1 /*	$OpenBSD: getrrsetbyname.c,v 1.2 2018/12/15 15:16:12 eric Exp $	*/
2 /*
3  * Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #include <sys/types.h>
19 
20 #include <netinet/in.h>
21 #include <arpa/nameser.h>
22 
23 #include <err.h>
24 #include <errno.h>
25 #include <getopt.h>
26 #include <resolv.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 
31 #include "common.h"
32 
33 static void
34 usage(void)
35 {
36 	extern const char * __progname;
37 
38 	fprintf(stderr, "usage: %s [-e] [-t type] [host...]\n",
39 	    __progname);
40 	exit(1);
41 }
42 
43 int
44 main(int argc, char *argv[])
45 {
46 	int			ch, i;
47 	uint16_t		type = T_A;
48 	char			*host;
49 	struct rrsetinfo	*rrset;
50 
51 	while((ch = getopt(argc, argv, "R:et:")) !=  -1) {
52 		switch(ch) {
53 		case 'R':
54 			parseresopt(optarg);
55 			break;
56 		case 'e':
57 			long_err += 1;
58 			break;
59 		case 't':
60 			if ((type = strtotype(optarg)) == 0)
61 				usage();
62 			break;
63 		default:
64 			usage();
65 			/* NOTREACHED */
66 		}
67 	}
68 	argc -= optind;
69 	argv += optind;
70 
71 	for (i = 0; i < argc; i++) {
72 
73 		if (i)
74 			printf("\n");
75 		printf("===> \"%s\"\n", argv[i]);
76 		host = gethostarg(argv[i]);
77 
78 		errno = 0;
79 		h_errno = 0;
80 		gai_errno = 0;
81 		rrset_errno = 0;
82 
83 		rrset_errno = getrrsetbyname(host, C_IN, type, 0, &rrset);
84 
85 		if (rrset_errno == 0)
86 			print_rrsetinfo(rrset);
87 		print_errors();
88 	}
89 
90 	return (0);
91 }
92