4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*-
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1985, 1988, 1993
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * The Regents of the University of California. All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Portions copyright (c) 1999, 2000
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Intel Corporation.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * are met:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. All advertising materials mentioning features or use of this software
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * must display the following acknowledgement:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * This product includes software developed by the University of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * California, Berkeley, Intel Corporation, and its contributors.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 4. Neither the name of University, Intel Corporation, or their respective
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * contributors may be used to endorse or promote products derived from
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * this software without specific prior written permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE REGENTS, INTEL CORPORATION AND
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * INTEL CORPORATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Portions Copyright (c) 1993 by Digital Equipment Corporation.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Permission to use, copy, modify, and distribute this software for any
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * purpose with or without fee is hereby granted, provided that the above
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * copyright notice and this permission notice appear in all copies, and that
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * the name of Digital Equipment Corporation not be used in advertising or
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * publicity pertaining to distribution of the document or software without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * specific, written prior permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * SOFTWARE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * -
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * --Copyright--
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(LIBC_SCCS) && !defined(lint)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93";
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic char rcsid[] = "$Id: gethostbyht.c,v 1.1.1.1 2003/11/19 01:51:27 kyu3 Exp $";
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* LIBC_SCCS and not lint */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/param.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/socket.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <netinet/in.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <arpa/inet.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <netdb.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <stdio.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <ctype.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <errno.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <string.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <arpa/nameser.h> /* XXX */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <resolv.h> /* XXX */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include "Socklib_internals.h"
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define MAXALIASES 35
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic struct hostent host;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic char *host_aliases[MAXALIASES];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic char hostbuf[BUFSIZ+1];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic FILE *hostf = NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic u_char host_addr[16]; /* IPv4 or IPv6 */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic char *h_addr_ptrs[2];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstatic int stayopen = 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncvoid
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync_sethosthtent(int f)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (!hostf)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync hostf = fopen(_PATH_HOSTS, "r" );
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync else
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync rewind(hostf);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync stayopen = f;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncvoid
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync_endhosthtent()
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (hostf && !stayopen) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (void) fclose(hostf);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync hostf = NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstruct hostent *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncgethostent()
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync char *p;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync register char *cp, **q;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync int af, len;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (!hostf && ( NULL == (hostf = fopen(_PATH_HOSTS, "r" )))) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync h_errno = NETDB_INTERNAL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync again:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ( NULL == (p = fgets(hostbuf, sizeof hostbuf, hostf))) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync h_errno = HOST_NOT_FOUND;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (*p == '#')
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync goto again;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ( NULL == (cp = strpbrk(p, "#\n")))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync goto again;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *cp = '\0';
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ( NULL == (cp = strpbrk(p, " \t")))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync goto again;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *cp++ = '\0';
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (inet_pton(AF_INET6, p, host_addr) > 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync af = AF_INET6;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync len = IN6ADDRSZ;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } else if (inet_pton(AF_INET, p, host_addr) > 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (_res.options & RES_USE_INET6) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _map_v4v6_address((char*)host_addr, (char*)host_addr);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync af = AF_INET6;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync len = IN6ADDRSZ;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } else {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync af = AF_INET;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync len = INADDRSZ;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } else {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync goto again;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync h_addr_ptrs[0] = (char *)host_addr;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync h_addr_ptrs[1] = NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync host.h_addr_list = h_addr_ptrs;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync host.h_length = len;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync host.h_addrtype = af;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync while (*cp == ' ' || *cp == '\t')
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync cp++;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync host.h_name = cp;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync q = host.h_aliases = host_aliases;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((cp = strpbrk(cp, " \t\r")) != NULL)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *cp++ = '\0';
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync while (cp && *cp) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (*cp == ' ' || *cp == '\t') {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync cp++;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync continue;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (q < &host_aliases[MAXALIASES - 1])
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *q++ = cp;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((cp = strpbrk(cp, " \t\r")) != NULL)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *cp++ = '\0';
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *q = NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync h_errno = NETDB_SUCCESS;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (&host);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstruct hostent *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync_gethostbyhtname(const char *name, int af)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync register struct hostent *p;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync register char **cp;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync sethostent(0);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync while ((p = gethostent()) != NULL) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (p->h_addrtype != af)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync continue;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (strcasecmp(p->h_name, name) == 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync break;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (cp = p->h_aliases; *cp != 0; cp++)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (strcasecmp(*cp, name) == 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync goto found;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncfound:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync endhostent();
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (p);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstruct hostent *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync_gethostbyhtaddr(const char *addr, int len, int af)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync register struct hostent *p;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync sethostent(0);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync while ((p = gethostent()) != NULL)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (p->h_addrtype == af && !bcmp(p->h_addr, addr, len))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync break;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync endhostent();
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (p);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}