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netgroup.c revision 1.7 
      1 /*	$NetBSD: netgroup.c,v 1.7 2012/03/20 20:34:58 matt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __RCSID("$NetBSD: netgroup.c,v 1.7 2012/03/20 20:34:58 matt Exp $");
     34 
     35 #include <stdio.h>
     36 #include <stdlib.h>
     37 #include <unistd.h>
     38 #include <netgroup.h>
     39 
     40 static void usage __P((void)) __dead;
     41 int main __P((int, char *[]));
     42 
     43 static void
     44 usage(void)
     45 {
     46 
     47 	(void)fprintf(stderr, "usage: %s [-hud] <netgroup>\n", getprogname());
     48 	exit(1);
     49 }
     50 
     51 int
     52 main(int argc, char *argv[])
     53 {
     54 	int c, i = 0;
     55 	const char *p[3];
     56 
     57 	while ((c = getopt(argc, argv, "hud")) != -1)
     58 		switch (c) {
     59 		case 'h':
     60 			i = 0;
     61 			break;
     62 		case 'u':
     63 			i = 1;
     64 			break;
     65 		case 'd':
     66 			i = 2;
     67 			break;
     68 		default:
     69 			usage();
     70 		}
     71 
     72 	if (optind >= argc)
     73 		usage();
     74 
     75 	for(; optind < argc; optind++) {
     76 		setnetgrent(argv[optind]);
     77 		while (getnetgrent(&p[0], &p[1], &p[2]))
     78 			if (p[i])
     79 				printf("%s\n", p[i]);
     80 		endnetgrent();
     81 	}
     82 	return 0;
     83 }
     84