Lines Matching +full:resolver +full:- +full:to +full:- +full:digital
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
5 * -
18 * may be used to endorse or promote products derived from this software
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * -
33 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
35 * Permission to use, copy, modify, and distribute this software for any
38 * the name of Digital Equipment Corporation not be used in advertising or
39 * publicity pertaining to distribution of the document or software without
42 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
43 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
44 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
50 * -
51 * --Copyright--
106 if (res->options & RES_DEBUG) { in dbg_printf()
122 return (-1); \
130 return (-1); \
151 he->h_name = NULL; in gethostanswer()
152 eom = answer->buf + anslen; in gethostanswer()
163 return (-1); /* XXX should be abort(); */ in gethostanswer()
168 hp = &answer->hdr; in gethostanswer()
169 ancount = ntohs(hp->ancount); in gethostanswer()
170 qdcount = ntohs(hp->qdcount); in gethostanswer()
171 bp = hed->hostbuf; in gethostanswer()
172 ep = hed->hostbuf + sizeof hed->hostbuf; in gethostanswer()
173 cp = answer->buf; in gethostanswer()
177 return (-1); in gethostanswer()
179 n = dn_expand(answer->buf, eom, cp, bp, ep - bp); in gethostanswer()
182 return (-1); in gethostanswer()
188 * (i.e., with the succeeding search-domain tacked on). in gethostanswer()
193 return (-1); in gethostanswer()
195 he->h_name = bp; in gethostanswer()
198 qname = he->h_name; in gethostanswer()
200 ap = hed->host_aliases; in gethostanswer()
202 he->h_aliases = hed->host_aliases; in gethostanswer()
203 hap = hed->h_addr_ptrs; in gethostanswer()
205 he->h_addr_list = hed->h_addr_ptrs; in gethostanswer()
208 _dns_ttl_ = -1; in gethostanswer()
209 while (ancount-- > 0 && cp < eom && !had_error) { in gethostanswer()
210 n = dn_expand(answer->buf, eom, cp, bp, ep - bp); in gethostanswer()
229 /* XXX - debug? syslog? */ in gethostanswer()
231 continue; /* XXX - had_error++ ? */ in gethostanswer()
234 if (ap >= &hed->host_aliases[_MAXALIASES-1]) in gethostanswer()
236 n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); in gethostanswer()
244 return (-1); in gethostanswer()
256 if (n > ep - bp || n >= MAXHOSTNAMELEN) { in gethostanswer()
261 he->h_name = bp; in gethostanswer()
266 n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); in gethostanswer()
274 return (-1); in gethostanswer()
278 if (n > ep - bp || n >= MAXHOSTNAMELEN) { in gethostanswer()
297 continue; /* XXX - had_error++ ? */ in gethostanswer()
305 continue; /* XXX - had_error++ ? */ in gethostanswer()
307 n = dn_expand(answer->buf, eom, cp, bp, ep - bp); in gethostanswer()
316 return (-1); in gethostanswer()
319 he->h_name = bp; in gethostanswer()
320 else if (ap < &hed->host_aliases[_MAXALIASES-1]) in gethostanswer()
323 n = -1; in gethostanswer()
324 if (n != -1) { in gethostanswer()
334 he->h_name = bp; in gethostanswer()
335 if (statp->options & RES_USE_INET6) { in gethostanswer()
349 if (strcasecmp(he->h_name, bp) != 0) { in gethostanswer()
351 AskedForGot, he->h_name, bp); in gethostanswer()
353 continue; /* XXX - had_error++ ? */ in gethostanswer()
355 if (n != he->h_length) { in gethostanswer()
362 he->h_name = bp; in gethostanswer()
367 bp += sizeof(align) - ((u_long)bp % sizeof(align)); in gethostanswer()
374 if (hap >= &hed->h_addr_ptrs[_MAXADDRS-1]) { in gethostanswer()
386 return (-1); in gethostanswer()
