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/getnetbynis.c,v 1.11 1999/08/28 00:00:07 peter Exp $
26 * $DragonFly: src/lib/libcr/net/Attic/getnetbynis.c,v 1.3 2004/10/25 19:38:25 drhodus Exp $
29 #include <sys/param.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
32 #include <arpa/inet.h>
39 #include <arpa/nameser.h>
42 #include <rpcsvc/yp_prot.h>
43 #include <rpcsvc/ypclnt.h>
50 static char *host_aliases[MAXALIASES];
53 static struct netent *
54 _getnetbynis(name, map, af)
63 static struct netent h;
64 static char *domain = (char *)NULL;
65 static char ypbuf[YPMAXRECORD + 2];
76 if (domain == (char *)NULL)
77 if (yp_get_default_domain (&domain))
80 if (yp_match(domain, map, name, strlen(name), &result, &resultlen))
83 bcopy((char *)result, (char *)&ypbuf, resultlen);
84 ypbuf[resultlen] = '\0';
86 result = (char *)&ypbuf;
88 if ((cp = index(result, '\n')))
91 cp = strpbrk(result, " \t");
95 while (*cp == ' ' || *cp == '\t')
98 h.n_net = inet_network(cp);
99 h.n_addrtype = AF_INET;
101 q = h.n_aliases = host_aliases;
102 cp = strpbrk(cp, " \t");
106 if (*cp == ' ' || *cp == '\t') {
110 if (q < &host_aliases[MAXALIASES - 1])
112 cp = strpbrk(cp, " \t");
124 _getnetbynisname(name)
127 return _getnetbynis(name, "networks.byname", AF_INET);
131 _getnetbynisaddr(addr, af)
138 unsigned int netbr[4];
142 errno = EAFNOSUPPORT;
146 for (nn = 4, net2 = addr; net2; net2 >>= 8) {
147 netbr[--nn] = net2 & 0xff;
151 case 3: /* Class A */
152 sprintf(buf, "%u", netbr[3]);
154 case 2: /* Class B */
155 sprintf(buf, "%u.%u", netbr[2], netbr[3]);
157 case 1: /* Class C */
158 sprintf(buf, "%u.%u.%u", netbr[1], netbr[2], netbr[3]);
160 case 0: /* Class D - E */
161 sprintf(buf, "%u.%u.%u.%u", netbr[0], netbr[1],
167 cp = str + (strlen(str) - 2);
169 while(!strcmp(cp, ".0")) {
171 cp = str + (strlen(str) - 2);
174 return _getnetbynis(str, "networks.byaddr", af);