1 /* $NetBSD: h_hostent.c,v 1.2 2014/01/09 02:18:10 christos Exp $ */
4 * Copyright (c) 2013 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: h_hostent.c,v 1.2 2014/01/09 02:18:10 christos Exp $");
43 #include <netinet/in.h>
44 #include <sys/types.h>
45 #include <arpa/nameser.h>
46 #include <arpa/inet.h>
50 extern const char *__res_conf_name;
53 phostent(const struct hostent *h)
57 const int af = h->h_length == NS_INADDRSZ ? AF_INET : AF_INET6;
59 printf("name=%s, length=%d, addrtype=%d, aliases=[",
60 h->h_name, h->h_length, h->h_addrtype);
62 for (i = 0; h->h_aliases[i]; i++)
63 printf("%s%s", i == 0 ? "" : " ", h->h_aliases[i]);
65 printf("] addr_list=[");
67 for (i = 0; h->h_addr_list[i]; i++)
68 printf("%s%s", i == 0 ? "" : " ", inet_ntop(af,
69 h->h_addr_list[i], buf, (socklen_t)sizeof(buf)));
77 (void)fprintf(stderr, "Usage: %s [-f <hostsfile>] "
78 "[-t <any|dns|nis|files>] "
79 "[-46a] <name|address>\n", getprogname());
84 getby(int (*f)(void *, void *, va_list), struct getnamaddr *info, ...)
90 e = (*f)(info, NULL, ap);
97 printf("error %d\n", e);
103 geta(struct hostent *hp) {
105 printf("error %d\n", h_errno);
111 main(int argc, char *argv[])
113 int (*f)(void *, void *, va_list) = NULL;
114 const char *type = "any";
115 int c, af, e, byaddr, len;
117 struct getnamaddr info;
125 info.buflen = sizeof(buf);
128 while ((c = getopt(argc, argv, "46af:r:t:")) != -1) {
140 _hf_sethostsfile(optarg);
143 __res_conf_name = optarg;
163 f = byaddr ? _dns_gethtbyaddr : _dns_gethtbyname;
167 f = byaddr ? _yp_gethtbyaddr : _yp_gethtbyname;
171 f = byaddr ? _hf_gethtbyaddr : _hf_gethtbyname;
174 errx(EXIT_FAILURE, "Unknown db type `%s'", type);
178 struct in6_addr addr;
179 af = strchr(*argv, ':') ? AF_INET6 : AF_INET;
180 len = af == AF_INET ? NS_INADDRSZ : NS_IN6ADDRSZ;
181 if (inet_pton(af, *argv, &addr) == -1)
182 err(EXIT_FAILURE, "Can't parse `%s'", *argv);
184 geta(gethostbyaddr((const char *)&addr, len, af));
186 getby(f, &info, &addr, len, af);
189 geta(gethostbyname2(*argv, af));
191 getby(f, &info, *argv, len, af);