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		deviceInitOne(interface);
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	Loop();
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	/* NOTREACHED */
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}
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void
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Usage()
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{
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	fprintf(stderr, "usage: %s [-3 | -4] [-aov] interface\n", __progname);
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	exit(1);
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}
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/*
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 * Process incoming packages.
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 */
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void
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mopProcess(struct if_info *ii, u_char *pkt)
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{
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	u_char	*dst, *src, mopcode, tmpc, device, ilen;
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	u_short	 ptype, moplen = 0, itype;
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	int	 idx, trans, len, i, hwa = 0;
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	struct once *o = NULL;
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	/* We don't known with transport, Guess! */
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	trans = mopGetTrans(pkt, 0);
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	/* Ok, return if we don't wan't this message */
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	if ((trans == TRANS_ETHER) && Not3Flag) return;
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	if ((trans == TRANS_8023) && Not4Flag)	return;
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	idx = 0;
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	mopGetHeader(pkt, &idx, &dst, &src, &ptype, &len, trans);
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	/* Ignore our own transmissions */
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	if (mopCmpEAddr(ii->eaddr,src) == 0)
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		return;
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	/* Just check multicast */
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	if (mopCmpEAddr(rc_mcst,dst) != 0) {
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		return;
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	}
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	switch(ptype) {
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	case MOP_K_PROTO_RC:
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		break;
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	default:
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		return;
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	}
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	if (OnceFlag) {
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		o = root;
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		while (o != NULL) {
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			if (mopCmpEAddr(o->eaddr,src) == 0)
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				return;
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			o = o->next;
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		}
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		o = (struct once *)malloc(sizeof(*o));
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		o->eaddr[0] = src[0];
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		o->eaddr[1] = src[1];
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		o->eaddr[2] = src[2];
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		o->eaddr[3] = src[3];
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		o->eaddr[4] = src[4];
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		o->eaddr[5] = src[5];
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		o->next = root;
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		root = o;
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	}
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	moplen  = mopGetLength(pkt, trans);
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	mopcode	= mopGetChar(pkt,&idx);
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	/* Just process System Information */
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	if (mopcode != MOP_K_CODE_SID) {
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		return;
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	}
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	mopGetChar(pkt,&idx);			/* Reserved */
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	mopGetShort(pkt,&idx);			/* Receipt # */
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	device = 0;
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	switch(trans) {
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	case TRANS_ETHER:
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		moplen = moplen + 16;
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		break;
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	case TRANS_8023:
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		moplen = moplen + 14;
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		break;
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	}
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	itype = mopGetShort(pkt,&idx);
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	while (idx < (int)(moplen)) {
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		ilen  = mopGetChar(pkt,&idx);
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		switch (itype) {
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		case 0:
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			tmpc  = mopGetChar(pkt,&idx);
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			idx = idx + tmpc;
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			break;
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		case MOP_K_INFO_VER:
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			idx = idx + 3;
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			break;
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		case MOP_K_INFO_MFCT:
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		case MOP_K_INFO_RTM:
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		case MOP_K_INFO_CSZ:
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		case MOP_K_INFO_RSZ:
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			idx = idx + 2;
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			break;
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		case MOP_K_INFO_HWA:
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			hwa = idx;
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			/* FALLTHROUGH */
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		case MOP_K_INFO_CNU:
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			idx = idx + 6;
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			break;
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		case MOP_K_INFO_TIME:
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			idx = idx + 10;
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			break;
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	        case MOP_K_INFO_SOFD:
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			device = mopGetChar(pkt,&idx);
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			if (VerboseFlag &&
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			    (device != NMA_C_SOFD_LCS) &&   /* DECserver 100 */
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			    (device != NMA_C_SOFD_DS2) &&   /* DECserver 200 */
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			    (device != NMA_C_SOFD_DP2) &&   /* DECserver 250 */
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			    (device != NMA_C_SOFD_DS3))     /* DECserver 300 */
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			{
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				mopPrintHWA(stdout, src);
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				fprintf(stdout," # ");
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				mopPrintDevice(stdout, device);
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				fprintf(stdout," ");
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				mopPrintHWA(stdout, &pkt[hwa]);
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				fprintf(stdout,"\n");
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			}
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			break;
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		case MOP_K_INFO_SFID:
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			tmpc = mopGetChar(pkt,&idx);
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			if ((tmpc > 0) && (tmpc < 17))
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				idx = idx + tmpc;
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			break;
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		case MOP_K_INFO_PRTY:
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			idx = idx + 1;
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			break;
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		case MOP_K_INFO_DLTY:
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			idx = idx + 1;
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			break;
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	        case MOP_K_INFO_DLBSZ:
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			idx = idx + 2;
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			break;
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		default:
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			if (((device == NMA_C_SOFD_LCS) ||  /* DECserver 100 */
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			     (device == NMA_C_SOFD_DS2) ||  /* DECserver 200 */
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			     (device == NMA_C_SOFD_DP2) ||  /* DECserver 250 */
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			     (device == NMA_C_SOFD_DS3)) && /* DECserver 300 */
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			    ((itype > 101) && (itype < 107)))
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			{
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				switch (itype) {
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				case 102:
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				case 103:
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				case 106:
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					idx = idx + ilen;
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					break;
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				case 104:
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					idx = idx + 2;
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					break;
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				case 105:
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					mopPrintHWA(stdout, src);
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					fprintf(stdout," ");
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					for (i = 0; i < ilen; i++) {
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						fprintf(stdout, "%c",pkt[idx+i]);
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					}
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					idx = idx + ilen;
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					fprintf(stdout, "\n");
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					break;
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				};
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			} else {
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				idx = idx + ilen;
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			};
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		}
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		itype = mopGetShort(pkt,&idx);
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	}
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}