393 return (-1); in gethostanswer()
405 * in its return structures - should give it the "best" in gethostanswer()
408 if (statp->nsort && haveanswer > 1 && qtype == T_A) in gethostanswer()
409 addrsort(hed->h_addr_ptrs, haveanswer, statp); in gethostanswer()
411 if (!he->h_name) { in gethostanswer()
413 if (n > ep - bp || n >= MAXHOSTNAMELEN) in gethostanswer()
416 he->h_name = bp; in gethostanswer()
419 if (statp->options & RES_USE_INET6) in gethostanswer()
426 return (-1); in gethostanswer()
429 /* XXX: for async DNS resolver in ypserv */
446 he->h_addrtype = AF_INET6; in __dns_getanswer()
447 he->h_length = NS_IN6ADDRSZ; in __dns_getanswer()
451 he->h_addrtype = AF_INET; in __dns_getanswer()
452 he->h_length = NS_INADDRSZ; in __dns_getanswer()
488 *h_errnop = statp->res_h_errno; in _dns_gethostbyname()
504 *h_errnop = statp->res_h_errno; in _dns_gethostbyname()
511 *h_errnop = statp->res_h_errno; in _dns_gethostbyname()
514 n = res_nsearch(statp, name, C_IN, type, buf->buf, sizeof(buf->buf)); in _dns_gethostbyname()
518 *h_errnop = statp->res_h_errno; in _dns_gethostbyname()
520 } else if (n > sizeof(buf->buf)) { in _dns_gethostbyname()
523 *h_errnop = statp->res_h_errno; in _dns_gethostbyname()
529 *h_errnop = statp->res_h_errno; in _dns_gethostbyname()
530 switch (statp->res_h_errno) { in _dns_gethostbyname()
543 *h_errnop = statp->res_h_errno; in _dns_gethostbyname()
591 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
597 (void) sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa", in _dns_gethostbyaddr()
605 for (n = NS_IN6ADDRSZ - 1; n >= 0; n--) { in _dns_gethostbyaddr()
617 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
620 n = res_nquery(statp, qbuf, C_IN, T_PTR, (u_char *)buf->buf, in _dns_gethostbyaddr()
621 sizeof buf->buf); in _dns_gethostbyaddr()
625 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
628 if (n > sizeof buf->buf) { in _dns_gethostbyaddr()
631 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
636 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
637 switch (statp->res_h_errno) { in _dns_gethostbyaddr()
656 old_options = statp->options; in _dns_gethostbyaddr()
657 statp->options &= ~RES_DNSRCH; in _dns_gethostbyaddr()
658 statp->options |= RES_DEFNAMES; in _dns_gethostbyaddr()
668 statp->options = old_options; in _dns_gethostbyaddr()
670 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
673 statp->options = old_options; in _dns_gethostbyaddr()
674 for (haddr = rhe->h_addr_list; *haddr; haddr++) in _dns_gethostbyaddr()
684 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
691 memcpy(hed->host_addr, uaddr, len); in _dns_gethostbyaddr()
692 hed->h_addr_ptrs[0] = (char *)hed->host_addr; in _dns_gethostbyaddr()
693 hed->h_addr_ptrs[1] = NULL; in _dns_gethostbyaddr()
694 if (af == AF_INET && (statp->options & RES_USE_INET6)) { in _dns_gethostbyaddr()
695 _map_v4v6_address((char*)hed->host_addr, (char*)hed->host_addr); in _dns_gethostbyaddr()
702 *h_errnop = statp->res_h_errno; in _dns_gethostbyaddr()
721 for (j = 0 ; (unsigned)j < res->nsort; j++) in addrsort()
722 if (res->sort_list[j].addr.s_addr == in addrsort()
723 (((struct in_addr *)(*p))->s_addr & res->sort_list[j].mask)) in addrsort()
726 if (needsort == 0 && i > 0 && j < aval[i-1]) in addrsort()
733 for (j = needsort - 1; j >= 0; j--) { in addrsort()
759 if ((statp->options & RES_INIT) == 0 && res_ninit(statp) == -1) in _sethostdnsent()
762 statp->options |= RES_STAYOPEN | RES_USEVC; in _sethostdnsent()
771 statp->options &= ~(RES_STAYOPEN | RES_USEVC); in _endhostdnsent()