getrpcport.c revision 261046 
1/*	$NetBSD: getrpcport.c,v 1.16 2000/01/22 22:19:18 mycroft Exp $	*/
2
3/*-
4 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 *   this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 *   this list of conditions and the following disclaimer in the documentation
13 *   and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 *   contributors may be used to endorse or promote products derived
16 *   from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#if defined(LIBC_SCCS) && !defined(lint)
32static char *sccsid2 = "@(#)getrpcport.c 1.3 87/08/11 SMI";
33static char *sccsid = "@(#)getrpcport.c	2.1 88/07/29 4.0 RPCSRC";
34#endif
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD: stable/10/lib/libc/rpc/getrpcport.c 261046 2014-01-22 23:45:27Z mav $");
37
38/*
39 * Copyright (c) 1985 by Sun Microsystems, Inc.
40 */
41
42#include "namespace.h"
43#include <sys/types.h>
44#include <sys/socket.h>
45
46#include <assert.h>
47#include <netdb.h>
48#include <stdio.h>
49#include <string.h>
50
51#include <rpc/rpc.h>
52#include <rpc/pmap_clnt.h>
53#include "un-namespace.h"
54
55int
56getrpcport(host, prognum, versnum, proto)
57	char *host;
58	int prognum, versnum, proto;
59{
60	struct sockaddr_in addr;
61	struct hostent *hp;
62
63	assert(host != NULL);
64
65	if ((hp = gethostbyname(host)) == 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 > addr.sin_len)
72		hp->h_length = addr.sin_len;
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