This commit was manufactured by cvs2svn to create branch 'JB'.

1 files changed, 0 insertions, 736 deletions

diff --git a/lib/libc/net/gethostbydns.c b/lib/libc/net/gethostbydns.c
deleted file mode 100644
index 4d13e2e..0000000
--- a/lib/libc/net/gethostbydns.c
+++ /dev/null
@@ -1,736 +0,0 @@
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 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--
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)gethostnamadr.c	8.1 (Berkeley) 6/4/93";
-static char fromrcsid[] = "From: Id: gethnamaddr.c,v 8.21 1997/06/01 20:34:37 vixie Exp";
-static char rcsid[] = "$Id: gethostbydns.c,v 1.21 1997/03/12 11:02:00 peter Exp $";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <netdb.h>
-#include <resolv.h>
-#include <ctype.h>
-#include <errno.h>
-#include <syslog.h>
-
-#include "res_config.h"
-
-#define SPRINTF(x) ((size_t)sprintf x)
-
-#define	MAXALIASES	35
-#define	MAXADDRS	35
-
-static const char AskedForGot[] =
-		"gethostby*.gethostanswer: asked for \"%s\", got \"%s\"";
-
-static char *h_addr_ptrs[MAXADDRS + 1];
-
-static struct hostent host;
-static char *host_aliases[MAXALIASES];
-static char hostbuf[8*1024];
-static u_char host_addr[16];	/* IPv4 or IPv6 */
-
-#ifdef RESOLVSORT
-static void addrsort __P((char **, int));
-#endif
-
-#if PACKETSZ > 1024
-#define	MAXPACKET	PACKETSZ
-#else
-#define	MAXPACKET	1024
-#endif
-
-typedef union {
-    HEADER hdr;
-    u_char buf[MAXPACKET];
-} querybuf;
-
-typedef union {
-    int32_t al;
-    char ac;
-} align;
-
-extern int h_errno;
-int _dns_ttl_;
-
-#ifdef DEBUG
-static void
-dprintf(msg, num)
-	char *msg;
-	int num;
-{
-	if (_res.options & RES_DEBUG) {
-		int save = errno;
-
-		printf(msg, num);
-		errno = save;
-	}
-}
-#else
-# define dprintf(msg, num) /*nada*/
-#endif
-
-static struct hostent *
-gethostanswer(answer, anslen, qname, qtype)
-	const querybuf *answer;
-	int anslen;
-	const char *qname;
-	int qtype;
-{
-	register const HEADER *hp;
-	register const u_char *cp;
-	register int n;
-	const u_char *eom;
-	char *bp, **ap, **hap;
-	int type, class, buflen, ancount, qdcount;
-	int haveanswer, had_error;
-	int toobig = 0;
-	char tbuf[MAXDNAME];
-	const char *tname;
-	int (*name_ok) __P((const char *));
-
-	tname = qname;
-	host.h_name = NULL;
-	eom = answer->buf + anslen;
-	switch (qtype) {
-	case T_A:
-	case T_AAAA:
-		name_ok = res_hnok;
-		break;
-	case T_PTR:
-		name_ok = res_dnok;
-		break;
-	default:
-		h_errno = NO_RECOVERY;
-		return (NULL);	/* XXX should be abort(); */
-	}
-	/*
-	 * find first satisfactory answer
-	 */
-	hp = &answer->hdr;
-	ancount = ntohs(hp->ancount);
-	qdcount = ntohs(hp->qdcount);
-	bp = hostbuf;
-	buflen = sizeof hostbuf;
-	cp = answer->buf + HFIXEDSZ;
-	if (qdcount != 1) {
-		h_errno = NO_RECOVERY;
-		return (NULL);
-	}
-	n = dn_expand(answer->buf, eom, cp, bp, buflen);
-	if ((n < 0) || !(*name_ok)(bp)) {
-		h_errno = NO_RECOVERY;
-		return (NULL);
-	}
-	cp += n + QFIXEDSZ;
-	if (qtype == T_A || qtype == T_AAAA) {
-		/* res_send() has already verified that the query name is the
-		 * same as the one we sent; this just gets the expanded name
-		 * (i.e., with the succeeding search-domain tacked on).
