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      1 /*	$NetBSD: hesinfo.c,v 1.5 2016/09/05 00:40:28 sevan 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 1.5 2016/09/05 00:40:28 sevan 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
     39 main(int argc, char **argv)
     40 {
     41 	char  **list, **p, *bindname, *name, *type;
     42 	int     lflag = 0, errflg = 0, bflag = 0, c;
     43 	void   *context;
     44 
     45 	while ((c = getopt(argc, argv, "lb")) != -1) {
     46 		switch (c) {
     47 		case 'l':
     48 			lflag = 1;
     49 			break;
     50 		case 'b':
     51 			bflag = 1;
     52 			break;
     53 		default:
     54 			errflg++;
     55 			break;
     56 		}
     57 	}
     58 	if (argc - optind != 2 || errflg) {
     59 		fprintf(stderr, "usage: %s [-bl] name type\n", getprogname());
     60 		fprintf(stderr, "\t-l selects long format\n");
     61 		fprintf(stderr, "\t-b also does hes_to_bind conversion\n");
     62 		exit(2);
     63 	}
     64 	name = argv[optind];
     65 	type = argv[optind + 1];
     66 
     67 	if (hesiod_init(&context) < 0) {
     68 		if (errno == ENOEXEC)
     69 			warnx(
     70 			    "hesiod_init: Invalid Hesiod configuration file.");
     71 		else
     72 			warn("hesiod_init");
     73 	}
     74 	/* Display bind name if requested. */
     75 	if (bflag) {
     76 		if (lflag)
     77 			printf("hes_to_bind(%s, %s) expands to\n", name, type);
     78 		bindname = hesiod_to_bind(context, name, type);
     79 		if (!bindname) {
     80 			if (lflag)
     81 				printf("nothing\n");
     82 			if (errno == ENOENT)
     83 				warnx("hesiod_to_bind: Unknown rhs-extension.");
     84 			else
     85 				warn("hesiod_to_bind");
     86 			exit(1);
     87 		}
     88 		printf("%s\n", bindname);
     89 		free(bindname);
     90 		if (lflag)
     91 			printf("which ");
     92 	}
     93 	if (lflag)
     94 		printf("resolves to\n");
     95 
     96 	/* Do the hesiod resolve and check for errors. */
     97 	list = hesiod_resolve(context, name, type);
     98 	if (!list) {
     99 		if (lflag)
    100 			printf("nothing\n");
    101 		if (errno == ENOENT)
    102 			warnx("hesiod_resolve: Hesiod name not found.");
    103 		else
    104 			warn("hesiod_resolve");
    105 		exit(1);
    106 	}
    107 	/* Display the results. */
    108 	for (p = list; *p; p++)
    109 		printf("%s\n", *p);
    110 
    111 	hesiod_free_list(context, list);
    112 	hesiod_end(context);
    113 	exit(0);
    114 }
    115