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[unix-history] / lib / librpc / rpc / pmap_getport.c
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1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California 94043
28 */
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29
30#if defined(LIBC_SCCS) && !defined(lint)
31/*static char *sccsid = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";*/
32/*static char *sccsid = "from: @(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC";*/
33static char *rcsid = "$Id: pmap_getport.c,v 1.3 1993/08/26 00:53:28 jtc Exp $";
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34#endif
35
36/*
37 * pmap_getport.c
38 * Client interface to pmap rpc service.
39 *
40 * Copyright (C) 1984, Sun Microsystems, Inc.
41 */
42
43#include <rpc/rpc.h>
44#include <rpc/pmap_prot.h>
45#include <rpc/pmap_clnt.h>
46#include <sys/socket.h>
47#include <net/if.h>
48
49static struct timeval timeout = { 5, 0 };
50static struct timeval tottimeout = { 60, 0 };
51
52/*
53 * Find the mapped port for program,version.
54 * Calls the pmap service remotely to do the lookup.
55 * Returns 0 if no map exists.
56 */
57u_short
58pmap_getport(address, program, version, protocol)
59 struct sockaddr_in *address;
60 u_long program;
61 u_long version;
62 u_int protocol;
63{
64 u_short port = 0;
65 int socket = -1;
66 register CLIENT *client;
67 struct pmap parms;
68
69 address->sin_port = htons(PMAPPORT);
70 client = clntudp_bufcreate(address, PMAPPROG,
71 PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
72 if (client != (CLIENT *)NULL) {
73 parms.pm_prog = program;
74 parms.pm_vers = version;
75 parms.pm_prot = protocol;
76 parms.pm_port = 0; /* not needed or used */
77 if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
78 xdr_u_short, &port, tottimeout) != RPC_SUCCESS){
79 rpc_createerr.cf_stat = RPC_PMAPFAILURE;
80 clnt_geterr(client, &rpc_createerr.cf_error);
81 } else if (port == 0) {
82 rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
83 }
84 CLNT_DESTROY(client);
85 }
86 (void)close(socket);
87 address->sin_port = 0;
88 return (port);
89}