-		 */
-		n = strlen(bp) + 1;		/* for the \0 */
-		if (n >= MAXHOSTNAMELEN) {
-			h_errno = NO_RECOVERY;
-			return (NULL);
-		}
-		host.h_name = bp;
-		bp += n;
-		buflen -= n;
-		/* The qname can be abbreviated, but h_name is now absolute. */
-		qname = host.h_name;
-	}
-	ap = host_aliases;
-	*ap = NULL;
-	host.h_aliases = host_aliases;
-	hap = h_addr_ptrs;
-	*hap = NULL;
-	host.h_addr_list = h_addr_ptrs;
-	haveanswer = 0;
-	had_error = 0;
-	_dns_ttl_ = -1;
-	while (ancount-- > 0 && cp < eom && !had_error) {
-		n = dn_expand(answer->buf, eom, cp, bp, buflen);
-		if ((n < 0) || !(*name_ok)(bp)) {
-			had_error++;
-			continue;
-		}
-		cp += n;			/* name */
-		type = _getshort(cp);
- 		cp += INT16SZ;			/* type */
-		class = _getshort(cp);
- 		cp += INT16SZ;			/* class */
-		if (qtype == T_A  && type == T_A)
-			_dns_ttl_ = _getlong(cp);
-		cp += INT32SZ;			/* TTL */
-		n = _getshort(cp);
-		cp += INT16SZ;			/* len */
-		if (class != C_IN) {
-			/* XXX - debug? syslog? */
-			cp += n;
-			continue;		/* XXX - had_error++ ? */
-		}
-		if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME) {
-			if (ap >= &host_aliases[MAXALIASES-1])
-				continue;
-			n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
-			if ((n < 0) || !(*name_ok)(tbuf)) {
-				had_error++;
-				continue;
-			}
-			cp += n;
-			/* Store alias. */
-			*ap++ = bp;
-			n = strlen(bp) + 1;	/* for the \0 */
-			if (n >= MAXHOSTNAMELEN) {
-				had_error++;
-				continue;
-			}
-			bp += n;
-			buflen -= n;
-			/* Get canonical name. */
-			n = strlen(tbuf) + 1;	/* for the \0 */
-			if (n > buflen || n >= MAXHOSTNAMELEN) {
-				had_error++;
-				continue;
-			}
-			strcpy(bp, tbuf);
-			host.h_name = bp;
-			bp += n;
-			buflen -= n;
-			continue;
-		}
-		if (qtype == T_PTR && type == T_CNAME) {
-			n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
-			if (n < 0 || !res_dnok(tbuf)) {
-				had_error++;
-				continue;
-			}
-			cp += n;
-			/* Get canonical name. */
-			n = strlen(tbuf) + 1;	/* for the \0 */
-			if (n > buflen || n >= MAXHOSTNAMELEN) {
-				had_error++;
-				continue;
-			}
-			strcpy(bp, tbuf);
-			tname = bp;
-			bp += n;
-			buflen -= n;
-			continue;
-		}
-		if (type != qtype) {
-			syslog(LOG_NOTICE|LOG_AUTH,
-	"gethostby*.gethostanswer: asked for \"%s %s %s\", got type \"%s\"",
-			       qname, p_class(C_IN), p_type(qtype),
-			       p_type(type));
-			cp += n;
-			continue;		/* XXX - had_error++ ? */
-		}
-		switch (type) {
-		case T_PTR:
-			if (strcasecmp(tname, bp) != 0) {
-				syslog(LOG_NOTICE|LOG_AUTH,
-				       AskedForGot, qname, bp);
-				cp += n;
-				continue;	/* XXX - had_error++ ? */
-			}
-			n = dn_expand(answer->buf, eom, cp, bp, buflen);
-			if ((n < 0) || !res_hnok(bp)) {
-				had_error++;
-				break;
-			}
-#if MULTI_PTRS_ARE_ALIASES
-			cp += n;
-			if (!haveanswer)
-				host.h_name = bp;
-			else if (ap < &host_aliases[MAXALIASES-1])
-				*ap++ = bp;
-			else
-				n = -1;
-			if (n != -1) {
-				n = strlen(bp) + 1;	/* for the \0 */
-				if (n >= MAXHOSTNAMELEN) {
-					had_error++;
-					break;
-				}
-				bp += n;
-				buflen -= n;
-			}
-			break;
-#else
-			host.h_name = bp;
-			if (_res.options & RES_USE_INET6) {
-				n = strlen(bp) + 1;	/* for the \0 */
-				if (n >= MAXHOSTNAMELEN) {
-					had_error++;
-					break;
-				}
-				bp += n;
-				buflen -= n;
