2 * SPDX-License-Identifier: BSD-2-Clause
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 #include <sys/param.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
32 #include <arpa/inet.h>
42 #include <arpa/nameser.h>
45 #include <rpcsvc/yp_prot.h>
46 #include <rpcsvc/ypclnt.h>
48 #include "netdb_private.h"
52 _getnetbynis(const char *name, char *map, int af, struct netent *ne,
53 struct netent_data *ned)
70 if (ned->yp_domain == (char *)NULL)
71 if (yp_get_default_domain (&ned->yp_domain))
74 if (yp_match(ned->yp_domain, map, name, strlen(name), &result,
78 ypbuf = alloca(resultlen + 2);
79 bcopy(result, ypbuf, resultlen);
80 ypbuf[resultlen] = '\0';
84 if ((cp = strchr(result, '\n')))
87 cp = strpbrk(result, " \t");
90 ep = ned->netbuf + sizeof ned->netbuf;
91 len = strlen(result) + 1;
93 RES_SET_H_ERRNO(__res_state(), NO_RECOVERY);
96 strlcpy(bp, result, ep - bp);
100 while (*cp == ' ' || *cp == '\t')
103 ne->n_net = inet_network(cp);
104 ne->n_addrtype = AF_INET;
106 q = ne->n_aliases = ned->net_aliases;
107 cp = strpbrk(cp, " \t");
111 if (*cp == ' ' || *cp == '\t') {
115 if (q > &ned->net_aliases[_MAXALIASES - 1])
117 p = strpbrk(cp, " \t");
120 len = strlen(cp) + 1;
123 strlcpy(bp, cp, ep - bp);
134 _nis_getnetbyname(void *rval, void *cb_data, va_list ap)
140 int *errnop, *h_errnop;
141 struct netent *nptr, ne;
142 struct netent_data *ned;
145 name = va_arg(ap, const char *);
146 nptr = va_arg(ap, struct netent *);
147 buffer = va_arg(ap, char *);
148 buflen = va_arg(ap, size_t);
149 errnop = va_arg(ap, int *);
150 h_errnop = va_arg(ap, int *);
152 statp = __res_state();
153 if ((ned = __netent_data_init()) == NULL) {
154 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
155 *h_errnop = statp->res_h_errno;
159 if (_getnetbynis(name, "networks.byname", AF_INET, &ne, ned) != 0) {
160 *h_errnop = statp->res_h_errno;
161 return (NS_NOTFOUND);
163 if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
165 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
166 *h_errnop = statp->res_h_errno;
169 *((struct netent **)rval) = nptr;
178 _nis_getnetbyaddr(void *rval, void *cb_data, va_list ap)
185 int *errnop, *h_errnop;
186 struct netent *nptr, ne;
187 struct netent_data *ned;
191 unsigned int netbr[4];
195 addr = va_arg(ap, uint32_t);
196 af = va_arg(ap, int);
197 nptr = va_arg(ap, struct netent *);
198 buffer = va_arg(ap, char *);
199 buflen = va_arg(ap, size_t);
200 errnop = va_arg(ap, int *);
201 h_errnop = va_arg(ap, int *);
203 statp = __res_state();
204 if ((ned = __netent_data_init()) == NULL) {
205 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
206 *h_errnop = statp->res_h_errno;
211 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
212 *h_errnop = statp->res_h_errno;
213 errno = EAFNOSUPPORT;
217 for (nn = 4, net2 = addr; net2; net2 >>= 8) {
218 netbr[--nn] = net2 & 0xff;
222 case 3: /* Class A */
223 sprintf(buf, "%u", netbr[3]);
225 case 2: /* Class B */
226 sprintf(buf, "%u.%u", netbr[2], netbr[3]);
228 case 1: /* Class C */
229 sprintf(buf, "%u.%u.%u", netbr[1], netbr[2], netbr[3]);
231 case 0: /* Class D - E */
232 sprintf(buf, "%u.%u.%u.%u", netbr[0], netbr[1],
238 cp = str + (strlen(str) - 2);
240 while(!strcmp(cp, ".0")) {
242 cp = str + (strlen(str) - 2);
245 if (_getnetbynis(str, "networks.byaddr", af, &ne, ned) != 0) {
246 *h_errnop = statp->res_h_errno;
247 return (NS_NOTFOUND);
249 if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
251 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
252 *h_errnop = statp->res_h_errno;
255 *((struct netent **)rval) = nptr;