1 /* $NetBSD: getrpcport.c,v 1.18 2013/03/11 20:19:29 tron Exp $ */
2
3 /*
4 * Copyright (c) 2010, Oracle America, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met:
9 *
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following
14 * disclaimer in the documentation and/or other materials
15 * provided with the distribution.
16 * * Neither the name of the "Oracle America, 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
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 #if defined(LIBC_SCCS) && !defined(lint)
36 #if 0
37 static char *sccsid = "@(#)getrpcport.c 1.3 87/08/11 SMI";
38 static char *sccsid = "@(#)getrpcport.c 2.1 88/07/29 4.0 RPCSRC";
39 #else
40 __RCSID("$NetBSD: getrpcport.c,v 1.18 2013/03/11 20:19:29 tron Exp $");
41 #endif
42 #endif
43
44 /*
45 * Copyright (c) 1985 by Sun Microsystems, Inc.
46 */
47
48 #include "namespace.h"
49
50 #include <sys/types.h>
51 #include <sys/socket.h>
52
53 #include <assert.h>
54 #include <netdb.h>
55 #include <stdio.h>
56 #include <string.h>
57
58 #include <rpc/rpc.h>
59 #include <rpc/pmap_clnt.h>
60
61 #ifdef __weak_alias
__weak_alias(getrpcport,_getrpcport)62 __weak_alias(getrpcport,_getrpcport)
63 #endif
64
65 int
66 getrpcport(char *host, int prognum, int versnum, int proto)
67 {
68 struct sockaddr_in addr;
69 struct hostent *hp;
70
71 _DIAGASSERT(host != NULL);
72
73 if ((hp = gethostbyname(host)) == NULL)
74 return (0);
75 memset(&addr, 0, sizeof(addr));
76 addr.sin_len = sizeof(struct sockaddr_in);
77 addr.sin_family = AF_INET;
78 addr.sin_port = 0;
79 if (hp->h_length > addr.sin_len)
80 hp->h_length = addr.sin_len;
81 memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length);
82 /* Inconsistent interfaces need casts! :-( */
83 return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum,
84 (u_int)proto));
85 }
86