-				_map_v4v6_hostent(&host, &bp, &buflen);
-			}
-			h_errno = NETDB_SUCCESS;
-			return (&host);
-#endif
-		case T_A:
-		case T_AAAA:
-			if (strcasecmp(host.h_name, bp) != 0) {
-				syslog(LOG_NOTICE|LOG_AUTH,
-				       AskedForGot, host.h_name, bp);
-				cp += n;
-				continue;	/* XXX - had_error++ ? */
-			}
-			if (n != host.h_length) {
-				cp += n;
-				continue;
-			}
-			if (!haveanswer) {
-				register int nn;
-
-				host.h_name = bp;
-				nn = strlen(bp) + 1;	/* for the \0 */
-				bp += nn;
-				buflen -= nn;
-			}
-
-			bp += sizeof(align) - ((u_long)bp % sizeof(align));
-
-			if (bp + n >= &hostbuf[sizeof hostbuf]) {
-				dprintf("size (%d) too big\n", n);
-				had_error++;
-				continue;
-			}
-			if (hap >= &h_addr_ptrs[MAXADDRS-1]) {
-				if (!toobig++)
-					dprintf("Too many addresses (%d)\n",
-						MAXADDRS);
-				cp += n;
-				continue;
-			}
-			bcopy(cp, *hap++ = bp, n);
-			bp += n;
-			buflen -= n;
-			cp += n;
-			break;
-		default:
-			dprintf("Impossible condition (type=%d)\n", type);
-			h_errno = NO_RECOVERY;
-			return (NULL);
-			/* BIND has abort() here, too risky on bad data */
-		}
-		if (!had_error)
-			haveanswer++;
-	}
-	if (haveanswer) {
-		*ap = NULL;
-		*hap = NULL;
-# if defined(RESOLVSORT)
-		/*
-		 * Note: we sort even if host can take only one address
-		 * in its return structures - should give it the "best"
-		 * address in that case, not some random one
-		 */
-		if (_res.nsort && haveanswer > 1 && qtype == T_A)
-			addrsort(h_addr_ptrs, haveanswer);
-# endif /*RESOLVSORT*/
-		if (!host.h_name) {
-			n = strlen(qname) + 1;	/* for the \0 */
-			if (n > buflen || n >= MAXHOSTNAMELEN)
-				goto no_recovery;
-			strcpy(bp, qname);
-			host.h_name = bp;
-			bp += n;
-			buflen -= n;
-		}
-		if (_res.options & RES_USE_INET6)
-			_map_v4v6_hostent(&host, &bp, &buflen);
-		h_errno = NETDB_SUCCESS;
-		return (&host);
-	}
- no_recovery:
-	h_errno = NO_RECOVERY;
-	return (NULL);
-}
-
-struct hostent *
-__dns_getanswer(answer, anslen, qname, qtype)
-	const char *answer;
-	int anslen;
-	const char *qname;
-	int qtype;
-{
-	switch(qtype) {
-	case T_AAAA:
-		host.h_addrtype = AF_INET6;
-		host.h_length = IN6ADDRSZ;
-		break;
-	case T_A:
-	default:
-		host.h_addrtype = AF_INET;
-		host.h_length = INADDRSZ;
-		break;
-	}
-
-	return(gethostanswer((const querybuf *)answer, anslen, qname, qtype));
-}
-
-struct hostent *
-_gethostbydnsname(name, af)
-	const char *name;
-	int af;
-{
-	querybuf buf;
-	register const char *cp;
-	char *bp;
-	int n, size, type, len;
-
-	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-		h_errno = NETDB_INTERNAL;
-		return (NULL);
-	}
-
-	switch (af) {
-	case AF_INET:
-		size = INADDRSZ;
-		type = T_A;
-		break;
-	case AF_INET6:
-		size = IN6ADDRSZ;
-		type = T_AAAA;
-		break;
-	default:
-		h_errno = NETDB_INTERNAL;
-		errno = EAFNOSUPPORT;
-		return (NULL);
-	}
-
-	host.h_addrtype = af;
-	host.h_length = size;
-
-	/*
-	 * if there aren't any dots, it could be a user-level alias.
-	 * this is also done in res_query() since we are not the only
-	 * function that looks up host names.
-	 */
-	if (!strchr(name, '.') && (cp = __hostalias(name)))
-		name = cp;
-
-	/*
-	 * disallow names consisting only of digits/dots, unless
-	 * they end in a dot.
-	 */
-	if (isdigit(name[0]))
-		for (cp = name;; ++cp) {
-			if (!*cp) {
-				if (*--cp == '.')
