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 1.16 2003/01/05 14:05:24 fenner 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>
44 #include <rpcsvc/yp_prot.h>
45 #include <rpcsvc/ypclnt.h>
54 static char *host_aliases[MAXALIASES];
55 static char hostaddr[MAXADDRS];
56 static char *host_addrs[2];
58 static struct hostent *
59 _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];
77 h_errno = NETDB_INTERNAL;
81 if (domain == (char *)NULL)
82 if (yp_get_default_domain (&domain)) {
83 h_errno = NETDB_INTERNAL;
84 return ((struct hostent *)NULL);
87 if (yp_match(domain, map, name, strlen(name), &result, &resultlen)) {
88 h_errno = HOST_NOT_FOUND;
89 return ((struct hostent *)NULL);
92 /* avoid potential memory leak */
93 bcopy((char *)result, (char *)&ypbuf, resultlen);
94 ypbuf[resultlen] = '\0';
96 result = (char *)&ypbuf;
98 if ((cp = index(result, '\n')))
101 cp = strpbrk(result, " \t");
103 h.h_addr_list = host_addrs;
105 addr = inet_addr(result);
106 bcopy((char *)&addr, h.h_addr, size);
108 h.h_addrtype = AF_INET;
109 while (*cp == ' ' || *cp == '\t')
112 q = h.h_aliases = host_aliases;
113 cp = strpbrk(cp, " \t");
117 if (*cp == ' ' || *cp == '\t') {
121 if (q < &host_aliases[MAXALIASES - 1])
123 cp = strpbrk(cp, " \t");
132 /* XXX _gethostbynisname/_gethostbynisaddr only used by getaddrinfo */
134 _gethostbynisname(const char *name, int af)
137 return _gethostbynis(name, "hosts.byname", af);
144 _gethostbynisaddr(const char *addr, int len, int af)
147 return _gethostbynis(inet_ntoa(*(struct in_addr *)addr),
156 _nis_gethostbyname(void *rval, void *cb_data, va_list ap)
162 name = va_arg(ap, const char *);
163 af = va_arg(ap, int);
165 *(struct hostent **)rval = _gethostbynis(name, "hosts.byname", af);
166 return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND;
173 _nis_gethostbyaddr(void *rval, void *cb_data, va_list ap)
180 addr = va_arg(ap, const char *);
181 len = va_arg(ap, int);
182 af = va_arg(ap, int);
184 *(struct hostent **)rval =_gethostbynis(inet_ntoa(*(struct in_addr *)addr),"hosts.byaddr", af);
185 return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND;