2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1994, Garrett Wollman
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/socket.h>
33 #include <netinet/in.h>
34 #include <arpa/inet.h>
44 #include <arpa/nameser.h>
47 #include <rpcsvc/yp_prot.h>
48 #include <rpcsvc/ypclnt.h>
50 #include "netdb_private.h"
54 _getnetbynis(const char *name, char *map, int af, struct netent *ne,
55 struct netent_data *ned)
61 char ypbuf[YPMAXRECORD + 2];
72 if (ned->yp_domain == (char *)NULL)
73 if (yp_get_default_domain (&ned->yp_domain))
76 if (yp_match(ned->yp_domain, map, name, strlen(name), &result,
80 bcopy((char *)result, (char *)&ypbuf, resultlen);
81 ypbuf[resultlen] = '\0';
83 result = (char *)&ypbuf;
85 if ((cp = strchr(result, '\n')))
88 cp = strpbrk(result, " \t");
91 ep = ned->netbuf + sizeof ned->netbuf;
92 len = strlen(result) + 1;
94 RES_SET_H_ERRNO(__res_state(), NO_RECOVERY);
97 strlcpy(bp, result, ep - bp);
101 while (*cp == ' ' || *cp == '\t')
104 ne->n_net = inet_network(cp);
105 ne->n_addrtype = AF_INET;
107 q = ne->n_aliases = ned->net_aliases;
108 cp = strpbrk(cp, " \t");
112 if (*cp == ' ' || *cp == '\t') {
116 if (q > &ned->net_aliases[_MAXALIASES - 1])
118 p = strpbrk(cp, " \t");
121 len = strlen(cp) + 1;
124 strlcpy(bp, cp, ep - bp);
135 _nis_getnetbyname(void *rval, void *cb_data, va_list ap)
141 int *errnop, *h_errnop;
142 struct netent *nptr, ne;
143 struct netent_data *ned;
146 name = va_arg(ap, const char *);
147 nptr = va_arg(ap, struct netent *);
148 buffer = va_arg(ap, char *);
149 buflen = va_arg(ap, size_t);
150 errnop = va_arg(ap, int *);
151 h_errnop = va_arg(ap, int *);
153 statp = __res_state();
154 if ((ned = __netent_data_init()) == NULL) {
155 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
156 *h_errnop = statp->res_h_errno;
160 if (_getnetbynis(name, "networks.byname", AF_INET, &ne, ned) != 0) {
161 *h_errnop = statp->res_h_errno;
162 return (NS_NOTFOUND);
164 if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
166 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
167 *h_errnop = statp->res_h_errno;
170 *((struct netent **)rval) = nptr;
179 _nis_getnetbyaddr(void *rval, void *cb_data, va_list ap)
186 int *errnop, *h_errnop;
187 struct netent *nptr, ne;
188 struct netent_data *ned;
192 unsigned int netbr[4];
196 addr = va_arg(ap, uint32_t);
197 af = va_arg(ap, int);
198 nptr = va_arg(ap, struct netent *);
199 buffer = va_arg(ap, char *);
200 buflen = va_arg(ap, size_t);
201 errnop = va_arg(ap, int *);
202 h_errnop = va_arg(ap, int *);
204 statp = __res_state();
205 if ((ned = __netent_data_init()) == NULL) {
206 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
207 *h_errnop = statp->res_h_errno;
212 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
213 *h_errnop = statp->res_h_errno;
214 errno = EAFNOSUPPORT;
218 for (nn = 4, net2 = addr; net2; net2 >>= 8) {
219 netbr[--nn] = net2 & 0xff;
223 case 3: /* Class A */
224 sprintf(buf, "%u", netbr[3]);
226 case 2: /* Class B */
227 sprintf(buf, "%u.%u", netbr[2], netbr[3]);
229 case 1: /* Class C */
230 sprintf(buf, "%u.%u.%u", netbr[1], netbr[2], netbr[3]);
232 case 0: /* Class D - E */
233 sprintf(buf, "%u.%u.%u.%u", netbr[0], netbr[1],
239 cp = str + (strlen(str) - 2);
241 while(!strcmp(cp, ".0")) {
243 cp = str + (strlen(str) - 2);
246 if (_getnetbynis(str, "networks.byaddr", af, &ne, ned) != 0) {
247 *h_errnop = statp->res_h_errno;
248 return (NS_NOTFOUND);
250 if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
252 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
253 *h_errnop = statp->res_h_errno;
256 *((struct netent **)rval) = nptr;