-					break;
-				/*
-				 * All-numeric, no dot at the end.
-				 * Fake up a hostent as if we'd actually
-				 * done a lookup.
-				 */
-				if (inet_pton(af, name, host_addr) <= 0) {
-					h_errno = HOST_NOT_FOUND;
-					return (NULL);
-				}
-				strncpy(hostbuf, name, MAXDNAME);
-				hostbuf[MAXDNAME] = '\0';
-				bp = hostbuf + MAXDNAME;
-				len = sizeof hostbuf - MAXDNAME;
-				host.h_name = hostbuf;
-				host.h_aliases = host_aliases;
-				host_aliases[0] = NULL;
-				h_addr_ptrs[0] = (char *)host_addr;
-				h_addr_ptrs[1] = NULL;
-				host.h_addr_list = h_addr_ptrs;
-				if (_res.options & RES_USE_INET6)
-					_map_v4v6_hostent(&host, &bp, &len);
-				h_errno = NETDB_SUCCESS;
-				return (&host);
-			}
-			if (!isdigit(*cp) && *cp != '.') 
-				break;
-		}
-	if ((isxdigit(name[0]) && strchr(name, ':') != NULL) ||
-	    name[0] == ':')
-		for (cp = name;; ++cp) {
-			if (!*cp) {
-				if (*--cp == '.')
-					break;
-				/*
-				 * All-IPv6-legal, no dot at the end.
-				 * Fake up a hostent as if we'd actually
-				 * done a lookup.
-				 */
-				if (inet_pton(af, name, host_addr) <= 0) {
-					h_errno = HOST_NOT_FOUND;
-					return (NULL);
-				}
-				strncpy(hostbuf, name, MAXDNAME);
-				hostbuf[MAXDNAME] = '\0';
-				bp = hostbuf + MAXDNAME;
-				len = sizeof hostbuf - MAXDNAME;
-				host.h_name = hostbuf;
-				host.h_aliases = host_aliases;
-				host_aliases[0] = NULL;
-				h_addr_ptrs[0] = (char *)host_addr;
-				h_addr_ptrs[1] = NULL;
-				host.h_addr_list = h_addr_ptrs;
-				h_errno = NETDB_SUCCESS;
-				return (&host);
-			}
-			if (!isxdigit(*cp) && *cp != ':' && *cp != '.') 
-				break;
-		}
-
-	if ((n = res_search(name, C_IN, type, buf.buf, sizeof(buf))) < 0) {
-		dprintf("res_search failed (%d)\n", n);
-		return (NULL);
-	}
-	return (gethostanswer(&buf, n, name, type));
-}
-
-struct hostent *
-_gethostbydnsaddr(addr, len, af)
-	const char *addr;	/* XXX should have been def'd as u_char! */
-	int len, af;
-{
-	const u_char *uaddr = (const u_char *)addr;
-	static const u_char mapped[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0xff,0xff };
-	static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 };
-	int n, size;
-	querybuf buf;
-	register struct hostent *hp;
-	char qbuf[MAXDNAME+1], *qp;
-#ifdef SUNSECURITY
-	register struct hostent *rhp;
-	char **haddr;
-	u_long old_options;
-	char hname2[MAXDNAME+1];
-#endif /*SUNSECURITY*/
-	
-	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-		h_errno = NETDB_INTERNAL;
-		return (NULL);
-	}
-	if (af == AF_INET6 && len == IN6ADDRSZ &&
-	    (!bcmp(uaddr, mapped, sizeof mapped) ||
-	     !bcmp(uaddr, tunnelled, sizeof tunnelled))) {
-		/* Unmap. */
-		addr += sizeof mapped;
-		uaddr += sizeof mapped;
-		af = AF_INET;
-		len = INADDRSZ;
-	}
-	switch (af) {
-	case AF_INET:
-		size = INADDRSZ;
-		break;
-	case AF_INET6:
-		size = IN6ADDRSZ;
-		break;
-	default:
-		errno = EAFNOSUPPORT;
-		h_errno = NETDB_INTERNAL;
-		return (NULL);
-	}
-	if (size != len) {
-		errno = EINVAL;
-		h_errno = NETDB_INTERNAL;
-		return (NULL);
-	}
-	switch (af) {
-	case AF_INET:
-		(void) sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
