2 * Copyright (c) 1994, Garrett Wollman
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * $FreeBSD: src/lib/libc/net/gethostbynis.c,v 1.10.2.1 2000/10/01 16:39:47 nectar Exp $
26 * $DragonFly: src/lib/libc/net/gethostbynis.c,v 1.4 2005/11/13 02:04:47 swildner Exp $
29 #include <sys/param.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
32 #include <arpa/inet.h>
33 #include <arpa/nameser.h>
42 #include <rpcsvc/yp_prot.h>
43 #include <rpcsvc/ypclnt.h>
52 static char *host_aliases[MAXALIASES];
53 static char hostaddr[MAXADDRS];
54 static char *host_addrs[2];
57 static struct hostent *
58 _gethostbynis(const char *name, char *map, int af)
64 static struct hostent h;
65 static char *domain = (char *)NULL;
66 static char ypbuf[YPMAXRECORD + 2];
76 h_errno = NETDB_INTERNAL;
80 if (domain == (char *)NULL)
81 if (yp_get_default_domain (&domain)) {
82 h_errno = NETDB_INTERNAL;
83 return ((struct hostent *)NULL);
86 if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) {
87 h_errno = HOST_NOT_FOUND;
88 return ((struct hostent *)NULL);
91 /* avoid potential memory leak */
92 bcopy((char *)result, (char *)&ypbuf, resultlen);
93 ypbuf[resultlen] = '\0';
95 result = (char *)&ypbuf;
97 if ((cp = index(result, '\n')))
100 cp = strpbrk(result, " \t");
102 h.h_addr_list = host_addrs;
104 *((u_long *)h.h_addr) = inet_addr(result);
106 h.h_addrtype = AF_INET;
107 while (*cp == ' ' || *cp == '\t')
110 q = h.h_aliases = host_aliases;
111 cp = strpbrk(cp, " \t");
115 if (*cp == ' ' || *cp == '\t') {
119 if (q < &host_aliases[MAXALIASES - 1])
121 cp = strpbrk(cp, " \t");
133 _gethostbynisname(const char *name, int af)
135 return _gethostbynis(name, "hosts.byname", af);
139 _gethostbynisaddr(const char *addr, int len, int af)
141 return _gethostbynis(inet_ntoa(*(struct in_addr *)addr),"hosts.byaddr", af);