1/*	$NetBSD: pmap_getport.c,v 1.16 2000/07/06 03:10:34 christos Exp $	*/
2
3/*
4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
5 * unrestricted use provided that this legend is included on all tape
6 * media and as a part of the software program in whole or part.  Users
7 * may copy or modify Sun RPC without charge, but are not authorized
8 * to license or distribute it to anyone else except as part of a product or
9 * program developed by the user.
10 *
11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 *
15 * Sun RPC is provided with no support and without any obligation on the
16 * part of Sun Microsystems, Inc. to assist in its use, correction,
17 * modification or enhancement.
18 *
19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
21 * OR ANY PART THEREOF.
22 *
23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
24 * or profits or other special, indirect and consequential damages, even if
25 * Sun has been advised of the possibility of such damages.
26 *
27 * Sun Microsystems, Inc.
28 * 2550 Garcia Avenue
29 * Mountain View, California  94043
30 */
31
32#if defined(LIBC_SCCS) && !defined(lint)
33static char *sccsid2 = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";
34static char *sccsid = "from: @(#)pmap_getport.c	2.2 88/08/01 4.0 RPCSRC";
35#endif
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD$");
38
39/*
40 * pmap_getport.c
41 * Client interface to pmap rpc service.
42 *
43 * Copyright (C) 1984, Sun Microsystems, Inc.
44 */
45
46#include "namespace.h"
47#include <sys/types.h>
48#include <sys/socket.h>
49
50#include <arpa/inet.h>
51#include <net/if.h>
52
53#include <assert.h>
54#include <unistd.h>
55
56#include <rpc/rpc.h>
57#include <rpc/pmap_prot.h>
58#include <rpc/pmap_clnt.h>
59#include "un-namespace.h"
60
61static const struct timeval timeout = { 5, 0 };
62static const struct timeval tottimeout = { 60, 0 };
63
64/*
65 * Find the mapped port for program,version.
66 * Calls the pmap service remotely to do the lookup.
67 * Returns 0 if no map exists.
68 */
69u_short
70pmap_getport(address, program, version, protocol)
71	struct sockaddr_in *address;
72	u_long program;
73	u_long version;
74	u_int protocol;
75{
76	u_short port = 0;
77	int sock = -1;
78	CLIENT *client;
79	struct pmap parms;
80
81	assert(address != NULL);
82
83	address->sin_port = htons(PMAPPORT);
84	client = clntudp_bufcreate(address, PMAPPROG,
85	    PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
86	if (client != NULL) {
87		parms.pm_prog = program;
88		parms.pm_vers = version;
89		parms.pm_prot = protocol;
90		parms.pm_port = 0;  /* not needed or used */
91		if (CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT,
92		    (xdrproc_t)xdr_pmap,
93		    &parms, (xdrproc_t)xdr_u_short, &port, tottimeout) !=
94		    RPC_SUCCESS){
95			rpc_createerr.cf_stat = RPC_PMAPFAILURE;
96			clnt_geterr(client, &rpc_createerr.cf_error);
97		} else if (port == 0) {
98			rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
99		}
100		CLNT_DESTROY(client);
101	}
102	address->sin_port = 0;
103	return (port);
104}
105