usr.bin/netgroup/netgroup.c

   1 /*      $NetBSD: netgroup.c,v 1.5 2007/12/15 19:44:52 perry 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 1.5 2007/12/15 19:44:52 perry 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()
  45 {
  46
  47         (void)fprintf(stderr, "usage: %s [-hud] <netgroup>\n", getprogname());
  48         exit(1);
  49 }
  50
  51 int
  52 main(argc, argv)
  53         int argc;
  54         char *argv[];
  55 {
  56         int c, i = 0;
  57         const char *p[3];
  58
  59         while ((c = getopt(argc, argv, "hud")) != -1)
  60                 switch (c) {
  61                 case 'h':
  62                         i = 0;
  63                         break;
  64                 case 'u':
  65                         i = 1;
  66                         break;
  67                 case 'd':
  68                         i = 2;
  69                         break;
  70                 default:
  71                         usage();
  72                 }
  73
  74         if (optind >= argc)
  75                 usage();
  76
  77         for(; optind < argc; optind++) {
  78                 setnetgrent(argv[optind]);
  79                 while (getnetgrent(&p[0], &p[1], &p[2]))
  80                         if (p[i])
  81                                 printf("%s\n", p[i]);
  82                 endnetgrent();
  83         }
  84         return 0;
  85 }