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