2 * Copyright (c) 1985, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
35 * Permission to use, copy, modify, and distribute this software for any
36 * purpose with or without fee is hereby granted, provided that the above
37 * copyright notice and this permission notice appear in all copies, and that
38 * the name of Digital Equipment Corporation not be used in advertising or
39 * publicity pertaining to distribution of the document or software without
40 * specific, written prior permission.
42 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
43 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
44 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
45 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
46 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
47 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
48 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
54 #if defined(LIBC_SCCS) && !defined(lint)
55 static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93";
56 static char rcsid[] = "$FreeBSD: src/lib/libc/net/gethostbyht.c,v 1.12 1999/08/28 00:00:05 peter Exp $";
57 #endif /* LIBC_SCCS and not lint */
59 #include <sys/param.h>
60 #include <sys/socket.h>
61 #include <netinet/in.h>
62 #include <arpa/inet.h>
68 #include <arpa/nameser.h> /* XXX */
69 #include <resolv.h> /* XXX */
73 static struct hostent host;
74 static char *host_aliases[MAXALIASES];
75 static char hostbuf[BUFSIZ+1];
76 static FILE *hostf = NULL;
77 static u_int32_t host_addr[4]; /* IPv4 or IPv6 */
78 static char *h_addr_ptrs[2];
79 static int stayopen = 0;
86 hostf = fopen(_PATH_HOSTS, "r" );
95 if (hostf && !stayopen) {
105 register char *cp, **q;
108 if (!hostf && !(hostf = fopen(_PATH_HOSTS, "r" ))) {
109 h_errno = NETDB_INTERNAL;
113 if (!(p = fgets(hostbuf, sizeof hostbuf, hostf))) {
114 h_errno = HOST_NOT_FOUND;
119 if (!(cp = strpbrk(p, "#\n")))
122 if (!(cp = strpbrk(p, " \t")))
125 if (inet_pton(AF_INET6, p, host_addr) > 0) {
128 } else if (inet_pton(AF_INET, p, host_addr) > 0) {
129 if (_res.options & RES_USE_INET6) {
130 _map_v4v6_address((char*)host_addr, (char*)host_addr);
140 h_addr_ptrs[0] = (char *)host_addr;
141 h_addr_ptrs[1] = NULL;
142 host.h_addr_list = h_addr_ptrs;
144 host.h_addrtype = af;
145 while (*cp == ' ' || *cp == '\t')
148 q = host.h_aliases = host_aliases;
149 if ((cp = strpbrk(cp, " \t")) != NULL)
152 if (*cp == ' ' || *cp == '\t') {
156 if (q < &host_aliases[MAXALIASES - 1])
158 if ((cp = strpbrk(cp, " \t")) != NULL)
162 h_errno = NETDB_SUCCESS;
167 _gethostbyhtname(name, af)
171 register struct hostent *p;
175 while ((p = gethostent()) != NULL) {
176 if (p->h_addrtype != af)
178 if (strcasecmp(p->h_name, name) == 0)
180 for (cp = p->h_aliases; *cp != 0; cp++)
181 if (strcasecmp(*cp, name) == 0)
190 _gethostbyhtaddr(addr, len, af)
194 register struct hostent *p;
197 while ((p = gethostent()) != NULL)
198 if (p->h_addrtype == af && !bcmp(p->h_addr, addr, len))