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 /*
34 * Copyright (c) 1985 by Sun Microsystems, Inc.
35 */
36
37 #include "namespace.h"
38 #include <sys/types.h>
39 #include <sys/socket.h>
40
41 #include <assert.h>
42 #include <netdb.h>
43 #include <stdio.h>
44 #include <string.h>
45
46 #include <rpc/rpc.h>
47 #include <rpc/pmap_clnt.h>
48 #include "un-namespace.h"
49
50 int
getrpcport(char * host,int prognum,int versnum,int proto)51 getrpcport(char *host, int prognum, int versnum, int proto)
52 {
53 struct sockaddr_in addr;
54 struct hostent *hp;
55
56 assert(host != NULL);
57
58 if ((hp = gethostbyname2(host, AF_INET)) == NULL)
59 return (0);
60 memset(&addr, 0, sizeof(addr));
61 addr.sin_len = sizeof(struct sockaddr_in);
62 addr.sin_family = AF_INET;
63 addr.sin_port = 0;
64 if (hp->h_length > sizeof(addr.sin_addr.s_addr))
65 hp->h_length = sizeof(addr.sin_addr.s_addr);
66 memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length);
67 /* Inconsistent interfaces need casts! :-( */
68 return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum,
69 (u_int)proto));
70 }
71