1/*	$NetBSD: getrpcport.c,v 1.16 2000/01/22 22:19:18 mycroft Exp $	*/
2
3/*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2009, Sun Microsystems, Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 * - Redistributions of source code must retain the above copyright notice,
12 *   this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright notice,
14 *   this list of conditions and the following disclaimer in the documentation
15 *   and/or other materials provided with the distribution.
16 * - Neither the name of Sun Microsystems, Inc. nor the names of its
17 *   contributors may be used to endorse or promote products derived
18 *   from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34static char *sccsid2 = "@(#)getrpcport.c 1.3 87/08/11 SMI";
35static char *sccsid = "@(#)getrpcport.c	2.1 88/07/29 4.0 RPCSRC";
36#endif
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD$");
39
40/*
41 * Copyright (c) 1985 by Sun Microsystems, Inc.
42 */
43
44#include "namespace.h"
45#include <sys/types.h>
46#include <sys/socket.h>
47
48#include <assert.h>
49#include <netdb.h>
50#include <stdio.h>
51#include <string.h>
52
53#include <rpc/rpc.h>
54#include <rpc/pmap_clnt.h>
55#include "un-namespace.h"
56
57int
58getrpcport(char *host, int prognum, int versnum, int proto)
59{
60	struct sockaddr_in addr;
61	struct hostent *hp;
62
63	assert(host != NULL);
64
65	if ((hp = gethostbyname2(host, AF_INET)) == NULL)
66		return (0);
67	memset(&addr, 0, sizeof(addr));
68	addr.sin_len = sizeof(struct sockaddr_in);
69	addr.sin_family = AF_INET;
70	addr.sin_port =  0;
71	if (hp->h_length > sizeof(addr.sin_addr.s_addr))
72		hp->h_length = sizeof(addr.sin_addr.s_addr);
73	memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length);
74	/* Inconsistent interfaces need casts! :-( */
75	return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum,
76	    (u_int)proto));
77}
78