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-rw-r--r--libc/netbsd/resolv/res_query.c415
1 files changed, 0 insertions, 415 deletions
diff --git a/libc/netbsd/resolv/res_query.c b/libc/netbsd/resolv/res_query.c
deleted file mode 100644
index 8e1321e..0000000
--- a/libc/netbsd/resolv/res_query.c
+++ /dev/null
@@ -1,415 +0,0 @@
-/* $NetBSD: res_query.c,v 1.7 2006/01/24 17:41:25 christos Exp $ */
-
-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
-
-/*
- * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
- * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <sys/cdefs.h>
-#if defined(LIBC_SCCS) && !defined(lint)
-#ifdef notdef
-static const char sccsid[] = "@(#)res_query.c 8.1 (Berkeley) 6/4/93";
-static const char rcsid[] = "Id: res_query.c,v 1.2.2.3.4.2 2004/03/16 12:34:19 marka Exp";
-#else
-__RCSID("$NetBSD: res_query.c,v 1.7 2006/01/24 17:41:25 christos Exp $");
-#endif
-#endif /* LIBC_SCCS and not lint */
-
-
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include "arpa_nameser.h"
-#include <ctype.h>
-#include <errno.h>
-#include <netdb.h>
-#ifdef ANDROID_CHANGES
-#include "resolv_private.h"
-#else
-#include <resolv.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-
-#define DISABLE_HOST_ALIAS 1
-
-/* Options. Leave them on. */
-#ifndef DEBUG
-#define DEBUG
-#endif
-
-#if PACKETSZ > 1024
-#define MAXPACKET PACKETSZ
-#else
-#define MAXPACKET 1024
-#endif
-
-/*
- * Formulate a normal query, send, and await answer.
- * Returned answer is placed in supplied buffer "answer".
- * Perform preliminary check of answer, returning success only
- * if no error is indicated and the answer count is nonzero.
- * Return the size of the response on success, -1 on error.
- * Error number is left in H_ERRNO.
- *
- * Caller must parse answer and determine whether it answers the question.
- */
-int
-res_nquery(res_state statp,
- const char *name, /* domain name */
- int class, int type, /* class and type of query */
- u_char *answer, /* buffer to put answer */
- int anslen) /* size of answer buffer */
-{
- u_char buf[MAXPACKET];
- HEADER *hp = (HEADER *)(void *)answer;
- int n;
- u_int oflags;
-
- oflags = statp->_flags;
-
-again:
- hp->rcode = NOERROR; /* default */
-
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";; res_query(%s, %d, %d)\n", name, class, type);
-#endif
-
- n = res_nmkquery(statp, QUERY, name, class, type, NULL, 0, NULL,
- buf, sizeof(buf));
-#ifdef RES_USE_EDNS0
- if (n > 0 && (statp->_flags & RES_F_EDNS0ERR) == 0 &&
- (statp->options & (RES_USE_EDNS0|RES_USE_DNSSEC)) != 0U)
- n = res_nopt(statp, n, buf, sizeof(buf), anslen);
-#endif
- if (n <= 0) {
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";; res_query: mkquery failed\n");
-#endif
- RES_SET_H_ERRNO(statp, NO_RECOVERY);
- return (n);
- }
- n = res_nsend(statp, buf, n, answer, anslen);
- if (n < 0) {
-#ifdef RES_USE_EDNS0
- /* if the query choked with EDNS0, retry without EDNS0 */
- if ((statp->options & (RES_USE_EDNS0|RES_USE_DNSSEC)) != 0U &&
- ((oflags ^ statp->_flags) & RES_F_EDNS0ERR) != 0) {
- statp->_flags |= RES_F_EDNS0ERR;
- if (statp->options & RES_DEBUG)
- printf(";; res_nquery: retry without EDNS0\n");
- goto again;
- }
-#endif
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";; res_query: send error\n");
-#endif
- RES_SET_H_ERRNO(statp, TRY_AGAIN);
- return (n);
- }
-
- if (hp->rcode != NOERROR || ntohs(hp->ancount) == 0) {
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";; rcode = (%s), counts = an:%d ns:%d ar:%d\n",
- p_rcode(hp->rcode),
- ntohs(hp->ancount),
- ntohs(hp->nscount),
- ntohs(hp->arcount));
-#endif
- switch (hp->rcode) {
- case NXDOMAIN:
- RES_SET_H_ERRNO(statp, HOST_NOT_FOUND);
- break;
- case SERVFAIL:
- RES_SET_H_ERRNO(statp, TRY_AGAIN);
- break;
- case NOERROR:
- RES_SET_H_ERRNO(statp, NO_DATA);
- break;
- case FORMERR:
- case NOTIMP:
- case REFUSED:
- default:
- RES_SET_H_ERRNO(statp, NO_RECOVERY);
- break;
- }
- return (-1);
- }
- return (n);
-}
-
-/*
- * Formulate a normal query, send, and retrieve answer in supplied buffer.
- * Return the size of the response on success, -1 on error.
- * If enabled, implement search rules until answer or unrecoverable failure
- * is detected. Error code, if any, is left in H_ERRNO.
- */
-int
-res_nsearch(res_state statp,
- const char *name, /* domain name */
- int class, int type, /* class and type of query */
- u_char *answer, /* buffer to put answer */
- int anslen) /* size of answer */
-{
- const char *cp, * const *domain;
- HEADER *hp = (HEADER *)(void *)answer;
- char tmp[NS_MAXDNAME];
- u_int dots;
- int trailing_dot, ret, saved_herrno;
- int got_nodata = 0, got_servfail = 0, root_on_list = 0;
- int tried_as_is = 0;
- int searched = 0;
-
- errno = 0;
- RES_SET_H_ERRNO(statp, HOST_NOT_FOUND); /* True if we never query. */
-
- dots = 0;
- for (cp = name; *cp != '\0'; cp++)
- dots += (*cp == '.');
- trailing_dot = 0;
- if (cp > name && *--cp == '.')
