usr.bin/hesinfo/hesinfo.c

   1 /*      $NetBSD: hesinfo.c,v 1.2 2001/02/19 23:03:47 cgd Exp $  */
   2
   3 /* Copyright 1988, 1996 by the Massachusetts Institute of Technology.
   4  *
   5  * Permission to use, copy, modify, and distribute this
   6  * software and its documentation for any purpose and without
   7  * fee is hereby granted, provided that the above copyright
   8  * notice appear in all copies and that both that copyright
   9  * notice and this permission notice appear in supporting
  10  * documentation, and that the name of M.I.T. not be used in
  11  * advertising or publicity pertaining to distribution of the
  12  * software without specific, written prior permission.
  13  * M.I.T. makes no representations about the suitability of
  14  * this software for any purpose.  It is provided "as is"
  15  * without express or implied warranty.
  16  */
  17
  18 /* This file is a simple driver for the Hesiod library. */
  19
  20
  21 #include <sys/cdefs.h>
  22 #ifndef lint
  23 #if 0
  24 static char rcsid[] = "#Id: hesinfo.c,v 1.8 1996/12/08 21:29:54 ghudson Exp #";
  25 #else
  26 __RCSID("$NetBSD: hesinfo.c,v 1.2 2001/02/19 23:03:47 cgd Exp $");
  27 #endif
  28 #endif /* not lint */
  29
  30 #include <err.h>
  31 #include <errno.h>
  32 #include <hesiod.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <unistd.h>
  37
  38 int     main __P((int, char **));
  39
  40 int
  41 main(argc, argv)
  42         int     argc;
  43         char  **argv;
  44 {
  45         char  **list, **p, *bindname, *name, *type;
  46         int     lflag = 0, errflg = 0, bflag = 0, c;
  47         void   *context;
  48
  49         while ((c = getopt(argc, argv, "lb")) != -1) {
  50                 switch (c) {
  51                 case 'l':
  52                         lflag = 1;
  53                         break;
  54                 case 'b':
  55                         bflag = 1;
  56                         break;
  57                 default:
  58                         errflg++;
  59                         break;
  60                 }
  61         }
  62         if (argc - optind != 2 || errflg) {
  63                 fprintf(stderr, "usage: %s [-bl] name type\n", getprogname());
  64                 fprintf(stderr, "\t-l selects long format\n");
  65                 fprintf(stderr, "\t-b also does hes_to_bind conversion\n");
  66                 exit(2);
  67         }
  68         name = argv[optind];
  69         type = argv[optind + 1];
  70
  71         if (hesiod_init(&context) < 0) {
  72                 if (errno == ENOEXEC)
  73                         warnx(
  74                             "hesiod_init: Invalid Hesiod configuration file.");
  75                 else
  76                         warn("hesiod_init");
  77         }
  78         /* Display bind name if requested. */
  79         if (bflag) {
  80                 if (lflag)
  81                         printf("hes_to_bind(%s, %s) expands to\n", name, type);
  82                 bindname = hesiod_to_bind(context, name, type);
  83                 if (!bindname) {
  84                         if (lflag)
  85                                 printf("nothing\n");
  86                         if (errno == ENOENT)
  87                                 warnx("hesiod_to_bind: Unknown rhs-extension.");
  88                         else
  89                                 warn("hesiod_to_bind");
  90                         exit(1);
  91                 }
  92                 printf("%s\n", bindname);
  93                 free(bindname);
  94                 if (lflag)
  95                         printf("which ");
  96         }
  97         if (lflag)
  98                 printf("resolves to\n");
  99
 100         /* Do the hesiod resolve and check for errors. */
 101         list = hesiod_resolve(context, name, type);
 102         if (!list) {
 103                 if (lflag)
 104                         printf("nothing\n");
 105                 if (errno == ENOENT)
 106                         warnx("hesiod_resolve: Hesiod name not found.");
 107                 else
 108                         warn("hesiod_resolve");
 109                 exit(1);
 110         }
 111         /* Display the results. */
 112         for (p = list; *p; p++)
 113                 printf("%s\n", *p);
 114
 115         hesiod_free_list(context, list);
 116         hesiod_end(context);
 117         exit(0);
 118 }