27c478bdstevel@tonic-gate * CDDL HEADER START
37c478bdstevel@tonic-gate *
47c478bdstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bdstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bdstevel@tonic-gate * (the "License").  You may not use this file except in compliance
77c478bdstevel@tonic-gate * with the License.
87c478bdstevel@tonic-gate *
97c478bdstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bdstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bdstevel@tonic-gate * See the License for the specific language governing permissions
127c478bdstevel@tonic-gate * and limitations under the License.
137c478bdstevel@tonic-gate *
147c478bdstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bdstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bdstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bdstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bdstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bdstevel@tonic-gate *
207c478bdstevel@tonic-gate * CDDL HEADER END
217c478bdstevel@tonic-gate */
237c478bdstevel@tonic-gate * Copyright 1987-1990,2002 Sun Microsystems, Inc.  All rights reserved.
247c478bdstevel@tonic-gate * Use is subject to license terms.
257c478bdstevel@tonic-gate */
277c478bdstevel@tonic-gate#pragma ident	"%Z%%M%	%I%	%E% SMI"
297c478bdstevel@tonic-gate#include <sys/types.h>
307c478bdstevel@tonic-gate#include <sys/ethernet.h>
327c478bdstevel@tonic-gate#include <netdb.h>
337c478bdstevel@tonic-gate#include <stdio.h>
347c478bdstevel@tonic-gate#include <strings.h>
377c478bdstevel@tonic-gate * Filter to convert addresses in /etc/ethers file to standard form
387c478bdstevel@tonic-gate */
417c478bdstevel@tonic-gatemain(int argc, char **argv)
437c478bdstevel@tonic-gate	/*
447c478bdstevel@tonic-gate	 * The hostname buffer must be at least as large as the line buffer
457c478bdstevel@tonic-gate	 * to avoid buffer overflows when ether_line(3SOCKET) is called.
467c478bdstevel@tonic-gate	 * We simply use the same size for both buffers to be safe.
477c478bdstevel@tonic-gate	 */
487c478bdstevel@tonic-gate	char line[MAXHOSTNAMELEN + 256], *lf, hostname[sizeof (line)];
497c478bdstevel@tonic-gate	struct ether_addr e;
507c478bdstevel@tonic-gate	FILE *in;
527c478bdstevel@tonic-gate	if (argc > 1) {
537c478bdstevel@tonic-gate		in = fopen(argv[1], "r");
547c478bdstevel@tonic-gate		if (in == NULL) {
557c478bdstevel@tonic-gate			fprintf(stderr,
567c478bdstevel@tonic-gate			    "%s: can't open %s\n", argv[0], argv[1]);
577c478bdstevel@tonic-gate			return (1);
587c478bdstevel@tonic-gate		}
597c478bdstevel@tonic-gate	} else {
607c478bdstevel@tonic-gate		in = stdin;
617c478bdstevel@tonic-gate	}
627c478bdstevel@tonic-gate	while (fgets(line, sizeof (line), in) != NULL) {
637c478bdstevel@tonic-gate		lf = strchr(line, '\n');
647c478bdstevel@tonic-gate		if (lf != NULL)
657c478bdstevel@tonic-gate			*lf = '\0';
667c478bdstevel@tonic-gate		if ((line[0] == '#') || (line[0] == '\0'))
677c478bdstevel@tonic-gate			continue;
687c478bdstevel@tonic-gate		if (ether_line(line, &e, hostname) == 0) {
697c478bdstevel@tonic-gate			(void) fprintf(stdout, "%s\t%s\n", ether_ntoa(&e),
707c478bdstevel@tonic-gate			    hostname);
717c478bdstevel@tonic-gate		} else {
727c478bdstevel@tonic-gate			(void) fprintf(stderr,
737c478bdstevel@tonic-gate			    "%s: ignoring line: %s\n", argv[0], line);
747c478bdstevel@tonic-gate		}
757c478bdstevel@tonic-gate	}
767c478bdstevel@tonic-gate	return (0);