-			       (uaddr[3] & 0xff),
-			       (uaddr[2] & 0xff),
-			       (uaddr[1] & 0xff),
-			       (uaddr[0] & 0xff));
-		break;
-	case AF_INET6:
-		qp = qbuf;
-		for (n = IN6ADDRSZ - 1; n >= 0; n--) {
-			qp += SPRINTF((qp, "%x.%x.",
-				       uaddr[n] & 0xf,
-				       (uaddr[n] >> 4) & 0xf));
-		}
-		strcpy(qp, "ip6.int");
-		break;
-	default:
-		abort();
-	}
-	n = res_query(qbuf, C_IN, T_PTR, (u_char *)buf.buf, sizeof buf.buf);
-	if (n < 0) {
-		dprintf("res_query failed (%d)\n", n);
-		return (NULL);
-	}
-	if (!(hp = gethostanswer(&buf, n, qbuf, T_PTR)))
-		return (NULL);	/* h_errno was set by gethostanswer() */
-#ifdef SUNSECURITY
-	if (af == AF_INET) {
-	    /*
-	     * turn off search as the name should be absolute,
-	     * 'localhost' should be matched by defnames
-	     */
-	    strncpy(hname2, hp->h_name, MAXDNAME);
-	    hname2[MAXDNAME] = '\0';
-	    old_options = _res.options;
-	    _res.options &= ~RES_DNSRCH;
-	    _res.options |= RES_DEFNAMES;
-	    if (!(rhp = gethostbyname(hname2))) {
-		syslog(LOG_NOTICE|LOG_AUTH,
-		       "gethostbyaddr: No A record for %s (verifying [%s])",
-		       hname2, inet_ntoa(*((struct in_addr *)addr)));
-		_res.options = old_options;
-		h_errno = HOST_NOT_FOUND;
-		return (NULL);
-	    }
-	    _res.options = old_options;
-	    for (haddr = rhp->h_addr_list; *haddr; haddr++)
-		if (!memcmp(*haddr, addr, INADDRSZ))
-			break;
-	    if (!*haddr) {
-		syslog(LOG_NOTICE|LOG_AUTH,
-		       "gethostbyaddr: A record of %s != PTR record [%s]",
-		       hname2, inet_ntoa(*((struct in_addr *)addr)));
-		h_errno = HOST_NOT_FOUND;
-		return (NULL);
-	    }
-	}
-#endif /*SUNSECURITY*/
-	hp->h_addrtype = af;
-	hp->h_length = len;
-	bcopy(addr, host_addr, len);
-	h_addr_ptrs[0] = (char *)host_addr;
-	h_addr_ptrs[1] = NULL;
-	if (af == AF_INET && (_res.options & RES_USE_INET6)) {
-		_map_v4v6_address((char*)host_addr, (char*)host_addr);
-		hp->h_addrtype = AF_INET6;
-		hp->h_length = IN6ADDRSZ;
-	}
-	h_errno = NETDB_SUCCESS;
-	return (hp);
-}
-
-#ifdef RESOLVSORT
-static void
-addrsort(ap, num)
-	char **ap;
-	int num;
-{
-	int i, j;
-	char **p;
-	short aval[MAXADDRS];
-	int needsort = 0;
-
-	p = ap;
-	for (i = 0; i < num; i++, p++) {
-	    for (j = 0 ; (unsigned)j < _res.nsort; j++)
-		if (_res.sort_list[j].addr.s_addr == 
-		    (((struct in_addr *)(*p))->s_addr & _res.sort_list[j].mask))
-			break;
-	    aval[i] = j;
-	    if (needsort == 0 && i > 0 && j < aval[i-1])
-		needsort = i;
-	}
-	if (!needsort)
-	    return;
-
-	while (needsort < num) {
-	    for (j = needsort - 1; j >= 0; j--) {
-		if (aval[j] > aval[j+1]) {
-		    char *hp;
-
-		    i = aval[j];
-		    aval[j] = aval[j+1];
-		    aval[j+1] = i;
-
-		    hp = ap[j];
-		    ap[j] = ap[j+1];
-		    ap[j+1] = hp;
-
-		} else
-		    break;
-	    }
-	    needsort++;
-	}
-}
-#endif
-void
-_sethostdnsent(stayopen)
-	int stayopen;
-{
-	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
-		return;
-	if (stayopen)
-		_res.options |= RES_STAYOPEN | RES_USEVC;
-}
-
-void
-_endhostdnsent()
-{
-	_res.options &= ~(RES_STAYOPEN | RES_USEVC);
-	res_close();
-}