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49 * @(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93
50 * $FreeBSD: src/lib/libc/net/gethostbyht.c,v 1.27 2007/01/09 00:28:02 imp Exp $
53 #include <sys/param.h>
54 #include <sys/socket.h>
55 #include <netinet/in.h>
56 #include <arpa/inet.h>
63 #include <arpa/nameser.h> /* XXX */
64 #include <resolv.h> /* XXX */
65 #include "netdb_private.h"
68 _sethosthtent(int f, struct hostent_data *hed)
71 hed->hostf = fopen(_PATH_HOSTS, "r");
78 _endhosthtent(struct hostent_data *hed)
80 if (hed->hostf && !hed->stayopen) {
87 gethostent_p(struct hostent *he, struct hostent_data *hed, int mapped,
93 char hostbuf[BUFSIZ + 1];
95 if (!hed->hostf && !(hed->hostf = fopen(_PATH_HOSTS, "r"))) {
96 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
100 if (!(p = fgets(hostbuf, sizeof hostbuf, hed->hostf))) {
101 RES_SET_H_ERRNO(statp, HOST_NOT_FOUND);
106 cp = strpbrk(p, "#\n");
109 if (!(cp = strpbrk(p, " \t")))
112 if (inet_pton(AF_INET6, p, hed->host_addr) > 0) {
115 } else if (inet_pton(AF_INET, p, hed->host_addr) > 0) {
117 _map_v4v6_address((char *)hed->host_addr,
118 (char *)hed->host_addr);
128 hed->h_addr_ptrs[0] = (char *)hed->host_addr;
129 hed->h_addr_ptrs[1] = NULL;
130 he->h_addr_list = hed->h_addr_ptrs;
133 while (*cp == ' ' || *cp == '\t')
136 ep = hed->hostbuf + sizeof hed->hostbuf;
138 q = he->h_aliases = hed->host_aliases;
139 if ((p = strpbrk(cp, " \t")) != NULL)
141 len = strlen(cp) + 1;
143 RES_SET_H_ERRNO(statp, NO_RECOVERY);
146 strlcpy(bp, cp, ep - bp);
150 if (*cp == ' ' || *cp == '\t') {
154 if (q >= &hed->host_aliases[_MAXALIASES - 1])
156 if ((p = strpbrk(cp, " \t")) != NULL)
158 len = strlen(cp) + 1;
161 strlcpy(bp, cp, ep - bp);
167 RES_SET_H_ERRNO(statp, NETDB_SUCCESS);
172 gethostent_r(struct hostent *hptr, char *buffer, size_t buflen,
173 struct hostent **result, int *h_errnop)
175 struct hostent_data *hed;
179 statp = __res_state();
180 if ((statp->options & RES_INIT) == 0 && res_ninit(statp) == -1) {
181 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
182 *h_errnop = statp->res_h_errno;
185 if ((hed = __hostent_data_init()) == NULL) {
186 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
187 *h_errnop = statp->res_h_errno;
190 if (gethostent_p(&he, hed, statp->options & RES_USE_INET6, statp) != 0)
192 if (__copy_hostent(&he, hptr, buffer, buflen) != 0)
202 struct hostent *rval;
205 if ((hd = __hostdata_init()) == NULL)
207 if (gethostent_r(&hd->host, hd->data, sizeof(hd->data), &rval,
214 _ht_gethostbyname(void *rval, void *cb_data __unused, va_list ap)
220 int *errnop __unused;
222 struct hostent *hptr, he;
223 struct hostent_data *hed;
228 name = va_arg(ap, const char *);
229 af = va_arg(ap, int);
230 hptr = va_arg(ap, struct hostent *);
231 buffer = va_arg(ap, char *);
232 buflen = va_arg(ap, size_t);
233 errnop = va_arg(ap, int *);
234 h_errnop = va_arg(ap, int *);
236 *((struct hostent **)rval) = NULL;
238 statp = __res_state();
239 if ((hed = __hostent_data_init()) == NULL) {
240 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
241 *h_errnop = statp->res_h_errno;
242 return (NS_NOTFOUND);
245 _sethosthtent(0, hed);
246 while ((error = gethostent_p(&he, hed, 0, statp)) == 0) {
247 if (he.h_addrtype != af)
249 if (he.h_addrtype == AF_INET &&
250 statp->options & RES_USE_INET6) {
251 _map_v4v6_address(he.h_addr, he.h_addr);
252 he.h_length = IN6ADDRSZ;
253 he.h_addrtype = AF_INET6;
255 if (strcasecmp(he.h_name, name) == 0)
257 for (cp = he.h_aliases; *cp != NULL; cp++)
258 if (strcasecmp(*cp, name) == 0)
265 *h_errnop = statp->res_h_errno;
266 return (NS_NOTFOUND);
268 if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
269 *h_errnop = statp->res_h_errno;
270 return (NS_NOTFOUND);
272 *((struct hostent **)rval) = hptr;
277 _ht_gethostbyaddr(void *rval, void *cb_data __unused, va_list ap)
284 int *errnop __unused;
286 struct hostent *hptr, he;
287 struct hostent_data *hed;
291 addr = va_arg(ap, const void *);
292 len = va_arg(ap, socklen_t);
293 af = va_arg(ap, int);
294 hptr = va_arg(ap, struct hostent *);
295 buffer = va_arg(ap, char *);
296 buflen = va_arg(ap, size_t);
297 errnop = va_arg(ap, int *);
298 h_errnop = va_arg(ap, int *);
300 *((struct hostent **)rval) = NULL;
302 statp = __res_state();
303 if ((hed = __hostent_data_init()) == NULL) {
304 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
305 *h_errnop = statp->res_h_errno;
306 return (NS_NOTFOUND);
309 _sethosthtent(0, hed);
310 while ((error = gethostent_p(&he, hed, 0, statp)) == 0)
311 if (he.h_addrtype == af && !bcmp(he.h_addr, addr, len)) {
312 if (he.h_addrtype == AF_INET &&
313 statp->options & RES_USE_INET6) {
314 _map_v4v6_address(he.h_addr, he.h_addr);
315 he.h_length = IN6ADDRSZ;
316 he.h_addrtype = AF_INET6;
323 return (NS_NOTFOUND);
324 if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
325 *h_errnop = statp->res_h_errno;
326 return (NS_NOTFOUND);
328 *((struct hostent **)rval) = hptr;