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
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
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>
42 #include <resolv.h> /* XXX */
45 #include <rpcsvc/yp_prot.h>
46 #include <rpcsvc/ypclnt.h>
48 #include "netdb_private.h"
52 _gethostbynis(const char *name, char *map, int af, struct hostent *he,
53 struct hostent_data *hed)
58 int resultlen, size, addrok = 0;
59 char ypbuf[YPMAXRECORD + 2];
62 statp = __res_state();
72 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
76 if (hed->yp_domain == (char *)NULL)
77 if (yp_get_default_domain (&hed->yp_domain)) {
78 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
82 if (yp_match(hed->yp_domain, map, name, strlen(name), &result,
84 RES_SET_H_ERRNO(statp, HOST_NOT_FOUND);
88 /* avoid potential memory leak */
89 bcopy((char *)result, (char *)&ypbuf, resultlen);
90 ypbuf[resultlen] = '\0';
92 result = (char *)&ypbuf;
94 if ((cp = index(result, '\n')))
97 cp = strpbrk(result, " \t");
99 he->h_addr_list = hed->h_addr_ptrs;
100 he->h_addr = (char *)hed->host_addr;
103 addrok = inet_aton(result, (struct in_addr *)hed->host_addr);
106 if (statp->options & RES_USE_INET6) {
107 _map_v4v6_address((char *)hed->host_addr,
108 (char *)hed->host_addr);
114 addrok = inet_pton(af, result, hed->host_addr);
118 RES_SET_H_ERRNO(statp, HOST_NOT_FOUND);
121 he->h_addr_list[1] = NULL;
124 while (*cp == ' ' || *cp == '\t')
127 ep = hed->hostbuf + sizeof hed->hostbuf;
129 q = he->h_aliases = hed->host_aliases;
130 p = strpbrk(cp, " \t");
133 size = strlen(cp) + 1;
134 if (ep - bp < size) {
135 RES_SET_H_ERRNO(statp, NO_RECOVERY);
138 strlcpy(bp, cp, ep - bp);
142 if (*cp == ' ' || *cp == '\t') {
146 if (q >= &hed->host_aliases[_MAXALIASES - 1])
148 p = strpbrk(cp, " \t");
151 size = strlen(cp) + 1;
154 strlcpy(bp, cp, ep - bp);
164 _gethostbynisname_r(const char *name, int af, struct hostent *he,
165 struct hostent_data *hed)
171 map = "hosts.byname";
174 map = "ipnodes.byname";
177 return (_gethostbynis(name, map, af, he, hed));
181 _gethostbynisaddr_r(const void *addr, socklen_t len, int af,
182 struct hostent *he, struct hostent_data *hed)
189 map = "hosts.byaddr";
192 map = "ipnodes.byaddr";
195 if (inet_ntop(af, addr, numaddr, sizeof(numaddr)) == NULL)
197 return (_gethostbynis(numaddr, map, af, he, hed));
201 /* XXX _gethostbynisname/_gethostbynisaddr only used by getipnodeby*() */
203 _gethostbynisname(const char *name, int af)
207 struct hostent_data *hed;
212 statp = __res_state();
213 if ((he = __hostent_init()) == NULL ||
214 (hed = __hostent_data_init()) == NULL) {
215 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
219 oresopt = statp->options;
220 statp->options &= ~RES_USE_INET6;
221 error = _gethostbynisname_r(name, af, he, hed);
222 statp->options = oresopt;
223 return (error == 0) ? he : NULL;
230 _gethostbynisaddr(const void *addr, socklen_t len, int af)
234 struct hostent_data *hed;
239 statp = __res_state();
240 if ((he = __hostent_init()) == NULL ||
241 (hed = __hostent_data_init()) == NULL) {
242 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
246 oresopt = statp->options;
247 statp->options &= ~RES_USE_INET6;
248 error = _gethostbynisaddr_r(addr, len, af, he, hed);
249 statp->options = oresopt;
250 return (error == 0) ? he : NULL;
257 _nis_gethostbyname(void *rval, void *cb_data, va_list ap)
264 int *errnop, *h_errnop;
265 struct hostent *hptr, he;
266 struct hostent_data *hed;
269 name = va_arg(ap, const char *);
270 af = va_arg(ap, int);
271 hptr = va_arg(ap, struct hostent *);
272 buffer = va_arg(ap, char *);
273 buflen = va_arg(ap, size_t);
274 errnop = va_arg(ap, int *);
275 h_errnop = va_arg(ap, int *);
277 *((struct hostent **)rval) = NULL;
279 statp = __res_state();
280 if ((hed = __hostent_data_init()) == NULL) {
281 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
282 *h_errnop = statp->res_h_errno;
283 return (NS_NOTFOUND);
286 if (_gethostbynisname_r(name, af, &he, hed) != 0) {
287 *h_errnop = statp->res_h_errno;
288 return (NS_NOTFOUND);
290 if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
292 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
293 *h_errnop = statp->res_h_errno;
296 *((struct hostent **)rval) = hptr;
299 *((struct hostent **)rval) = NULL;
305 _nis_gethostbyaddr(void *rval, void *cb_data, va_list ap)
313 int *errnop, *h_errnop;
314 struct hostent *hptr, he;
315 struct hostent_data *hed;
318 addr = va_arg(ap, const void *);
319 len = va_arg(ap, socklen_t);
320 af = va_arg(ap, int);
321 hptr = va_arg(ap, struct hostent *);
322 buffer = va_arg(ap, char *);
323 buflen = va_arg(ap, size_t);
324 errnop = va_arg(ap, int *);
325 h_errnop = va_arg(ap, int *);
327 *((struct hostent **)rval) = NULL;
329 statp = __res_state();
330 if ((hed = __hostent_data_init()) == NULL) {
331 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
332 *h_errnop = statp->res_h_errno;
333 return (NS_NOTFOUND);
336 if (_gethostbynisaddr_r(addr, len, af, &he, hed) != 0) {
337 *h_errnop = statp->res_h_errno;
338 return (NS_NOTFOUND);
340 if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
342 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
343 *h_errnop = statp->res_h_errno;
346 *((struct hostent **)rval) = hptr;
349 *((struct hostent **)rval) = NULL;