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/libc/net/getnetbynis.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>
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(const char *name, char *map, int af)
60 static struct netent h;
61 static char *domain = (char *)NULL;
62 static char ypbuf[YPMAXRECORD + 2];
73 if (domain == (char *)NULL)
74 if (yp_get_default_domain (&domain))
77 if (yp_match(domain, map, name, strlen(name), &result, &resultlen))
80 bcopy((char *)result, (char *)&ypbuf, resultlen);
81 ypbuf[resultlen] = '\0';
83 result = (char *)&ypbuf;
85 if ((cp = index(result, '\n')))
88 cp = strpbrk(result, " \t");
92 while (*cp == ' ' || *cp == '\t')
95 h.n_net = inet_network(cp);
96 h.n_addrtype = AF_INET;
98 q = h.n_aliases = host_aliases;
99 cp = strpbrk(cp, " \t");
103 if (*cp == ' ' || *cp == '\t') {
107 if (q < &host_aliases[MAXALIASES - 1])
109 cp = strpbrk(cp, " \t");
121 _getnetbynisname(const char *name)
123 return _getnetbynis(name, "networks.byname", AF_INET);
127 _getnetbynisaddr(unsigned long addr, int af)
132 unsigned int netbr[4];
136 errno = EAFNOSUPPORT;
140 for (nn = 4, net2 = addr; net2; net2 >>= 8) {
141 netbr[--nn] = net2 & 0xff;
145 case 3: /* Class A */
146 sprintf(buf, "%u", netbr[3]);
148 case 2: /* Class B */
149 sprintf(buf, "%u.%u", netbr[2], netbr[3]);
151 case 1: /* Class C */
152 sprintf(buf, "%u.%u.%u", netbr[1], netbr[2], netbr[3]);
154 case 0: /* Class D - E */
155 sprintf(buf, "%u.%u.%u.%u", netbr[0], netbr[1],
161 cp = str + (strlen(str) - 2);
163 while(!strcmp(cp, ".0")) {
165 cp = str + (strlen(str) - 2);
168 return _getnetbynis(str, "networks.byaddr", af);