- trailing_dot++;
-
- /* If there aren't any dots, it could be a user-level alias. */
- if (!dots && (cp = res_hostalias(statp, name, tmp, sizeof tmp))!= NULL)
- return (res_nquery(statp, cp, class, type, answer, anslen));
-
- /*
- * If there are enough dots in the name, let's just give it a
- * try 'as is'. The threshold can be set with the "ndots" option.
- * Also, query 'as is', if there is a trailing dot in the name.
- */
- saved_herrno = -1;
- if (dots >= statp->ndots || trailing_dot) {
- ret = res_nquerydomain(statp, name, NULL, class, type,
- answer, anslen);
- if (ret > 0 || trailing_dot)
- return (ret);
- saved_herrno = statp->res_h_errno;
- tried_as_is++;
- }
-
- /*
- * We do at least one level of search if
- * - there is no dot and RES_DEFNAME is set, or
- * - there is at least one dot, there is no trailing dot,
- * and RES_DNSRCH is set.
- */
- if ((!dots && (statp->options & RES_DEFNAMES) != 0U) ||
- (dots && !trailing_dot && (statp->options & RES_DNSRCH) != 0U)) {
- int done = 0;
-
- for (domain = (const char * const *)statp->dnsrch;
- *domain && !done;
- domain++) {
- searched = 1;
-
- if (domain[0][0] == '\0' ||
- (domain[0][0] == '.' && domain[0][1] == '\0'))
- root_on_list++;
-
- ret = res_nquerydomain(statp, name, *domain,
- class, type,
- answer, anslen);
- if (ret > 0)
- return (ret);
-
- /*
- * If no server present, give up.
- * If name isn't found in this domain,
- * keep trying higher domains in the search list
- * (if that's enabled).
- * On a NO_DATA error, keep trying, otherwise
- * a wildcard entry of another type could keep us
- * from finding this entry higher in the domain.
- * If we get some other error (negative answer or
- * server failure), then stop searching up,
- * but try the input name below in case it's
- * fully-qualified.
- */
- if (errno == ECONNREFUSED) {
- RES_SET_H_ERRNO(statp, TRY_AGAIN);
- return (-1);
- }
-
- switch (statp->res_h_errno) {
- case NO_DATA:
- got_nodata++;
- /* FALLTHROUGH */
- case HOST_NOT_FOUND:
- /* keep trying */
- break;
- case TRY_AGAIN:
- if (hp->rcode == SERVFAIL) {
- /* try next search element, if any */
- got_servfail++;
- break;
- }
- /* FALLTHROUGH */
- default:
- /* anything else implies that we're done */
- done++;
- }
-
- /* if we got here for some reason other than DNSRCH,
- * we only wanted one iteration of the loop, so stop.
- */
- if ((statp->options & RES_DNSRCH) == 0U)
- done++;
- }
- }
-
- /*
- * If the query has not already been tried as is then try it
- * unless RES_NOTLDQUERY is set and there were no dots.
- */
- if ((dots || !searched || (statp->options & RES_NOTLDQUERY) == 0U) &&
- !(tried_as_is || root_on_list)) {
- ret = res_nquerydomain(statp, name, NULL, class, type,
- answer, anslen);
- if (ret > 0)
- return (ret);
- }
-
- /* if we got here, we didn't satisfy the search.
- * if we did an initial full query, return that query's H_ERRNO
- * (note that we wouldn't be here if that query had succeeded).
- * else if we ever got a nodata, send that back as the reason.
- * else send back meaningless H_ERRNO, that being the one from
- * the last DNSRCH we did.
- */
- if (saved_herrno != -1)
- RES_SET_H_ERRNO(statp, saved_herrno);
- else if (got_nodata)
- RES_SET_H_ERRNO(statp, NO_DATA);
- else if (got_servfail)
- RES_SET_H_ERRNO(statp, TRY_AGAIN);
- return (-1);
-}
-
-/*
- * Perform a call on res_query on the concatenation of name and domain,
- * removing a trailing dot from name if domain is NULL.
- */
-int
-res_nquerydomain(res_state statp,
- const char *name,
- const char *domain,
- int class, int type, /* class and type of query */
- u_char *answer, /* buffer to put answer */
- int anslen) /* size of answer */
-{
- char nbuf[MAXDNAME];
- const char *longname = nbuf;
- int n, d;
-
-#ifdef DEBUG
- if (statp->options & RES_DEBUG)
- printf(";; res_nquerydomain(%s, %s, %d, %d)\n",
- name, domain?domain:"<Nil>", class, type);
-#endif
- if (domain == NULL) {
- /*
- * Check for trailing '.';
- * copy without '.' if present.
- */
- n = strlen(name);
- if (n >= MAXDNAME) {
- RES_SET_H_ERRNO(statp, NO_RECOVERY);
- return (-1);
- }
- n--;
- if (n >= 0 && name[n] == '.') {
- strncpy(nbuf, name, (size_t)n);
- nbuf[n] = '\0';
- } else
- longname = name;
- } else {
- n = strlen(name);
- d = strlen(domain);
- if (n + d + 1 >= MAXDNAME) {
- RES_SET_H_ERRNO(statp, NO_RECOVERY);
- return (-1);
- }
- sprintf(nbuf, "%s.%s", name, domain);
- }
- return (res_nquery(statp, longname, class, type, answer, anslen));
-}
-
-const char *
-res_hostalias(const res_state statp, const char *name, char *dst, size_t siz) {
- return (NULL);
-}
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